SCIENTIFIC ABSTRACT PRIKHODTSEVA, V.P. - PRIKHOTKO, A.F.

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SCIENTIFIC ABSTRACT
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24(5),24(7) AUTHORS: Dzhelepov, B. S., Prikhodtseva, V. P., SOV/48-23-7-7/31 Khollnov, Yu. V. TITLE: The y-Emission of Cs134 (1-izluoheniye C0134) PERIODICAL: Izvestiya Akademii nauk SSSR. Seriya fizicheskaya, 1959, Vol 23, Nr 7, pp 826-827 (USSR) ABSTRACT: The object of the measurements carried out by a magnetic spectrometer was the determination of the relative 14tensity of the y-lines. The measurement results are shown in two dia- grams, the half-width of the lines in the range of 1 Mev is indicated with 3.3 %, and the intensities of the lines are compared. The half-width of the lipos could be reduced by a better focusing to 1.6 %. The resuits o'f1iiis investigation, the energy andihe relative intensity of the y-lines of Cs134 are finally compiled. The authors thank V. A. Yeliseyev and A. Ushakovalbr the execution of the measurements, and N. N. Zhukovskiy for making possible the measurements by the elotron. There are I figure, 1 table, and 11 references, 4 of which are Soviet. Card 1/2 The y-Emission of Cs134 SOV/48-23-7-7/31 ASSOCIATION: Radiyevyy itatitut imeni V. 0. Xhlopina Akademii nauk 83SR (Radium Institute imeni V. G. Khlopin of the Academy of Sciences, USSR) Card 2/2 ,Won g GrLg= -yw. To. P.. Dshgl.po,. 3. S.. Z.Iotev,jo. A. V., liable, T. To., Prikhodlwvx, V. P.. thol-nov. To. V., shchaki., G. To. IMSt Radiation ?"a AsT4 (Islu.h.nire A.74) MlaDIcALg Is ... %tya A"4..ii -k 555R, 5.riy. ftsichoskaye, 1956. Tol. 22. Ir T, pp. 831-8 3a (USSR) ABSTRACT: In December 1957 t4 authors obtained a radlochealcaIly pura P"Watim Or As ~-4 C.) with a t.04 specific Th. characteristic features of this docay were examined and prolls*ly do trot the prod"tion of the rrvparstto~ ' ta h d I "a produced 707 a bombsrdwaat of car- ;7 blu A is doo.ribed T vantum with deuterons wit4 " vc.Egr of 10,8 N.V. --- re.ult. of the investigation of A - and 0 -a; !ctra are sz7%ia*4. It 1 4 1. of an 2 -%Irq. is Proved that the ground state of &. After the C.,C -,', ~' Qtra nad been xubt,racted the -bypss.- .- ' 0 b:th spectra ~ovod a Curie diagrasim far thC"n"t0 ;f , so iac* to be rac tilt In the ck-ground ah . at. K- and (L-U) . ver.ion-lines of the i-ren Pitions of 596 and : Cart 1/4 635 bet -w clearly worked. Th, X-635 Lin. is. wittaut doubt, treAdItim- 2* of the 0". with Ihs _6 k.v Munitions which 1,7 cOfto acted with too positron brwach. cor- d Ilion* Oro nor- cOmplic.t.d, as the Froportion of in% K_csp_ ' at be known In order to be able to d.l.raiz. 'I; Iso ' 'he d t i T . .rm he a rum n.jjon :fim,.~. given. of Sh~; rodlalloa of #8 we stl at.d b sense of th g y o el recall *Otr0n#. Tha rl='. intensity of Shro. "a Iti led with.quipa.nt' Of . better rv..tut-oa: Theh11. ILA., hO - 566- old the 635 key its.. with the,of Ma 4Q-APMoaftt of a lower resolution. but of a I=ImOQ- Intensity seeplIfied by Szo hundredfoll , it v~x mAten t"d to find harder V-Iin.o in the radiallo. of 42 : The d cay energy In the transautation from As.- Z. T 4 gives rt Ito the as suap%ioa that %he levels of I- cited 09 to those of 2500 k.T. AotmutIly in the -Pwalx~l race. of 1200 MV a pron~ncod ..pszol"atma of the couz%xing mt. above the q.iot background Ouno~t*d with %be softer Ila.. me observol. Th. intensity of this lima to smaller *y a fact dr, of flO than that or %be to sh.- t thetin Go he second 1".X or zol"llon probabIX be& an energy of 1200 k.T. If Shim 1. true. is should be Cart 2/4 that a transition from ths, second level to the fL,,% Lmo ~f !.410lon Frow Am74 SOY/48-22-7.1%/26 .bout 600 W estate and that this level form. - dou*'.t tth th n 596 keY Lin*. Th*.r"1fltmtI:a1A two decay schme at As 4 mre~ investigated In the Istch.;t.r am* remarks -.- coming theti Ividual levols am given. &A regarAl t~. 4o. wwgl.m of h:4 transition at As - 5960 key of Go? I% to shown that Ln this transition the ratta to qt - a to the Leve tlgattoni of the ratjo K/A im, the A-3161o," to jh~ level at 5~6#3 key of CA 4 is to shown that -no ratlo Jr/O for this transitio 'us 1:' " " a*-'; :I .% 12W. key :.f,r_,4 j: ptobably a ..... .Met . I., yjth the ~s,- or'1 2. Th. do-;nd :..it:42j-:-I of 31. Y"b.%Iy ceiar 1300 k.1 and Is .th '" . s. x .r..y.., 1. p. 3.11nov, Va. To. To. N. xb.,,a, wed Wheir Imems lollaborated In the work. 7h*" are 5 fir-, 5 tables. end 15 refer .... a. 5 of which are Soviet. card 5/4 21(7) SOV/48-23-2-7/2o AUTHORS: Dzhelepov, B. S., Prikhodtseva, V. P., Khollnov,.Yu. V. TITLE: y-Spectrum of J131 (y-Spektr J 131) PERXODICAL: Izvestiya Akademii nauk SSSR. Seriya fizicheskaya, 1959, Vol 23, Hr-2, p 206 (ussr-,) ABSTRACT: The authors investigated the y-spectrum of J131 within the range of 200-800 kev, determined the intensities of well known y-lines and the y-line with 514 kev, of which mention is made in paper (Ref 2). The results of these investigations are con- tained in a figure. For the intensities of y-lines the follow- ing values were obtained: E kev; 278 362 514 633-5 722 I % 5-7 100 < 0-4 8.9 1.9 In addition, a special investigation has shown that the intensi- ty of the y-line with 514 kev never exceeds 0.4% of the intensi- ty of the I-line with 362 kev. The atf-thors thank V. A. Yeliseyev for help in the measurements. There are 11 fiVres and 2 references, 1 of which is Soviet. Card 1/2 y-Spectrum of J131 SOV/48-23-2-7/2o ASSOCIATION: Radiyevyy institut im. V. G. Khlopina. Akademii nauk SSSR (Radium Institute imeni V. G. Khlopin of the Academy of Sciences, USSR) Card 2/2 21M SOV/48-23-2-8/20 AUTHORS: Dzhelepov, B. S., Yeliseyev, V. A., Prikhodtseva, V. F., Khollnov, Yu. V. TITLE: y-Radiation of Br 82 (y-Izlucheniye Br 82 PERIODICAL; Izvestiya Akademii nauk SSSR. Seriya fizicheakaya, 1959, Vol 23, Nr 2, pp 207-210 (USSR) ABSTRACT: The 7-spectrum was stu"d by means of the "Rytron" spectrometer. It is given in figure 1. 10 lines were detected. The energies and relative intensities obtained in this and another paper are listed in a table for comparison. The best accordance re- sulted from reference 8, bothfor energies and intensities. Within the range 1700-2000kev aweskline at 1780 kev and only one elevation of a point above the background at 1910 kev were found. Within the range 2000-2700 kev no lines with an intensity above 0.2% were fouUd. The conversion coefficient of the main transitions in Br t$Z was determined by means of the intensities obtained. The initial value of a for the transi- 82 K tion type E2 of trannition 777 kev in JKr was adopted from tables published by Sliv and Band Ref 13) with an amount of 8.22.lo-4. A decay scheme of Br8 b Kr82 is given in Card 1/2 figure 2. The transition types of the individual transitions y-Radiation of Br 82 SOV48-23-2-8/2o of Kr 82 were determined according to a comparison of the theoretical 0k values with,the experimental ones (Table 2). The lines 1648 and 1780 kev detected for the first time as levels are not given in the decay scheme. There are 2 figures, 2 tables, and 13 references, 3 of which are Soviet. ASSOCIATION: Radiyevyy institut im. V. G. Xhlopina Akademii nauk SSSR (Radium Institute imeni V. G. Khlopin of the Academy of Sciences, USSR) Card 2/2 GRIGORIYEV, Ye.P.; DZRELEPOV, B.S.; ZOLOTAVIN, A.V.; MISHIN, V.Ya.; -PRIKMDTSEVA, V.P.; KHOL1110Y, Yu.V.; SHCHUXIN, G.Ye. ................................................ :_ Study of As74. Izv. All S.S.S.R. Ser. fiz. 22 no-7:831-838 JI 158- (MIRA 11:9) (Arsenic--Decay) 11 f , 21 ~7) QV/ ro- 121 - '-!1 /4 AUTHORS: DzheleDov, 33. S. , Corresponding Member, Acade.--y of Scie- USSR, Prikhodtaeva$ V.._P., Khollnov, Yu. V. 140 (0+ + 0+-perekhod v C014o) TITLE; The 0+ + 0 -Transition in Ce PERIODICAL: Dolclady A),.-atlomii ninik SOSR, 19511, Vol 121, Nr pp 9 9 5- 9 ') 7 (USSR) ABSTRACT: By some authors the following problem was raised: Do the conversion electrons X-1909 (- 1909 keV) correspond to the transition betweer~ the excited state (1909 keV, quantum characteristics 0 ) and the ground state (also 0 ) ? In order to solve this proble T~' the authors carefully investi- gated the y-spectrum. of La in the energy region of -1900 keV. Lanthanum oxide irradiated by thermal neutrons was used as a source. The original activity of the preparation was 2,6 Cu. The results of' the measurements are given in a diagram. No 7-line is observed in the energy region 1H0-2000 keV. The intenaity of the- ~_rays -1900 keV (if t'hey exist at all) is less than 4.10 quanta per disintegration. These Card 1/3 data (together with the data of two previous papers (Refs 1, 2) The 0 + 4 0 +-Transition in Ce140 SOV/2o-121-6--ii/45 concerning the intensity of the con~version 1* 1r,09 kev" ~ne , j anable us to conclude that there is a 0 *r + 0,r -tran-ai 4" ion. In order to confirm the eXi3tence of the line K-1909, arid for a more accurate determination of ita in~enaity, the authors investigated the h~~d part of the spectrum of the conversion electrons of La 0 by means of 2 sliectrometers of the ketron type. These spectrometers were placed at the authors' disposal by A. A. Bashilov, Leningradskiy univer- sitet(Leningrad University) and K. Ya. Gromov ' 0iyevfy institut AH SSSR (Radium Institute AS USSR). La"d was tined as a source in both of these cases. Accordine to tiie results given in a diaerara, the existence of the lines K- and L--.I',)09 is beyond any doubt. The transition has the average ener~ry 1902 keV, arid the ratio of the intensities K 1902 /K 1596 ~_2 equal to 0,220,(i.e. the averaCe value of all the v.,eaaux,.ien% series). Por the lower limit of the conversion coefficient of the transition 1902 keV the value 'K-1902 ~' 0)38 was found. This leads to the conclusion that the transition wizh the ejerf n " 140 is the hither'.o unknown trani_iDion ,7,,1902 keV i Ce 0 - 0 . Besides, the authors sought antl found t1he K- and Card 2112, L-conversion lines which correspond to the 7-lineo 2.-1"43 ~Jrd The 0+ -* 0+_ Transition in Ce 140 SOV/'2o-121-6-11/145 2390 keV and to the y-line 2515 keV. A table --_-',ves the ex- perimental and the theoretical conversion coeificients on the X-shell for the transitions discussed in this paper. The authors thank A. A. Bashilov and K. Ya. Gromov (who made it possible to carry out the control experiments by means of their spectrometers), 11. 'D. !Tovosilltseva for the chemi- cal separation of La140 from a barium solution, and also A. G. Dmitriyev and Yu. A. Gurlyan for their help in carrying out measurements. There are 3 figures, I table,and 6 references, 5 of which are Soviet. ASSOCIATION: Radiyevyy institut im. V. G. Khlopina Akademii nauk SSSR (Radium Institute imeni V. G. Khlopin)AS USSR) SUBMITTED: June 30, 1958 Card 3/3 Y11. V.1 o~ 0 4- Transition in CeL4.0.1. 'iuclear Physics, vol. nP." '49 (."4'0. Pollani P,,ful. Co., --"---.sterJan) Radilmn Inst, i,,Yi V.G. Flilopin, Acad. "'Ici. U33R, Leningrad. A search has been made for garuna-gitanta of enerEy.--IO(DO kel in t'Le spectriurt of La'" by ne--n3 of a rarima-spec trome ter by analysis of recoil electrons. it is shown that is such exist, their intensity is < 0.1~y 10--3 (Tuantum per dis.-LnteEra~ion. It is simultaneously confirmed that the spectrum of conversion electrons contains intense conversion lines correapondi-ing, to a transition energy of 1902 keV. The lower limit of the conversion coefficient of this transition proved equal to 0.38. Such a large valne olF* t~,is li~7-it indicated that it is either a transition of high multipole order (7- 7 l0),or.aOr--'-P- O~transition in vkdich gamma quanta of the ,iven energy are entirel~v absent. The first assiL-Ttion may bo discar,lcd S4nce in this case the lifetime of the 1900 keV state shoiild be very great ( :;;,101" years), """'ereas the intensity of the corresponding conversion line falls off Aith a ~Iajf I ife of 5.-M~ 140 ho-ars. ',-Ie are thus dealinr here idtli a new G+ -" 0-- transition. The paper also disrlisses, Ithe characteristics of soveral. othpr transitions io Ce 'PRIKEODIKO), V.S., kand.med.nauk Clinical and biochemical changes in chronic tonsillitis in children. Sov.med. 25 no.5:99-104 W 162. (MIRA 15:8) 1. Iz kafedry detskikh boleznvy lechebnogo i sanitarno-gigiyeni- cheskogo fakulltetov (zav. - prof. G.I.Tets) Kharlkovskpgo meditsinskogo instituta (dir. - dotsent B.A.Zadorozbnyy) na baze detskoy dorozhnoy bollnitys (nachallnik A.G.Kovalenko). (TONSILS-DISEASES) 18-7400 65695 SOV/136-j9-10-12/18 AUTHORS: Karasevich, V.I. and Prikhod'ko, V.Ye. TITLE: New Developments in the Production of Aluminized Iron PERIODICAL: Tsvetnyye metally, 1959, Nr 10, pp 68-75 (USSR) ABSTRACT: A method of producing Al-Fe-Al bimetal sheet, suitable for the manufacture of kitchen utensils, was developed by the staff of VAMI about 25 years ago (Ref 1 to 4). Following the development of other, easier to produce, bimetal materials and owing to the continued increase in the output of alum�nium sheett the Al-Fe-Al bimetal found little application. Interest in this material has been revived recently in connection with the possibility of using it as a substitute for nickel in the manufacture of some components of electron tubes used in the wireless industry. At temperatures above 6000C, the surface of the anode made of aluminized iron, darkens as a result of the formation of the intermetallic compound FeA13; this makes it possible to eliminate the cumbersome operation of blackening (carbonizing) the bright nickel surface, which at present has to be carried out at all the plants Card 1/10 manufacturing electron tubes. By replacing nickel with 65695 sov/136-59-IC-12/18 New Developments in the Production of Aluminized Iron aluminized steel, a large quantity of nickel strip would become available-for other applications, the performance of the electron tubes would be improved and their manufacture simplified. It was for this reason that work on the production of aluminized steel by the method developed by the Giprtsvetmetobrabotka lnstitute, was resumed about ten ),ears ago. Armco- A iron (< O.u25'/Q' C) sheet, 6 mm thick, was used as the starting material, with aluminium AO (GOST 3549-57), 0.5 min thick, used for cladding. The process employed was quite complex, required a large proportion of manual labour and comprised the following operations: cutting the iron sheet into.strips 120 mm wide; normalizing the strips at 850 to 900 C; pickling in a solution containing 10% H2SO4 and 3% HN03; cleaning the strip with steel wire brushing; rolling the strip to 5 mm; degreasing it with aviation benzene; cleaning the iron strips (5 x 120 mm) and aluminium strips (0-5 X 130 mm) with steel wire brushes; cladding both sides of the iron strip with aluminium; heating the clad material at 450 to 500*C for 1.5 hr; Card 2/10 hot-rolling the bimetal strip 6 mm thick to 1.5 nun, 65695 sov/1-16-5 9- 1j- 12/18 New Developments in the Production of Aluminized Iron according to the following rolling schedule: 6---.~,4.8--+3.8--+3.0-+2.5--7#2.1-+1.7--01.5 mm (kerosene being used as the lubricant); cutting the strip in 3G0 nuT, lengths; annealing at 45Q*C for 2 hr; cold-rolling from 1.5 to 0.8 mm, using two passes with 15% reduction and two passes with 10% redttction; annealing for 2 hr at 450 C; cold-rolling from 0.8 to 0.4 mm in two passes (15 and 101' reduction); annealing for 2 hr at 450*C; 10 rolling from 0.4 to 0.2 mm; annealing at 450*C for 2 hr; rolling from 0.2 to 0.1 mm; slitting the sheets to the required width. The finished product, constituting a bimetal strip 90 to 100 mm wide and 0.1 mm thick, was comparatively hard and the attempts to soften it by subsequent heat treatment were not successful. Various annealing temperatures and times were tried in order to produce soft material free from dark stains (indicating the formation of the intermetallic compound FeA13) but to no avail. In order to simplify the manufacturing technique and to minimize the harmful effects of diffusion of iron into aluminium during annealing, the process outlined above Card 3/10 was modified in the following manner: the steel slieet was 6569" SOV/136-59-101-12/18 New Developments in the Production uf Aluminized Iron first rolled to 1.8 rwri thickness, i1ormaiized, 17ickled, brush-cleaned and then clad on both sides with aluminium strip 0.2 min thick. The subsequent hot-rolling operation was carried out at 180 to 2000C since, at this temperature, no diffusion could take place. However, the product obtained by this modified method (whose complete schedule is reproduced in Fig 1) was still unsatisfactory, so to slow down the rate of diffusion of iron and to prevent the formation of the intermetallic alloy FeAl an aluminium-base alloy containing 1.0 to 1.3% Si anl'0-5% Fe (Ref 5), was used for cladding instead of pure aluminium. With this cladding material, dark stains appeared on the finished product only if the intermediate annealing operations were carried out above 540*C; bimetal that had not been heated above this temperature was stain-free and characterized by comparatively high ductility, the depth of the cup formed on the Erichsen test piece being 4 to 5 mm, ie within the specification limits set by the users. These firidings were substantiated by the results of an investigation Card 4/10 carried out by A.P.Smiryagin and O.S.Kvurt (Ref 9) 65695 SOV/136-5 9-1()-12/18 New Developments in the Production of Aluminized Iron reproduced in Fig 2, where the thickness (mill) of the intermetallic alloy layer formed at the Fe-Al interface during annealing at 5500C for 1. 3, 6, 12 and 24 hr is plotted against the silicon content (wt-~4) in the aluminium alloy. It will be seen that even after 24 hr anneal at 550*C, no intermetallic alloy layer was formed when the silicon content in aluminium was within the 0.5 to 1.0% range; the intermetallic layer was formed when the silicon content was less than 0.5 or more than 1.0%. When the annealing temperature was raised to 6oooc, the formation of the intermetallic layer took place irrespective of the silicon content; at this temperature the diffusion rate rapidly increased, owing to the presence of the a + P eutectic (melting point - 5770C). Originally, the improved bimetal strip was produced in lengths not excrieding 2 m, which were not convenient for use on automatic presses or punching machines. This necessitated further development work, as a result of which the following technique was found to be most suitable for production of the bimetal strip of the required lengths: Card 5/10 cladding the iron sheet (6 x 1300 x 1300 nun) with silicon-- 65695 SOV/136-59-lC-12/18 New Developments in the Production of Aluminized Iron bearing aluminium 0.7 Mm thick; hot-rolling (2000C) the clad strip according to the following schedule: 7.4-Y5.3-04.4-*3.0 mm; cold-rolling: 3--V2.6-42-3-Vl-8-> 1.5-01. 1-*o. 85-?0.72-,00.7--0,0.35--v-0.2--70-17-*J- 15 ---0'0. 12 -;P 0.10 mm, with intermediate annealings (2 hr at 400 to 4500C) at the 0.7, 0.2 and 0.15 mm stages. Although strip in coils 20 to 70 m long could be produced in this manner, the process was still uneconomic, mainly owing to the low output of the rolling mills. Application of heavier rolls made it possible to reduce the number of passes and to increase the productivity to 12 machine- hours per 1 t of the finished product. Mlarked improvemen was achieved only after the problem of cold welding of aluminium to steel had been solved and when steel and aluminium strip was used as the starting material instead of single sheets. Before the introduction of cold welding sticking of aluminium to the rolls occurred frequently when insufficient quantity of lubricant was used or when it was attempted to use heavier drafts; when cold welding (carried out by deformation of 450/6 or more) was embodied Card 6/10 in the process, this effect was eliminated. In its final 65695 SOV/136-59-lo-12/18 New Developments In the Production of Aluminized Iron form, the process comprised the following operations: (1) slitting the steel (armco-OM containing less than 0.05% C or steel 08KPOM with 0.05 to 0.12% C) strip (2 mm thick, 220 nun wide, 500 kg coil) into two parts (110 + 110 mm, 110 + 90 mm, 100 + 100 mm); (2) cleaning the strip surface with steel wire brushes; (3) cladding with 0.2 mm thick, Si-bearing aluminium strip (20 mm wider than the steel strip) and rolling (in one pass) from 2.4 to 1.1 mm; (4) cold-rolling according to the schedule reproduced in Table 1 under the following heading thickness (mm), initial and final; reduction (absolutelmm reduction (relative %) per pass and total; (spindle oil mark f'211 or 11311 was used as the lubricant); (5) slitting the strip into the required width; (6) annealing the strip in a continuous annealing furnace (dimensions of the muffle: 3300 mm long, 440 mm wide, 180 mm high); the annealing conditions are given in Table 2 under the following headings: thickness (mm) of the strip; rate of passing through the furnace (m/min); muffle temperature,", Although the material obtained by this method was quite Card 7/10 satistactory (the depth of impression formed in the 65695 SOV/136-59-10-12/18 New Developments in the Production of Aluminized Iron Erichsen test being 5 to 7 mm) and although no dark stains were formed, the formation of a thin FeAl 3 layer at the iron-aluminium interface during annealing was unavoidable. -metallographic examination revealed good quality of the bond between iron and aluminium alloy but the clad aluminium layer sometimes showed a tendency to break away from the iron base during the deep drawing operations. This effect was obviously caused by the presence of a brittle FeAl layer; the relationship between the thickness of tLs layer (mm) and the annealing time (min) at 600*C, for iron clad with 0.5 and 1.0% Si-Al alloys, is illustrated in Fig 3; (Abstractor's note:- the units of time used in Fig 3 and Table 3 for the batch annealing are obviously wrong: the former should be see and the latter hr) photographs, reproduced in Fig 4, show the microstructure of the aluminium clad iron strip (a) 0.10 mm and (b) 0.15 mm thick, annealed by passing through the furnace at 600 and 650*C respectively. To avoid the formation of the brittle FeAl layer, continuous annealing was replaced by annealing at lower temperatures Card 8/10 and for longer times in a batch furnace with forced air 65695 sov/136-59-10-12/18 New Developments in the Production of Aluminized Iron circulation. The comparative results obtained by the two annealing methods are given in Table 3 (continuous annealing - top, batch annealing - bottom) under the' following headings: nominal thickness of the strip, mm; thickness of the clad layer before annealing (mm and %); annealing temperature (OC) and -time (sec); (see Abstractor's note above) the thickness (mm) of (a) chemical compound, (b) silicon-aluminium compound and (c) average total thickness (mm and It will be seen that no FeA13 layer was formed in the batch-annealed material. The improvement of ductility attained by changing over to batch annealing is illustrated by data given in Table 4 under the following headings: thickness of the bimetal strip, mm; depth (mm) of the depression on the Erichsen test piece (a) specified in TU 1053-54 (not less than), (b) actual, after continuous annealing and (c) actual, after batch annealing. (A satisfactory way of batch annealing the 0.10 mm thick bimetal strip has riot yet been found.) Several conclusions were reached: (1) 20-Fold increase of the Card 9/10 treated material has been attained by the introduction of New Developments in the It"'r(Am t, j ot, ,1 tile brittle FeA13 laycr i-s CrYi-114"~1 il, content in steel , i ts fornv-O- i~--v iio, both low (O.fj35o) anil hi di :~o, 3 ) Th e f 0 Z- IT! -1 1. ()11 0t Ile I,* A i by t h e a pp-L i ca t t on f "i! i S claddi.ng atict by bLit cn irmv~x I There az it f 3 --ti r- ASSOCIATION:Leningradskiv za ,- a tpo r (Leningrad I la-lt- fr Ti Card 1C.110 LEVIN, Mark Mironovich, prof.; Z&DOROZIINYY., B.Ae. dotsent, red.; BELOUSOVI V.A., prof., red.; BONARIUS, N.N... prof-., red.; VOROBIYEV, F.P.P assistentY red.; GRISHCHENKO, I.I., prof.,, red.; DERKACH, V.S., prof., red.; KORSUNI, A.Ya., dotsent, red.; KOSHKIN, M.L.9 prof,, red,; KUDINTSEV, V.I., dotsent, red.; PIKIN, K.I., prof.', red.; PRIKHODIXOVA, Ye.l., prof., red.; POPOV$ I.D., dotsent, red.; SOLOVIYFV,,M.N., prof., red.; SHTEYNBERG., S.Ya., prof., red.; KHARCHENKO, N.S., prof., red. (Repeated swgery in stomach diseases following operations] Fovtornye operatsii pri zabolevaniiakh operirovannogo zheludka. Khartkov, Izd-vo Kharikovskogo gos.unir., 1961. 177 P. (Kharkov. Madychayi institut. Trudy, vol.58). (MIRA 16:2) (STOMACB--S URGERY) PUTILIN, N.I., prof.,vtv-red.; ALEKSENTSEVA, E.S., prof., red.; MAKARCHENKO, A.F.J, akademikf red.; prof., red.; SKLYAROV, Ya.P., prof., red.; TORSKAYA, I.V0, kand. biol. nauk, red.; FELIDMAN, A.B., prof., red.; FILIPPOVt,.A.G., kand. bkl. nauk, red.; FUGOLI, O.M., prof., red.; YANKOVSKIYA, Z.B., red. izd-ia; MATVEYCHUK, A.A., tekhn. red. (Selected works]Izbrannye trudy. Kiev, Izd-vo Akad. nauk USSR, 1962. 454 p. (MIRA 16:3) 1. Akademiya nauk Ukr. SSSR (for Makarchenko). (PHYSIOLOGY) TOUIACREVI V.N.; PRIKHOLIKO, L.S. Spectrophotometric determination of chromiu2 in the form of chrcedc ions in high-chromium steels. Izv.vys.ucheb.zav.; khim.i khim.tekh. 3 no.6:985-98? 160. (MBIA 14:4) 1. KharIkovskiy gosudarstvennyy gosudarstvennyy universitet imeni A.M.Gortkogo., kafedra tekhnicheskoy khi7nii. (Chromium-Analysis) (Chromium steel) USSR/Cu_Ltivated Plants - Co=ercial. 0ii-Bearing. Sugar-Bearing. M Abs Jour Ref Zhur Biol., No '_% 1958, 02464 Author PrikholIko, M. Inst All-Union Scientific Research Institute of Tobacco Title Effect of Bacterial Fertilizers on the Yield of Tobacco Seedlings. Orig Pub '193rul. nauchno-teklin. inform. Vses. n.--i. in-t tabaka i maldiorki, 1957, 3, 39-42 Abstract The effect of azotobacterin and phosphorobacterin on the acceleration of the forced MtOring of tobacco seedlings was studied. F'-periments, repeated twice, were cond-.cted at the All-Union Sciosi-~ific Research Irstit-ote of Tobacco and Rcstic To-oscco M-Akhorka (Nicotiana rl'.stica) in the city of Krasnodar in 1955-1956 on the tobacco variety Ostrolist 2747 on the hothouse plots of 2 square meters. Card 1/3 - 102 - USSR/C-Itivated Plants - Commercial. 0-41-Bearing. Sugar -Beariar:,-. M Abs Jour Ref 711-ur Biol,, No _;.8, 1958, 32464 Ba!~te-_-.!-.* fe;.tilizeis were applied d-ring the crosslet stable of the seedlings (azotobactei-in was applied at the rate of one hechai-e 'Lot to 60 uqi,,nre meters of the hotho.se area, and phoaphorobacteriti la the amoont of 50 cubic centimeters of liquid or 5 grams of dry prepa- ration on the same area). According to the data of mi- croscopic analyses, the mediom of the tobacco seedbed was favorable for the developmeat of azo-tobacter. This was confix-inecl by Uie appoarance of an cnC;roken film of azotobacter on p1ot3 which received azotobacterin. In addition to the local or apontaneous azotobacter, the applied azotobacter also developed weli in them and its amo.nt increased rpon application of phosphorabacterin, Mineral fertilizers inteasified the development of azo- tobacter. Bacteria.~ fertilizers did not increase the ag3re-Sate crop of the seedlings fit for t.-aasplanting,, b,A t"Ley accelerated their matitring (especially Card 2/3 USSR/Cultivated Plants - Commercial.. Oil-Bearing. Sjuaar-Bearing. M Abs Joar Ref Zhur Biol., N 13, 1958, 82464 phosphorobacterin) which is important in carryinC~. out tobacco planting d,~rin.- earlier periods. Bacteria! fertil*_47.#,rs died, nc.' show any s~l.bstantial effect on the hF-dgit of the b,.t -they increased their weight some~,~~itt. Therr; ve.-, a larvae a,,noiint of smal). 1,,mps of soil o:i the roots of the seedlings which increases their ability to take root LIPOn transplanting. -- L.A. Lomaki- na Card 3/3 - 103 - PRIKHONIKOV, 0. F. PA 245T88 USSR/Ibteorology - Fog Nov 52- "Causes of the Formation of Advective and Frontal. Fogs," G. F. Prikhonikov, Cand Of Geog Sci, Kiev State U '14eteorol i Gidrol" No 11, pp 40, 41 Radiational cooling in the process of lowering air temperature is important in fog formation. Concludes that advection fog is formed between 2200 and 0900 hrs in 45% of the cases. 85% of the time frontal fogs are formed in the evening, night, and early morning hrs. 245T88 PRjY..j4C).ijOV, E. Relonder for the ~dnking cutter-loader, Sov.sha.~ht. A. rio.4:29 Ap '62. (MIRA 1-5:3) (Coal mining machinery) .PlIKHOROVICH, Ye.F., BOGDANOVICHI N.A., KOGAN, M.S., BLOKII, G.A. and ZHITIWA, Z.N. "USSR work on formulation ~f rubber for protection against x-rays," Khimicheskava Fromyshle~--.nostl, No 2, pp 10,'-101, (36, 37). 0 SO: Translatinn -W-30667, 12 Jul 1954. PE I E'i it f ~ 11 ! V , f, . ; ~JJ(W ',.A' ~ J,( I, I'- . I , ).I I SpecLral studies of azulpr.,e. Part. 1. (~pt. i spcktr. lp- 390,14,02 Mr 165. ('~T.,'~A i8: 5' 0 0 0 0 0 0 IS 0 0 0 a 0.0 0 0 b 0 0 0 0 0 IS 0 0 0 0 IS 0 0 0 0 0 IS 0 0 0 a 0 0 0 0 a 9:0 0 0 0 0 0 0 0 0 9 0 0 0 0 a 0 0 0 0 Otee " v - - - . loo I, Q A) 0 " xe a C 0 too c 4 A L It 0 PC a I V, " A ' " " , , AT U ti if cu zoo 0 0 0 0 0 o too 0 0 ~ I too * 0 to! i -ul p1cmzo V.Ipadt ;-41 Y- ^00 0 0 U!N'o,, alp timir.13iftialul AAwnplmo oi.~4 uIllywi. so App!m 1.1m ~1211 .13111!. ju .1113tu.1a 1.1111 " %Ipmu s u pur tI"!I4fim lm" I um muliaoi go go:: l q l j l l ~~p 00 so"' ru-3.0 pa-Aijifuum put jqnbjj "411 )0 3941 01 JBI11111% d 00 %I lulu l a4l Ili u(jinflijolp jilmal sq) rjnpwq!jmm - " -jL 0 e u 0 w 00- PUT . %fajOj m 0113 "3 mil 1*1 JAwnin j 1 Il l 09 ~1 t1UV VLU.M)j C IfT JO) AJCJ!~!A aq2 Ul PGOU!~Iql) QIJ3Ak WI-13,Ck i 00 I u mdx"T PUT '*"my!pous C wl! ul 0 p!fm Supe,opoid xi) - - V pull UUrUj3qnH Z 'calizo p1jois jo urnnuds uoqdjmqv sqL 0 go oe- all 00 , o of , 1. moo" fq- 't, ' I A A I t v b a 0 l I 11 1 1 1 1 A I : 11 a'11 S it I 111 " 91 It m of 'q a St PC 0 a Il 0 9 0 000 0 0 so e 0 0 so 0 go , .7 0 0 .0 0000 0 00 0 & 00 0 9 Goooo 0 0 0 a 0 0 0 0 oj.~ 0 0 0 * 0 IS 16 1y Is W It 44 A I v jr 4 -9 A L 0 1 "IL A % ", I , lilir Ck IT u 1`11 OJF 0 f A p ------- z 111111161111 it *00 7.040-:-.7 It C, oo 101q. 10,111JI1 R1311AU 1-01041 Atli NUIU&S,41803 114111111FI(PI *&.a squirij Aivirputta4l tmqlai jll!k!A aqi tq "jw C *q; m jrj!ljj!s SPIM, I S! P, A.'" v in a"alt!NA aq) p4wtal -Y JO)t still fxflp 134aftiml ci-11 1q,." jn timilAods umsdit1wqll 00- All Iff (pni4 V-- 'git1ji 'or 'r '.7 '1 I 1401AW .1swilliq" P010 a in -ndilm"s Ou 11 M M 24 Vk -11F if it it a at w I? it a tifiriOD1.110S p I r I 9 0 o to 0 o 0 0 o 0 . -:1 p"RiKITY-1 I KO,.- . F ,--7 -2 1., -727 fil- -o f-Luorescence cmectnin of' -.nrl rhemmtrene lr-,,i.,;4,Allov antr:~~.-.-,cna 1 f,=,in"r.-irm. Ziiui-n.,:.! '~"k:--movin-cm 'no 1 1 (-:,!-0i 6(10): 1062-1.01'! -1--" 0 0 0 0 0 0 0 0 0 0 6 * 0 0 0 0 0 * 0 0 0 a a 0 0 0 0 0 6 0 0 0 0 0 0 4 0 0 RIJUUM1116114 eta L-1-11 9 0 9 0 a 0 0 0 0 : : ; * 0 0 0 8 11 N a j4 a a V x a 0 0 a 48 'A 4 0 PAOUIS46 doe NeOPINIFIES woo 1 2106. Abawptke SpOeMm ai Pbeasoathrafte sad Spectrun 4d AlRdW600100012VA108. 1-W.ObMN"T~oadA.FrM&oQko. Pkyx. 0o f ZWO. d.AWJWMs&,%, 1. 1. pp. 84-ft ISSL [is Esq?W M old phomax-throne in polariged W consists of three rrgimn . the S&SIM&M cav-t.; Consists of a few tin" cc narrow weak is the main Spectrum: the third. beyond UOW coto-k. consists of broad diffum bands. The sPectMM for the light vector parallel to the (010) piano consists of bands which we :411 a little narrower than in the ""bu of the other component. Tbew to an narrow MW broad spech Photographs, meagurements. intenaffia OW daft Jor these two -1 P1 in each of the three regions, with thick and Oft crystals, arvo given mg dhomined. The spectrum ot an- thrmemisolomMulydooKfAukdotwooq ph in poladoed light showing a roon" rMutbilaws, The absorption bamole we so broad and num thmSdISYSMOVINIP-111 Ovetbe impreockoos oftve very broad bands. With PDbH=d UgK those bamda slow a diftent wWb according to the arienta- thn of the podarisatim. The spectrum ol gameous anthracene is very sindar to that of tow-Cryoul, being a Supoorpodtion of both cryvbvinc spectou the bNed good the marrow. Results am discu3ned in reUtion to crystalline Structure. M. B. A I L A ORTALLOSISICAL L"11*101 CLASUPKAIMS -00 -00 -00 -00 -0* -00 -00 goo 200 goo so* goo goo see coo see goo WOO woo So 1) woo it ir Cg i It IT4 Uo *01*oO*ooooo;oooo see 0 0 0 0 0 0 0 0 0 0 * 0 0 0 0 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 ' kif Is 4 11 '1 1, z ! it )I a )4 11 it 11 A h it f! A 6. L. I -A I L L 6 N F A-A 04 M ti A 06 - I , --- -- 0 a .2i I ~ e- 4 - 00 Absoripflon spectrum of solid asySen In the near infts- ' 4%' J I- ,vNI th"Pet- 1 red region. A, Ptilthot'ka. 00 Si- - , V, S. S. R.) 7, 9!:9 ~Oq MI.* 1. ( 1 -00 111~19111 KIV", vll~ 11411- I-JIM, .1 11"wil. ~: .00 R1 Ill. . 041 spe r 09 0,; 00 0 Soo Zip 0 zoo :-0 0 =00 no 0 A I L AITALLLOCKAL L:'fXATLN! CLA$i1FtCAT1Cft -og 0 A --o0 s r l IS it. .13 n J1 . t M K 01 a 't n tt it 3 04 STI: v 'I P ' i 0 0 0 * 0 * * 0 0 0 V: 0000*10 0 0 * 0 0 0 0 * 0 0 0 4 0 o go go 00 .*so* 00 0 0 00 0 so 00 0 00 0 941 0 0 0 * 0 0 e 0 a 0 0-0-9-0--w- ea. II I A I I I a I is it 11 11 4 11 u 11 ts L6111 a,- a Jd' A A 'V a m I ja 11 u a .4 v a It a 41 #j u " a 4 M, r 2 1 -1-1. 1 a Cc W,Ui j -A -A A i If k *.-A-L-Lje 0* 4 .,so so 91 jell. at I I. Abowpdm Spectnm of S*W OzY&S In the Fw R*d. all 1! so Xv "pOOCSdqWOt%"A Imp b=%oqmwwA -yo" of Ow r-ddmtim 0 2 wm &aW*Mt, 4110 dwxpdwApo*a Pd v, 4s -d 11"M 0~ bo- be@" o0 j! OQftvvpkAA*Mw*r nd woo ACOO I It 120 bftkt SbOWn so a! ban& of ftAlm 11r;- ~ 'A. AR4 =00 00.4 00. a empficuted sbwtvt* 00 ol the band mq-Obmi bubma At Ow Vs and cbuac&*4stx 00 z 400 200 'Is -Zoo go zGe S I L A X1T4LLVVrKAt LITIROOt CLAWFK010- fz us* ~" -J-4 .4;1.1 U-1 j*0 .-0 - --1#-u--1-1--.- , - 64 1 04 0 4 *-Olia is a IV It 2 M x it w 2 ff at 09 410 1 A" 0 o 0 0000 0 **of 0 0 *00 so 9100 0000 0 0 0 0 0 * a 0 0 0 0 06 0 0 * Otme 0 sees * 0 e 0 0 * * 041# 0 is 41 0 0 * 0 0 0 0 * 4 0 0 It 4 0 0 0 ol~ - - - - - 0 0 0 0 W 6 0-9-V qvw W-W-W 00000 0 Ow v. 4 0 Wi S 0 0 0 a 0 0 0 0 0 0 0 0 0 0 a 0 0 0 1 6 0 0 00 0 a 0; a it 'I it w Is l t I 1 4 a A M 4 1 0 t I -1. 1 AA H a " F Q o 0 1 4 0 0 ~ A If -M, "d 0,-A be. Zoollif misrtwes of 0, :: 0 4: t' , 7 OZ 2400 A A Prikiwilo. J. F-rp(l. . Thevril. Phys. (U. S. S. 671-81(IM).-Trans. 00 it. Parent Crystals of O-N and O-A mists. wete used; -00 their abomptiott spectra were photographed at liquid-14 W h -00 V imp. w t e results limi in 12 tablet and graphs. The 0 iqwctm of the riliml, coux-idir with %how CJ %Aid 4) -0* 00 A~* unit toughl with thow tit gametRis 0 under high pressure. Wmwn. 70 takes placr in the cryst. as well as in the gas 0 state. and the vultm; twind from spectral data agree with -00 show obtained by extralvlaticin from the gas stair. ~4 so 1.0 so .3 F, J1. Rathmarin zoo 10 coo I 4p coo 10 too 0 ' goo 0 0 LLUJGKAL LITINATU41 CLASSIMSUCO A a - $ L A AtIA --i-11 .811. -- . I " ISIONJ -it 0.- 1.9 0 it' 'If T of 16 0 0 0 0 0 0 0 0 0 0 0 & 0 0 0 0 ~O 0 0 0 a 010 0 0 0 * 4, 0 0 0 0 0 0 so* zoo no* too 0 i v is I a a 3 1. In M 0 0 0 0 0 0 0 0 0 0 0 0 0 0 a a 0 0 0 0 " 0 0 a 0 a a 0 0 0 0 0 0 0 0 0 & 0 * a 0 0 a a a a 0 0 0 0 0 a a N 0 0 0 a 0 0 0 0 0 0 0 a 0 0 0 0 0 0 0 1 42 4 d5 I u cTs., ba it U it C. T IS n IF r of A t 0 a PC a I I LAW On 1"M1.111111i. 0% 1 *or of 90= RTG 0 Off 00 00 Do 00- PPI, '111,164TS 'T 'V OOK-mt P aittlu, SIP 111 V-10 P99 Im"O jo stimnim pg- jo -o-qw eU F I vv I j r 4, A 4 T I v 2 is n m a q %I it tin lisjuva.it Ulf" tittle at it 11 it sw vt it -q . I I I I # I 1 0-0 0 0 0 0 a 0 0 0 0 0 0 0 0 0 mk-.4 0 0 0 0 0 0 0 00 00 0 fees 0 0 0,0 ,~ 00009*0*006-06 0 too 0 0 f 9 - 00 00000 4 O-P 0 0 0 a 0 4 0 R76 40thlro CO 0 0 0 a 0 00 0 so 04 1 1 1 A w A I a v w I 1 1) 11 If It W If is II JID 1 11 it '1 14 A a .1 ~, I, it v 1, 11 a h a 0 .1 .1 0 re 0 * a a L-A" Lam F UK I I I if AA M- I AbwrptioU of Ii I by crystals of brontina and uthet 1' Ck" ki k Ui d V _01111 . , lo ti tum Asi A. N ' halopus at 10.4 -00 11,111, J I-SM V, I I I) 1 -00 , I.1.1!n It IlKlit"I all colot 111.111 t liv i1q,lut'. Ut. it I iiiiii wvr~- ts-d III, 1 J I I AO 1 7 ...... , A.. Ow lup,ut N s,snp -d, Ill, I I J-; INJIld IwAs !624) A. CI, Awwcd "IlIv "Ste W-AIA It-,, 11 1, all-I -Cl~ A---- 0 j1-1 I'l wn Ill 09 0.. 111,41.1tt 1;1."Il ille pol, Ill 1.11 vm, g% ' A 0 . -tk,lwlv IIIAI N (gol.1 III,. %thfAtt."'Al &0 0 -00 .49 Ala It A t?AttV*GK&t MI.Al"I CLAVIIFKAfIC" rA ;.40 0 u is IV 00 411~ I T .1 1 t Ov (w a ON a. I w 41 a 3 leffertwit arm KJT 111 11 ff .13 q # 4 I ; ; 0 0 0 0 0 4 0 0 0 0 0 0 0 0 0 0 0 9 0 0 , 0 00 0 9 0 0 0 0 0 :ie 0 0 0 0 0 0 0 * 0 0 0 0 0 0 & 0 * 0*0 0 * 0 0 0 0 0 0 & 0 0 6 0 0 0 Os . : $Is 6446000*41119#0400 ef(A' 00 A 09 a 00 00 66 0 :41 0 :0 0 0 0-0-0-0--W-0 . I.M3rv--w--w ~ As 0 W'4- ** 110 -10 Is '-N J1 L? 0 M A M M is v v v q ti A"A A- -a A- A I." -J~- 40 1-00 MOM) (in English).-Ov and No 1-m solid Osolus.listberenget)-15.7% No and G-M% 01 with atutce- tic point at 22.6% No at 60.1'K. WhM Oj-Nj CrYstsh fortned by very rapid cooling, and of varicols compo. . are heated front :Y?A'K. up to the Ill. P. ($two" < 6P K.), ad 'I"r, nd A. Yoovnel. Ado yikochim. 1. A. A S M - I L A WITALLUNKAL LITERATME CLASSOPKAYMp am qb fA 0 AV 10 11 0 0 0 0 0 v, 099400040606 0 0 0 0 0 0 0 1 '-so the crystods fir%t txvome tufbkl. then spin alm dear and -00 fitudly mett. Below 10% (h. tile C Y" Is r-main clear I a .00 1h. front 15 In ,-,. and melt at 62.5' for 0%, W.4 for I they are clear at 20.4', berow turbid at alkx t 50~ ()g "' * K. befoir writin 27 , hu spin clarify itt :11141 . t ;.0 W for 30%. M.2' it* rj0%l-. from W to fPJ% the crystals ' . . but become dear at about 44 am turbid already at 20,4 , - * ' for &5%. 50. 1 for ,..S% 0'. frooll OW AM melt at 51.5 CIO 0 to 84.3% the mists. am turbid throughout the range studied, wool It= 94.3 to woorty 100% Os the turbid inixti. clarify at about 42* before melting at 81.3' tar M. LO 0 for 100% 0,. The absorption spectra of the turbid phaw 00 show more intense bands. spread out mom toward the . violiet. The two transparent phases abow situilar spectra 2so* " t that at the higher temp. the bonds are wider and h h d 4 6 r v t mt t e ~Ym& low leff atructurc. It in cowlu I obtained were unsiable undercoulcoill crystiobt of mqgvu iu $-nitrogen. which disintegrate on warming abuiv;~'K. i f L i l i f 00 s o n urm crysta n and then on further warm h ng &p 0-altrullen (about 41P). The 0, Worts are shifted by 4 600 100 A. and 16 A. for the lit and 2nd series with reop-t to those for -oxygen, atul must of them a PC%( as doull. '00 Iva. Rathingrin boo MCI Is --- ....... 1 V -0r9 T-Ort ap lit ; I& A I 17A AM L t I Q 0 it a I 960600090009 0000 0 0 0 00 09 --- ~00" 0 0 a 0 * 0 0 0 0 o 0 0 * o 0 * 0 T 6 0 0 0 Goes 0*00 4 0 0 =70 0 $0 0 0 0 -W. a At 11 12 is 14 1; A? to, .0 111' VAl Z11 6 449 00 0 0 0 go o 6 0 0 1 0 0 a A . I L 1 3 11 11 is It As x a v Mig A AL A 0 di W d'_P 0 09.3 ,__ - - - .- L-T- 0 # AD*- 0 0 J uld ammonia, 1 sefid and Us Of li ht b Ab ti -00 -00 . on sorp l g y : 00 oer M ts in the LsIble and ultrairtalst calling. r',SWLWL"-!!, J. ExW. liseare. Phyt. (U. S. S. R.) 3"10940).-From W)O to 29W) A.. the abttwp- _00 1 -014, ion spectrum of liquid and cryst. XH. ts~ the 'of point is continuous. and is sirmigly shifted into the ultra. Wit) cm fur the uid 1600 th li i f l _ cut. or e v . o ict ( , q 106 itistive to that Ad iuitW absorption of the pa. The ab- -90 ItArption limits for MW Now are, few.; 24W. "V "all ."evessaaaft Is So Whared 2W and 2316 A. . -00 Ago* U1 region. /Nd. 4(".-Tbe abomption spectra of liquid Zoo aq soLW NHe frogn YM to 10.00U A. contain coa- are the same 0 between the zoo sulid pha~. !lan 'Pectra The doublets are ovrrtone doublets with A, TAXY1 Cln. -I ~ the ablOrPtim spectrum of the solid Is blAifird by 300 79 go o cm. with respect to tIuAt of the As... F. It. R. goo ;too I L A ITAUU 114KAL LITINA11041 CLAIINACAIMN tie 0 - S Ago 0 A I Islas,) At QMI Ogg - V - -r 4JLMQMt t _ 41till OVE QkV &it - U 6 AT 40 " " T - I F 1 5 4 ; ~ ; ; j, it a it K 7 1 1. 1 i I W a a 4 3 N An I - 4 ev , 1 101 I 0 0 6 0 0 *1 to 0 0 0 0 a 0 0 0 0 0 0 0 0 a 0 0 0 0 0 0 0 0 a 0 a 0 0 e v 10 Is Is ill 11 1, 13 1. is 11 v is is 40 41 u 43 at axe A A -C.- IL 00 ILL' A L-L-144 - - - - - - -00 - - - - - tion i WLd and liquid smino~l~. 1. A o b t to s boap tia The TO'abucoon Wctrum from UM to ZOW A. 11. 00 Absorption spectim from 10140 to 5000 A.,.A..I'tik.- but,ko. - Aeld'elipikakin. U. R. S. S. 12. 669-64. 5(~5- 00 L(ivlo) Oll Evg1iA).-.1kc C. A. 33. 1&0. E. 1. C. of 00 00 00 00 oew 00 0011 zoo 00 1L A M.$LA OCIALLURrICAL. LITERATLARI CLASSIVICAUCIN u 30Z Ir WN)~* -7 IN "Is') 41t a., 'It, 4141110.1. ca a.. ill 0 U It AT NO IS it it IN two Pi DIN INS " in it it K Kw n s ic a It It a It tr I : 0 0 0 g : 0 0 0 0 'O1 0 0 : 0 0 it 0 0 a 0 0 0 0 0 010 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1000 our U 45 'JUL AL v IF G so At 1 0 fu 4 Tz. It CN AT is T1 .111(t .01I.Ndlif.13 vanil.jill 113104111, a 1. 1 f s v 0 rIW3' &3 for O'er 111M) 1"111121% is 11'.1131 1 l;.-Amlailikil) o INV I Xf 19 , wr * V'd lj.vy!~vp 0 W. jjj"jrjjIjA Isur iiinirmilA 141111nJIM 11P .111 **mm, mlmij~ja .11 .61111pi vil %.Hl~ will(IMMAIP .1111 - C. mll , .111: , I 1~. Ill stills) -I, jr llr)%A I vati I ill still jj.kii6 Ism lit li - Ist.lil I Xill 111dilifl., Ail 'Jill I l 'A liow-to wp-I .,,Is Ill t mll Suillintp All AIP111111- t17 l~lj" -.1 " Ill % .,I.t -ml I fa 00 00- 1:; A q'immi aili J-0imp All litly %.1.11 all) 1110 Ill I!,11. ill .,ill %,I J.,I)II. 1111111 ill :: 1 1go -idut"A afI.L JPIA F311!1 Jilin 51111011 limpli-jr, rjulvii ill p-,qdr* -1 1 r00 of- 00 AINITS, 2 U0q&O11qV 'At 0,, in au pMqa- .,r4J;;.dtujj All, is stirisin )is expads 'troTAjovity ir 00 00- 00 r -U-W XF-M -W-T-T 00 0;0 K a w Is or it K a "(Siri 11 DI A 1 7- v 0 0- o :0,0 k- op I'm a is 0 U a 16 is U a a a 00 A 90 0 A 00 go 00 0 *: so '33 '41 P1141:111,11APS AND 06tw9froff mmp w it a 0 41 a Q 4 41 Nor, A- I,-" cf!_OFML__ Abst"CiPt" afircull'of ainaff Crystals of naph"Woras at WK. A. Pri Wicks, /full. wad. ,,, V R..%S. .%i,. pby,.. 9, L'I I 17l 191,N)i1j) HII-Lifs). %I F-im 1, still, lit" i,twetnifil ..I 11414111141clic ix"llb6t, .4 tlllfttw W1111%. Ill the irgioll 110111 X1441 I., A. On C-4ing 1,)Wll W the ti-sill). i)1 bri'l hythogro). the are re-1vol ifil.0 & 111111tituds: i line.. 11AMM 'I'lil Wtul, ,ilh A "trucluse. "im- .,( Ihi-tti'"Ify 11"furahl" its roun. IMA, Ml, It- 11141 driAll'i it( 41111% title ClIn lie 449W1`41-11 -IV 1., ," i I.... kyrs. Ill.. ..... 13.14 sit ~111111) A. mosd toundwr almna :11 ). At W ),,, 1-ilt tit, Ib ptiou arid the flimfe-ortice spirdrum wi,w -w-N-4 ill 114111. Mil.., tvirroilloolditle tit d.... f!'"fic frall'itioni 4-wilchir in 11"Avvioceme Awl ill Al-11, Win; the wave numbers (in shumptiorn) of the coinciding IMC, Are. '."5, 310M.'s, 31WI0.1. anti 3100; cm. 1. vrolin thew liwis. the following IS pwriods td vibrAti-wal prolucoissione comM In dot : At - IN, 210, NX), 415, N211,71b.M.M. NO, 100). 1135, IM W5,1310. IMA), 144-:1. ISMI, .3(M em."$, )Umkg-s prWrist,hill's vigil 41.1 '"' 11crivett -6tarting from the Unit 31730 cm. -1, which there. ,,at Carl id- be cunwiticted as c4scre"ttli-tit tit a purely clectrottic(riArmition. The corresporaidegicc o( th- Wfp^i% to intrattiol. vibmtions is proved by their identity with RainAtt (trquencit3 and witb istirsured frequenci" isf Bins. ..f The low wave numbers r - 2,1. 13, 67. ,%list till vm. 1, iloubth-~ prewnt in Al-isfilpsts, awl ill, 101,11V Viol& Ill P"bably lk-1.41s: I., illicifil'.1 Vib V( -WO tLtOlt N I A Is 4 - I L A ENTALLMMAL LffgRAIWW CLAUPWAIW, &d- 14166110 NAP 'iiv gag .11181 ~_ isg- - 0 1 4 6 A U I w 0 4; -ML I a ad 0 a w -I w #A 0 A .00 "09 -00 so go* 00* see 400 Mae, 41010 fee 590 to 0 lee too Ja* PniKH0TtX0, A. F. A 19/49T89 um/ftyslos sep/oat 48 Crystals, Organic Crystals - Oscillations "Blectronic and Oscillatory Ievele of Raph- thalene Crystals and Molecules," A. F. Prikhottko, Phys Inst, Acad Sci Ukrainian SSR.. 4 3A PP "Iz Ak Nauk RASR, Ser Piz" Vol Wo Treat subject under vapor spectrum, oI"eifica- tion of spectrum lines of a crysU~L, *and A- lines and B-zones. Special diagram shows re- sults. 4&' 7xqAqr8q 0090000*0*0 see 7.0 T - em- ~ "-~n -.1 I A I 1 9 to It 11 1) u Is 96 It 14-1111-k-I-IJAJ I'll -A"t, rqj~!".vw go. Ar it u 111 Is All P J) it a it x is m A. Q u zJR OKI 00 -00 Dispersion a( Anthiacene crystals in the visitile page at the SPOWUM- 1, V. (Havilituv, A. F. and Aw. 141P11. Fit. I@, IIAI 1~, 0IM-41, 1-*of ivv%til, I'Malurd I)y mil,11111iti-I, .,I it,- wAv, Icultih, A WPOI, SIM. -Ilklil. IfXW). 4:111611. 114111, IIVAI A., - 2 111. 2.22. '21 'N. 1.1.31, '~' 3.5. *.'~ 11 ` ' 1 -411 114. 2 ..M; Poo 1, 611, 1.1417, INI, IAX1, H17. 2 117, ...4, .-42; 1.67, LIA), 1.131), 1.6ih, 1xvi, 1,117s. 1.7115; anitle betwern the optival uxi% anal liar pi r- Imudictil.ir III Or (IX)D Farr, 15.0, 14-3. 1-,,X, IWIV, 22 2. , IIA' -Iw 0 911 3 35 0 1 ill m l 111 il l fee . - - . I%, e " rrtt , c np vo , ; , , li S5, K1, 711, 117, 51. ;W". Valn.* .4 thr tvil't, lit OW .11, I ilia ".. Arc, j-p., 311311, 3731), ind 37M) A.; CIO 0 3.f#;, 2.910, 2.V, and 2.W; /I - 0.512. 0-17). 0,087 and 1).f)91,. The -e 4,,cilliutr . -Imigill. calvd. lty.j arc - 1,01. IW;I. 1). 17, and 0.17.. N. Thmi _!SO-ILA "TALLUSCICAL LITIMATIM CLASSWOCJITIOM 111* 0 =0 41 AV to As to i 1-9 li of ig a Ii dt 411114 r-O MIG 0 0 0 0 0 0 0 0 0 0 0 0 a 10011,11, 0100000000 0 000 0 oso a 4 0 0 C 9 CO lKlectionic and vibratictisal favele of the crystal and the molecule W naphthalene. A. It. PrikhoCko. Zhur. Fk,141, Fewtl. Pis. 10. 44, 433lb. -The newly det-1. sitectruin of the vapor coincides with thAt Of ltellfi Anil Uutilb (C.A. 18, 24M) only in the fri,quencyal the Ist electronic transition P; m :12155 cm.-I but differs in the vilw.stional struclure. The vibrational frequencies astricil. with a,,' are 473, 7M. IM11, 1181, 1414, 1"O. and P1,11:1 rin. 1. without distinct combina- tintsti. The 2nd rimiti-sir transition P;I - Will Is attiord. with the vibralloni IM and 1379 withl Intense combination frequPitcIrt. The rutatlotial branches, dispo,ed on the long-wave side of the hand heads, are unresolved but (to show altrru.stitme of intensity. A few weak hands are due to transitions from excited vibra. tional states of the ground level. The spectrum of the crystal consists of b 1*9 - ~p g in light polarized prArAllel to the mix oclinic axis lying in the plane of the 11take, and a lines, parAllcl to the a axis perpendicular to b; as a rule, b lines are more intense than a. RistAtional structure and shading are completely abient. Part of the lines. or bands. can fie groupeil into series. Othet lines from satellites of Ic,wr intensity around the serial lines. All lines become increasingly diffuse tovinArd the ultraviolet end. The spectrum has a continuous back. ground. more intense ArFAInd the scridl lines. All series of the crystal can lie divided into 2 cateffnrics. The Ist rategoty conitiriu-4 writ-i %hownic it 111%tiliCt JUAlOgy with the spectrum tit the v-.klxw: the lines are only weakly tiolarized. i.e. they jppeAr in hinh the 6 and the a coin- ponent. One such series begiim with P; - 31965, corst- bining with 4M, 718. IM.M. 1113, 1191, IM, 1431, and 1577 cm.-I, of which only 71H 1wrisibly Appears as the hArnumic 14:11; t, - 3:17.311 onnbi"~s with the mail. VIIJI'Ati(XIIII 518 Anil 13AR. blCtIlk-Al With the 14AMAII ftV- urucies I$IX and 1:194, Anil with Intense COM11111AIIAMI lines. 1. compared with the vAltor. P; lit the crytt4l Is shifted to the red by W), Pit by 211PJ cm. 1. The 3 wries of the 2nd category have noanalogy lit th,- slk-ctrum of the vapor. and in SpeLitic for the crystal. The Ist series of this category begins with the pure electronic -transition line r, ~ *U41, and combines with 212. 4418, 518, WA, 9W, Anil 13.93 cm.-I. A 2nd wrici is built on P; - "I. appearing in fluorescence As A weak double line 21P341 And V.Kifl. Anil in almyristims as a double line 29914 and 21UJI. of which the lit 1, 6. the 2nd a; tinly the former -rJ'A7- combine% with mat. vibration frequencies. 4M, 724, I=, and 1.191. The 3rd series, based on the electronic transi- tion P; - 31062, is the main scrics in the fluoreicence tpectrum, where it combines with several mol. and lattice vibration fivquencies. In absorption, the corresponding Pines are 31063 (b) and 31050 (a). In thicker crystals 0.0-1.5 mm.) these lines are split into doublets of Ap - 22 cm.-I. Two weaker lines. 31WA and 31MO, appear in duortacence only. All lines of this category are. in contrast to the let category, strongly poLLrized. i.e. they' appear prefertntially as either a or 6 components. The some character of very strong polarization is proper to two fit"her groups. which. however. are uncormccl"t with any known vibrational frequencies, and must be attributed to elecuortic states of the crystal. One such ists of two A Unes 31474 and 32227; another 6 Fo ramu U 'by two B bands. 316W-3108 and 32241-321270 cm. 1. The polarization of the series of the Ist category 14 evitivritly dctd. by the symmetry of the mol.p that of the 2nd category by the symmetry of the crystal. Almmt. all fluorescence of the crystal corres as to transitions from st,itrs proper to the crystal and ruilt On " - 31M-21. The only transition from a state characteristic of the rne)., 319M. gives rise only to very weak fluorescence. .N. Thou aphthalene vapor. A. F kh.t !emo, zpactrum, of,,n R . AVA. ',, ,' K""' ;'"' Ekipil. Teo'el Fit, 19, is-, 9-N 1919). - I'lu 'j-1rinn redet.l. at lc 'Ps. varying by W* 1~t,mr"n 1.1 :.11.1 with 3 thickn"*," of the abitx1tint 6"t ~ 11. 17. t tilli 'n It consists of 3 series. cormspolli(illir to :1 differtot to the electronic transitions. The 3rd %Lrics rc.tcli,- 'it otti- Schumann region. and only its tat members we"r Ph graphed; it appeAr-� to be a series of %trong alwvptlo - Bands of the 2nd en'" beginning at about 44tXX) cm. or' sire mom Intense than thooe of the tit- Rwational sir her jute is too fine (0.1-0-3 cm.-I) to be resoly.ible in cit writes. All bands are degraded to the ml. 4nd the extcn- ,,ion to the red increases with the temp. owing t0 the All. porance of new lines. All bands have 2 rotational struc- ture branches. The hand edges are sharper in the Ist. more diffw in the 2nd series- In the tat wries, electron tmnsition rz - 32455 Cm. -', the Positions Of the blue edges of the abort or long branch tit the bands. vibration fre. quencitell (and int-sititts) are: 31511 (short), -L44; 319C (short). -41161: ;rZ196 (long), -. DO: 32455 ,hort), ". Iffl; XN72 (long), -, 4.5; 3-1928 (shart), (4 + 473, 85'. 33104 (long) - -', 't3158 (,hnrt). + 703. 70; -LrM8 (long), -, 50; 13457 (short). + JIM, 75; 335; .9 (long), -; .33&36 (short), + I 191, M; XV414 (long) - - 34NNS xWo (short). + 1415. 60; 34010 (long), much weaker lutnd:. (,.hort), + IrAM, 100. Two very 31511 and 31902 (%hurt) - aPPC*r in 2 1110-cm. layer at 50 - und dlsaiiti~mr rapidly with rising temp. The vihmlion frequcticiri, 47:1. 7M. IINC. I litil. I ti.% 19411. -1 11"Ll. fit. I03dAbt'irr.%II'.J ... Il'I In I 1.."'Inpaft, with lh,, frequencies, 41M. 7LI. 121h. 1442. mad 16LI4. and "tit$ III,- frequencies Of the er"t.l. The 2nd -i- i. 1-ilt the electronic tran4ition 11 -35W5cIn.--. Th,fulW-iixK are the positions tit both edges anti tnaxiin.! of Wild. (In - tensities estd. visually). and vibratinn freqnenric4 Ar. 35724 (beginning of lbt hand) , 0; 357,61 (11); 3579A (Iii. X%RZ3 (6); 33K% (blue edge. tons branch) (it); hort) (10); MS J10). a# - fH); 3&Y-15) (3); X041 (3); -Iftril'i (4); 35ftl Mine rilgr of wrik Nind) (I I; 'M;7 (0); M~%" (1); :162611 (;1); 3OLV9 (3), 3#~Jlq (blue edge. long) (4); M343 (4); 3t):157 (s); 36176 (8); 36398 (blue, s1wrt) (8), A, - +4191; 36417, (0); 36435 (01; 3t"57 (1); WOM (1); 364.~i 10); 3(%L1J (5); 36fti (blue. bhort) (5), A- - + VAP), interpreted as 2 X 493; 30210 (1); *Jl;9NJ (bitic c,lgc of Weak 6-ind); r, 37048 (1]); 371M (1); 37179 lh~; 37LI91 (8), :17~.'::fll (X); 37243 (blue, long) (8); 372:37 J.14); 37273 (11i); f%.NKS (blue, shoro (10), Ar - 1397; 374 12 (blue cdKc of'wvak band) (3); 37,4111 (1); :17,559 (1); 37(447, (h); 3,-, 13 1A);_ 37723 (8~; :177,17 (blue. long) (9): 377US (blue, hurt) ap - +IbW, interpreted a, 1397 + 493; 37813 (bluc edrc of wcuk band) (3); 3N)U5 (2); .18195 (4); 18232 (4); 3N294 (blue, short) (5), A, interpreted at 1397 + X 493); XS~l (51; .1 'VJ I V 311012's (5) 11014W . 1 (01; 3NG87, (tell edge of br,ud li.4nd) '(6), . 36 (blue edge of broad Wild) (6). .10 - _" X 130". The 21 vibrAtion frcquencit=i, 493 anti 1397, ".tnjJ4J`C With the l,tarnAn 512 And IMA. antl the tluor~s~cncc fruiluctici- 52t) and 1370 cm. -1. and with the spectrum of the cryst.d. N. Thon PRIMODIKO, A. Broude, V. A., Medvedev, V. S., Nechaeva, N. E., Prikhodlko,, A.A., and Kharitonova, 0. P. Faperience during a wide investigat--'on of spectra of crystals or orWanic substances at low temperatures. Pages 488 - h92. Inst. of Physics Acad. ~X Sci. Ukr. SSR. SO: Bulletin of the Academy of Sciences, I7vestia, (USSR) Vol. 1h, 11o. h. (1950) Series on Physics. bbdwem6 Ow wwk. 1. V. oh"l mvw wW A. P. Pt hod. Nsak.Y.S.S.M.:, .W. Pis.-Te.-504(i )-A wkrmb*w4rw~ .6 time )&ado type was constructsd and the so of &nthrwene was massawnd ballt IN the diremim of the b and the a axis at MWAid-N UMV. T%~ o ewvo dwm A abomptim betweam =Fbak"4110 A. Press i1w cwv" the tear fam is embd .Ow The chetrunk iremaltia" 4t,% = UOU A. mM h MW A. 7U moread tnuokim is to timan aw"W thme dw km OW histil we I I I almm Ow. Matnd "is ed on ad. It Is PIMM4 tkat Ow CK sham 611mr, electrook Vallaillism dmId gmiml, 8, Pak=" u IS 5 p 1. PRIRTDT"KO, A. F. 2. USSR (600) 4. Luminescence 7. Luminescence and light absorption in crystals of organic compounds. Izv IN SSSR Ser fiz.1f, No. 5 1951. 9. Monthl List of Russian Accessions, Library of Congress, April - 11953, Uncl. PRMOTIKOP A* Fo Broude, V. L,,, Medvedev,, V, 3,9 Prikhotlko A. F, Electronic and vibrating levels of the molecule and of the benzore -crysd~ P. 665, Institute of PlWaica AcadwW of Sciences,, Ukrainian SSR July 20, 1950 Sot Journal of Experimental and Theoretic Physics, Vol, 21, No, 6,, June 1951 7300 TT-541 AND ADSORP=4 OF CRIMTALS OF CH POLYCYCLIC HYDROCARBONS. (5yeahanie I Tavat Metallov Politsikilchesk1kh Uglevoftrodov). L,V. Obrdmov and A. F. PrikhoVko. Translated by WknV from Akad. Ndumm:Wm:m-., MW-atl S. L Vavilov 197- 209( The spectra In luminescence and absorption and the rtfrActive Irdices were Investigated (or it series of Linear condensed hydroaarbons (benzene,. napbtbaltue, mathracene, w d napMbaceae).at I-, tg-pgrafurgg 'Me results of this Investigation are discussed in detail. From a comparison of the arectra of vapors and crystals, . Me AqjGjKALh&WkLqf a crystal caa be classilled ALL the crystals observed were brightlyluralnescent. (B.J.H.) Z' USSR/Physics - Spectrography, Crystals May 52 "AI)sorption Spectra of Benzene Monocrystals in Polarized Light," V. L. Broude, A. F. Prikhot1ko, Phys 'Inst, Sci Ukrainian SSR "Zhur Eksper i Teoret Piz" Vol XXII, No 5, pp 605- 6o9 Investigates light absorption spectra in benzene crystals in the case of oscillation of. the vector Of light parallel to 3 symnetry axes of the crystal. Observes series of veakly polarized abaorptlon bamu in all cases. Series of sharply polarized bands are 215119k seen only in. spectra.in a and'c directions and axe absent in b direction. From comparison of ob- t&ined resats with theoretical computation, deter- mines-'the sy=etry of forbidden transit-ion in benzene as Alg-j> B2u. Indebted to A. S. Davydov. Receivedl 14 Jun 51. 211.51T-94 PP IFH CUP f V Structure of the molecule of digier! oaa%racene I its - ' - Me ev. R. III homologous 5pbstances. - R )d 1111"'y' " q . sr. 15-1 1 ).-Pure -A k a7. ki 1. s I 9-methylanthracerie (in. 79.5-80.5*) was transtonned Into its dimer (m. 22128-228.V) by irradiation of its ace- toile soln. by a I-Ig are-lailp and recrystn. Absorption spectra of the crystals sly)w 2 electronic transitions. The fin, serie3 nf [)road aln)rptiou bands begins with a strongly polarized triplet X - 3000.1; 4004.5; 4030.6 A.; tile second scrk-3 hai a long-wave limit of ubsorp- tiou at X - 2560 A. for ow, I.claritatiou and 2000 A. for' the other. This spectraill I!; entirely different from the monoiner spectrum, The photochem. reaction takes place not only in soln. but also by irradiation of monomer crystals; it can be detd. by the loss of birefriiigLnce. The trans- formation is effected by a change in t4e valence bond which leads to a configuration similar to that of hydrated anthra- cene derivs. Tim aromatic structure is lost in the central ring. Pakswer of the 4~ = 1 44. 2 by tte Choaxical Abet. ~Me**C V. ~._ MIXMEFI_F5~T_rl anA A. F: Pn_-k - - - V"~" 7 JV4 ftGURG A " 69 476 kLD ~aL # R Vol. 48 Kai 6 - . z . . . A , ., m*,~W , 7 Nhr d r ectr"co fcall alk thted benttaes Caa be (dentire . OrganM OhsmIGU7 e y. ~ p p y The spectra of some -of (he ptoducts are repr(Auc-d TEve folfw%vior chazaerristic pumfy~ -ketrwic ficquetteles were observM at - 100* (the state. of the Smimim %Mn): Reph, Cry-4t, tow-temp, form, 37.M7 cm.-t-, - HtPh, crrt. high-terap, jorm, 37,2a3;, ' PrPk 4uncirphous, 37,231; cumene, amorphous, 77,340; m-CAtM, , etyst, high temp. form, 37,225; p-xyfene, vryst.. 30,10. P-EtC41f4Me, cryst, high-temp. wnn. MMO: t-eymette. cryit. V1,667; a-xylerxe, cryst. Itich- temp. foim. SOXH; e-FACIMMe. cryd., 37,060; fetra- cr"t,, 30,370; m-xykne, cryit. high t-emp. forrq, Z6,778. In a Ifyca series of a type the 6peetra me dm9ar sad chalu-bmn~hfnx does not alter the central type af t1w. ap"tMat. 0. U. K"12DO - The Committee on Stalin Prizes (of the Councii. of Ministers TZSR) In the fielda or sclence and inventimw announces that the folloving ocientific worre, popj-lar acl.g-n- tific books, and textbooks have been zrabaitt-ed for competition for Stalin Prizes for the years 1952 and 1953. (SovetakaZa Kultum cyw go. ?2-4o, ?') Feb - 3 Apr 1954) , Most! Title of Work Davydov, A. S. Prikhot1ko, A. F. Obreimov, I. V. Research in the 1'ield of the spectrosco:ly of molecular crysta-Is NuainaZed b~ Academy of Science5, Ukrainian SSR SO: W-3o6o4, '17 juiy 1954 USSR/Physical Chemistry Molecule., Chemical Bond, B-4 Abst Journal: Referat Zhur - Khllmlya., No 1., 1957, 91 Author: Broude, V. L., and Prikhotlko, Institution: None Title: On the Paper-by McLure and Schnepp Original Periodical: Optika i spektroskopiya, 1956., Vol 1, No 1, 102-103 Abstract: The causes for the divergences between the data of McLure and Scbnepp (Referat Zhur - Khimiya, 1956, 60739) and A. F. Prikhotko i 'Zh. eks- perim. i teor. fiziki., 1949, Vol 19, 383) concerning the location of the absorption bands for a monocrystal of naphthalene. The authors have conducted analogous investigations on crystals of naphtha!,--ne and its deuterium-substituted derivatives and have found a substantial difference in the spectra of freely suspended crystals similar to those used by Prikhotlko from the spectra of crystals obtained by melting 2 quartz plates. The latter-spectra show considerably larger bands with a certain shift relative t6 the spectrum of free crystals Card ~/2 USSR/Physical Chemistry - Molecule, Chemical Bond, B-4 Abdt Journal: Referat Zhur - Khimiya, No 1, 1957, A 6 Abstract: in the IR region. Microphotographs of the spectrum of such a crystal are in full agreement with those published in the paper by McLure. The authors ascribe the changes in the spectrum to the great stresses produced during the cooling of the crystals by the ifference in the coefficients of expansion of the naphthalene (2-101 deg-1) and quartz (2-1o-7 deg-1). The interpretation of the electronic spectra of naphthalene must be carried out according to the spectrum of a free crystal or by making allowances for the distbrtions in the spectrum due to the action of exterior forces described above. Card 2/2 Category: USSR Physical Chemistry - Crystals Abs Jour: Referat Zhur-nimiya, No 9) 1957) 29723 Author : Broude V. L., Prikhot'ko A.F. Inst : not given Title : Investigation of Structural Changes in Crystals on the Basis of Their Spectra at Low Temperatures Orig Pub: Kristallografiya, 1956, 1, No 3, 334-341 Abstract: A study was made, in polarized light and at temperatures of 77 0 and 200K, of the absorption spectra of a number of molecular crystals of aromatic compounds (essentially hydrocarbons of benzene and naphtha- lene series). It is shown that the absorption spectra, the same as many other properties of the crystal (refraction index, coefficient of expansion, etc) fully depict lattice anisotropy. The changes ob- served in exiton bands of the crystal spectrum make it possible to identify crystalline modifications, and in some instances permit to evaluate lattice sy=ietry. In the spectra are also reflected the in- Card 1/2 -24- Category: USSR / Physical Chemistry - Crystals B-5 Abs Jour: Referat Zhur-Khimiya, No 9., 1957, 29723 clination of the molecule in relation to the crystallographical axes, the form of distribution of admixture within the crystal, photochemi- cal transformations which take place in the specimen, etc. Investiga- tion of crystals of different thiclmess, on a quartz base layer, has shown that the spectra are also affected by the effects of external influences. The paper demonstrates that low-temperature spectral inves- tigation of crystals can provide a valuable addition to roentgenographic nalyses. It is noted that correct evalu tion of the effect of crystal- line structure upon the spectrum can be had only in those instances when the investigations are carried Out in polarized light, with polari- zation along the axes of cauchy ellipsoid. Card 2/2 -25- BRODIM. M. S. JQWVRDW, V. CrYostats used tures- PrIb.i 'A Jamin interforomtry at liquid hvdrogen te era- ekh-OkSP-no.3: 96-98 N-D 156. '7 Is Ins"tut fizlki AN UISSR. (KLRA lo: 2 (Ilt,rfercq~try) (Cr. 24(7) ?) PHASE I BOOK EXPLOITATION SOV/1365 Lvov. Universytet Materialy X Vsesoyuz*rogo soveshchaniya po spektroskopii. t. 1: Molekulyarnaya (Papers of the 10th All-Union Conference or. Spo-~tros,.;opy. Vol. 1: Molecular Spectroscopy) [Llvov) Izd-vo Llvovskogo :Eaiv-ta, 1951'. 499 p. 4,000 copies printed. (Series: its: Fizychn-yy zbir-:Lyk,. vyp- g Agea,:;---: Akademiya nauk SSSR. Komissiya po Additional Sponsorln!; P spektroskopii. Ed.: aazer, S.L.: Ted'a. Ed.: Saranyuk, T.V.; Editorial Board: Landst-erg, G.S., Academician (Resp. Ed., Deceased), Neporent, B.S., Doctor of Physical and Mathematical Sciences, Fabelinskiy, I.L., Doctor of Physical and Mathematical Sciences, Yabylkamt-, V.A., Doctor of Physical and Mathematical Scli-ences, KornitsU:tv, V.G., CKnd:!da-'U---_ of Tee_-riical Sciences, Rays1dy, S.M., Candidate of Ph-ysical and Mat,hematicall Sciences, Klimovskiy, L.K., Candidate of Fhysft~~al am-id MathematlcaZl Sciences, Mil1yanclijik, V.S., Candidate of Physi,,,al and Mat",!iematica.2. Sciences, and Glauberman, A. Ye., Candidate of Phys:Laal and Mathematical Sciences. Card 1/30 3 Papers of the 10th, . ) sov/1365 PURPOSE: This of art,_4,1,_~es Is i-n-tended for scientists working in the field of spectroscopy and for engineers and laboratory ana'.1yste who use spectroscopic methods in their work. COVERAGE: This c~311ectlo-n of articles is concerned with theoretical, experimental, and tech:-Lical problems in molecular SDectroscopy. The applicat-ion, of molp_,~~7;21.ar spect-roscopy to various fields of theoretical researoh is described in articles covering chemical structure, kinstics, cat-alysis, theory of the chemical bondirg, properties of crys-.-als, effect cf radiation on substance, etc. Good coverage is :06o giver. to the use of spectroscopy in organic and ino--ganic te-11unology 'M-noluding the study of petro- chemicals (0 ,, polymers, glasa, phosphate. boron compounds, etc. Each article is followed by references. The text includes tables and figures. Card 2/a0 3 Papers of the -10th (Cont. SOV/1365 TABLE OF CONTENTS- Academician G.S. Ob.-Ituary 5 Academician G.S. Landsherg. Introdur;tory Speech at the 10th AII-Urzaon Co-nference on, Spectroscopy 7 Zavoyskiy, Ye. K., S. A. A-311-sh-uler, B.M. Kozyrev. Paramagnetic Resonanoe 13 Broude., V.L., V.S. Medvedev, and.A.F. PrIkhot1ko. Spectrography of Benzene Crystals at 20.40K 14 Brodin' M.S., and A.F. Prikhotlko. Absorption and Dispersion of fig-HE-E-i- Gerta:.Ln- mole ~=,I ar Crystals 16 Prikhotlko, A.F., and M.T. Shpak. Polarizat-ion of Abi6rptio--n-Bands of rmpuritles -4n Crystals 21 Card 3/0 BRcDjN. H.S.; ~RIKROTIKOj A.F. Absorption and scattering of light by various molecular crystals. Fiz . abor. no.3:16-21 '57. (MIRA 11: 8) 1. Institnt fi.ziki AN USSR. -spectra) (Anthracene FRTHOTIM,.A-.F.; SHPAK, M.T. Polarization of i ity absorption bands in crystals. Fiz. sbor. no-3:21-24 157. (MIRA 11:8) 1. Institut fiziki AN USM (lamineseence) (&sorption spectra) AUTHORS: Broude, V.L., Medvedev, V.S. and Prik-hot1ko-, A.-F. 51-3-6/21~ TITLE: Spectral investigation of benzene c .rystals at 20.40 K. 0 (SpektralInye issledovaniya kristallov benzole pri 20.4 K). PERIODICAL:110ptika i Spektrosko iya" (Optics and Spectroscopy), 1957, Vol.2, No.3, pp-317-322 (U.S.S.R.) - ABSTRACT: The present authors studied earlier (Zh. Eksper.Teor. Fiz., Vol.21, p.665, 1951 and Vol.22, p.605, 1952) benzene monocrystals in polarized light at the liquid nitrogen temperature. They found then that a purely electronic transition forbidden in the benzene molecule occurred in benzene crystals as a resolved doublet with its components polarized along the a and c axes of -the crystals. This doublet was shown by Davydov (Zh. Eksper. Teor. Fiz., Vol.21, p.671, 1951) to be due to formation of free excitons in the crystal. This paper deals with absorption spectra of benzene monocrystals at the liquid hydrogen tempera ure. The apparatus i luded a spectrograph with 2.9 i/mm dispersion at about 2600 T. An Iceland spar polarizer was used with a special diaphragm to make possible recording of two spectral Cardl/3 components simultaneously. Liquid benzene was poured into a special cell and held in a crycstat which permitted rotation of the cell. New samples coul(. be introduced during work. Spectral investigation of benzene crystals at 20.4 0K. Cont.) 51-3-6 2 Preliminary cooling was carried out wi h liquid nitro en and in the final cooling only 30-40 cm~ of liquid hydrogen were lost per hour. The absorption spectrum of benzene monocrystals at 20.4 K consists of more 'than 100 na row (2-4 cm7l) bands. The spectrum begins at 37800 cm-1 and the plates in the paper show bands up to about 41000 cm-1. The spectrum of the benzene crystal consists of two basic series: the K series strongly polarized bands which are related to the fully symmetric vibrations of the benezei~e molecule and the M series, more intense, whose beginning occurs when a purely electronic transition is combined with vibrations of E symmetry (523 cm-1). The K series occurs in crystals My and is called "crystalline", while the M series occurs also in gases and hence is called "molecular". The K series consists of six groups each of which contains 3 or more bands. The M series consists of four groups each of which has 3 main weakly polarized components and less intense satellites. There are also further bands w4ich a~j,itrongly polarized but Card 2/3 of low intensity, denoted by K-L whose components 1 are very close together (2 to 0 m Interpretation of the origin of these bands requires further work. Spectral investigation of benzene crystals at 20.4 K ~Y~c ,~nt. ) There are 2 line figures, 1 plate with spectra anli-ft 2 references, 6 of which are Slavic. SUBMITTED: August 23, 1956. ASSOCIATION: Institute of Physics, A.C. of Ukrainian SSR, Kiev. (Institut Fiziki Akademii Nauk tSSR 6. Kiev). AVAILABLE: Card 3/3 AUTHORS: Broude, V.L., Pakhomova, TITLE: Effect of deformations on (Vliyaniye deformatsiy na O.S. and Prikhotlrko, A.F. the spectra of crystals. spektry kristallov). PMIODICAL:"O-Ptika i Spektroskopiya" (Orptics and Spectroscopy), 1957, Vol.2, No-3, pp-323-329 (U.S.S.R.) ABSTRACT: Deals with the effect of planar tension on the absorption spectra of benzene, naphthalene, anthracene and CdS at the liquid hydrogen temperature (20.4 K). The sample were thin films held in a crystal holder. The assembly had a quartz lens for photographing spectra of various parts of the sample. The whole assembly was rotatable and was placed in a cryostat with quartz windows. The spectra. were obtained with a quarAz spectrograph whose dispersion was 2.9 X/mm at about 2600 A. To study the CdS spectra glass optical parts were used. An Iceland spar polarizer made it possible to obtain simultaneously spectra for two mutually. perpendicular directions of the electric veator vibrations. A krypton lamp was used as a source and the iron spectrum for cali- bration. Naphthalene crystalline films rigidly fixed Card 1/3 between two quartz plates behaved differently for differe'rat thicknesses of the film. Above 2-3 ~L thickness these films cracked on cooling to 20.4 K. Thinner films exhibited Effect of deformations on the sDectra of crystals. (Copt.) 51-3;7&4 spectral displacement towards ulturaviolet when compa with freely supported samples. This spectral displacement was accompanied by widening and weakening of bands and strong polarization of the originally weakly polarized "molecular" M bands (see the preceding paper). If the films were very thin (0.01 ~i) only the spectral displacement occurred. Similar behaviour with strongly developed polarization effects was observed for anthracene films. Benzene films also behaved essentially in the same way as naphthalene but both the spectral displacement and polarization effects occurrbd only in thin (0.2 - 0.5 -~') films. In CdS displace- ment and intensity redistribution of absorption lines occ'urrea for crystals under tension. The exDlanation of these effects lies in the large difference of linear herma expansion coefficients of the quartz h Iders (2 x 10 deg- and of the organic crystals (1-2 x 102~ deg-1). Cooling to 20.4 K from room temperature produced an extension of 5% in the rigidly held crystal films. In thicker films the ex- tension is non-uniform across the 5amDle thickness being Card 2/3 largest at the planes of cont;-ct with the quartz plates. This non-uniformity which pro,.uces lattice distortions, accounts for the displacement, weakening and widening of 51-5-7/24 Effect of deformations on the spectra of crystals. (Cont-.) spectra of the thicker films. The thinnest films are thir, enough to be extended practically uniformly -throughout their volume; in this case only the spectral displacement occurs. Polarization of the "molecular" M bands (whose excitation is normally localized in the molecules) is due to formation of free excitons in non-uniformly stressed samples., The actual mechanism is not clear and needs further study. The peculiarities of benzene are attributed to its transitions to a doubly degenerate level (absorption bands). There are 2 plates with spectra of naphthalene and Card 3/3 anthracene, 2 line figures and 12 references, 11 of ahich are Slavic. SUBMITTED: August 23, 1956. ASSOCIATION: Institute of Physics, Ac.Sc. of the Ukrainian SSR,Kiev. (Institut Fiziki Akademii Nauk USSR g. Kiev). AVAILABLE: AUMORS: Brodin, M.S. and Prikhot,ko A.F. 51-4-7/25 TITLE: Dispersion and abso-ii~~_~oi_h_~~71-n anthracene crystals at 20.40K. (Dispersiya i pogloshcheniye sveta v kristallakh antratsena pri 20.40K). PERIODICAL: "0;)tika i Spektroskopiyall (Optics and SDectroscopy) 1957, Vol.2, No.4, pp.448-453 (U-S-S-R-) ABSTRACT: Colourless anthracene crystals s rongly absorb in the near ultraviolet at 24500-29000 cm-i (first electron- vibration transition in the crystal) and also at 37000-42500 cm-1 (second transition). This paper reports on the refractive index dispersion and the absorption co- efficients of anthracene crystals at 20.40K at 25000-37000 cm-1 for two directions of the light vector: parallel and perpendicular to the monoclinic crystal axis. To study the dispersion a small Jamin interferometer was crossed by a spectrograph. The method is due to I.V.Obreimov (Jubilee collection of papers on the 70th birthday of Acad. A.F.Ioffe, p.523, 1950 - in Russian). Spectrograms were obtained with and without a crystal in the light beam. The absorption was measured with the cooperation of S.Z.Shullga (see also Zavodskoya laboratoriya, current number in print). A photo- multiplier FEY-18 was used. For the dispersion and absorp- Card 1/3 tion. measurements a quartz spectrograph of medium dispersion 51-4-7/25 Dispersion and absorption of light in anthracene crystals at 20.40K. (Cont.) ' was used' Low-pressure hydrogen lamps were used as light sources. Glan-Thompson prisms viere used as polarizers. The iron are spectrum was used as wavelength standard. The acduracy of measurement of the refractive index was about 2% and of the absorption coefficient 8-10%. The results are given in four graphs. The refractive index at 20 40K oscillates strongly (from 1 to 6) at 25000-28000 cm-,; its value outside this regon is 1.5-2. The absorption coeffici- ents (values up to 0. 0) are shown for both 2940K and 20.40K; oscillations here occur.at 25 000 - 29 000 cm- . From the absorption coefficieats and the refractive index the reflec- tivity curves (values up to 0.50) are constructed; again oscillations occur at 25 000 - 29 000 cm-1. In all graphs the largest maxima occur at about 25 000 cm-1. The oscillator strengths of electron-vibration transitions were calculated to be for the three directions:(a) parallel to the monoclinic axis, (b) perpendicular to that axis and (c) at right angles Card 2/3 51-4-7Z25 Dispersion and absorption of light in anthracene crystals at 20.40K. (Cont.) to (a) and (b). Th& values were found to be: (a) 0.12, (b) 0.05 and (a) 0.13. There are six figures (including one half-tone plate), and nine references, seven of which are Slavic. ASSOCIATION: Institute of Physics, Academy of Sciences of the Ukrainian S.S.R., Kiev. (Institut Fiziki All USSR, Kiev). SUBMITTED: August..18, 1956.. AVAILABLE; Library of Congress Card 3/3 .tA. 14A 6 ~j 0 6 0.n4A -00 0 cA.0 4) -1 VA .,A I k> ,Ao 0 ,?4A .,A Asol CA VA V. C) J? 'A (D 0 CA PA A (?A C_) 110 0 CE) "W rA, 4). tp A a) SA 0 fA x 0 3~ % 0 05 '~ g 0 0 A 0 $A P va 'A -irk -A ,A tp dl tp VA 0 " q I? ,A ~~o v-6QA .0 0 rA 6 (L) 'VA VA 00A 0" 0 CA j rA )? ,A 0 CA. ;cA A0.0 IA 0 ~3 ~A 9-4 -,, e " (D IIA 0rA A. lg~,rA t~ -A CA CO 0,~ CD 000 00 S5)X A %a " C'l 0)00 0 ~A 0 oV,, ta -A 0 0 PA a) C6 0 9A ~A ,A d5 (A V- . A A C) p , ~A 0 A0 W.,A A' Os V,~ jr, J?o, V, d:) 0 9-4 0 o en W0 Os, CA CkA p A'D 0 -A CtA 0 0)0 0 ~3 SA SA. 51 AUTHOR: Prikhotko, A',"F',- TITLE:A Study of Spectra of Molecular Crystals at Low Temperatures (Issledovaniya spektrov molekalyarnykh kristallov pri niakikh temperaturakh) PERIODICAL: Opt'ka i Spektroskopiya, 1957, Vol.III, Nr 5, pp.434- 452 (USSR) ABSTRACT: Systematic work on the spectuscopy of molecular crystals was begun in the USSR by I.f.Obreimov in the late twenties. He showed that at liquid helium temperat-1.,,res the absorption spectrum of azobenzene is of the line type. It can be rep- resented by a series of electron-vibrational transitions from a normal state to an excited state. Results of studies of spectra of molecular crystals, which. are a continuation of the wo 'rk of Obreimov at the Physi co -Technical Institute of the Ac.Sc, of the Ukrainian -S.SR are reported in this paper. 1'. Experimental. Vie majority of organic compounds crysta- 114se into molectilar lattices and most of the work at the above Institute was done on such crystals. The method of obtaining such crystals has been described in Refs. (33), (38) and (23)~. The crystals are often in the form of thin Card 116, 51-5-3/11 Study of Spectra of Molecular Crystals at Low Temperatures. plates (a few hundredths of a micron to a few microns thick). Larger specimens are obtained by cleaving large monocrystals. Substances which are liquid at room temperatures are crystall- ised directly in a cryostat by slow cooling of the container in which the substance is placed, by liquid nitrogen or its vapour (Ref.21). Substances which are gaseous at room tem- peratures are first compressed into quartz containers and then crystalised by Slow cooling with liquid nitrogen or hydrogen (Refs.41, 43-45 and 54~. In this way more or less perfect monocrystals are obtained and their spectra are studied at liquid helium and liquid hydro en temperatures. Metallic cryostats are used (Aefs-130-1M, one of which is shown in Fig.l. The c:r7ostat has three pairs of windows so that it is possible to photograph absorption and luminescence spectra of any given crystal without moving it. Full det- ails of the various auxiliary apparata are given in Refs.(19) and (130) to (136). 2. Absorption of light bv molecular ervstals. When the temperat~dr~e of crystals is lowered various chan~;es in the abs)rgt'Qn spqctra are,jb erved. Changeasbo V have beeno ubject d to deta ea study t et ULnsst'i P at h1d 0 Me. Card ~/6 For example, E.I.Rashba has worked on the theory of strong 51-5-3/11 Study of Spectra of Molecular Crystals at Low Temperatures. interactions between electron excitations and lattice vibrations in molecular crystals (Refs'.1-5)t and the inter- action of excitons with molecular lattices (Refs.127). Rad- ical changes in absorption spectra in going from the gaseous to the crystal phases have been observed by M.D,Borisov (Ref"2), M-S.Brodin (Ref.5) and A.F.Prikhot,ko (Refs.1,4,5). A coj;~ider~ble amount of other work has also been done in this field and a complete list of references is given. 3. Luminescence of molecular crystals. Luminescence spectra of napthalene, anthracene and other crystals have been in- vestigated at liquid hydrogen temperatures (Refs.37, 39 and 40). Strong luminescence of these molecules is observed when they are introduced as an impurity into other lattices. They have a practically line luminescence spectrum (Refs.3, 56-58 and 128). The number of levels, their symmetry, pol- arisation and the selection rules have been obtained using group theory (Refs*.67, 77, 98, 101 and 103). "Energy mi ration"-was studied by A'.N.Faydysh and others (Refs.63, gEf 92-100). Card 3/6 51-5-3/11 ystals at Low Temperatures. Study of Spectra of Molecular Cv 4'. DisZersion of li&ht in crystals. Determination of cillator streng1lis. The optical behaviour or -crystals is rmined by 3 quantities: coefficients of absorption, reflection and refraction and their dependence on wave length. Two of these are independent and if they are known the third may be found from the well-known formulae of crystal optics. The absorption and dispersion curves and the crystal spectra change when the crystals are cooled. Wide absorption maxima split into series of narrower maxima. The rise of absorption curves towards the absorption bands becomes much steeper and the coefficients of refraction in- crease rapidly in this region. Small maxima in these curves become more pronounced, as can be seen in Fig.121 where the dispersion curves of diphenyl crystals are given at 200K (Refs.1, 29 61 8, 9, 36-38, 61, 65 and 66). Fig'.13 shows dispersion curves for anthrace'ne crystals at the same tem- pqrature. The rapid rise in the dispersion curve of the b-component is due to a strongly polarised band which begins the absorption series (Refs.1, ?, 6, 8, 99 36-38, 61, 65 and 66). The theory of dispersion is developed in Refs.73-76, 819 86 and 1447. Integral formulae have been obtained for Card 4/,the -calculation of dispersion curves of crystals which give 51-5-3/11 Study of Spectra of Molecular Crystals at Low Temperatures. ood agreement with experimental data (Refs-.9 and 144). ues for the oscillator strengths have been obtained for M a number of aromatic h drocarbons (Table 1; Refs.1, 2, 5-9, 61, 65~ 66, 138 and 14~. It was shown that the first trans- itions in all condensed aromatic compounds are polarised along the mean axis of molecules. Oscillator strengths in- crease with the number ofrt-electrons. A similar situation occurs in the case of crystals of other polycylic hydro- carbons. 5. Conclusion. Studies of spectral and optical properties of molecular crystals at low temperatures (both experimental and theoretical) have led to information on the energy levels, optical characteristics and the mechanism of the various phenomena occurring at low temperatures. From a knowledge of the main regularities in the spectra, it was possible to establish a connection between structural changes in crystals and their electron spectratand between changes in these spectra and the elastic deformations of crystals. The role of lattice defects,particularly important in lum- Card 5/6 inescence spectra, has been elucidated. Studies of solid 51-5-3/11 Ptudy of Spectra of Molecular Crystals at Low Temperatures. solutions of aromatic hydrocarbons h,&ve expanded the know- ledge of spectra of complex molecules. There are 16 figures, 1 table and a comprehensive list of 147 Slavic references (including full titles) is given under the title "Work on the Spectroscopy and Crystal Optics carried out at the Ac- ademy of Sciences of the Ukrainian SSR". The reference list is subdivided into the following sections: 1. Experimental papers - Refs'.1 66.. 2.. Theoretical papers - Refs.67 129. 3'. Apparatus - Refs.130 - 136- 4. Dissertations - Refs-137- 147. ASSOCIATION: Pbysics Institute of the Ac'.3c. of t'-ie Ukrainian SSR, Kiev (Institut Fiziki AN USSR, Kiyev) SUBMITTED: June 289 1957'. AVAILABLE: Library of Congress. Card 6/6 BRODIN, M.d.; PRIKHOTIKO, A.F. [Prykhottko, A.F.] 'Vr A boorp O"n"%%*MV4rnion of light in certain crystals of tha polycyclic series [In Ul=ainian with sumrwy in English]. Uvx. fis. zhtL-. 3 no.1:79-87 JA-F 158. WRA 11:4) 1.Institut fizik-i URSR. (Stilbene--Optical roperties) (Acetylene--Opticai~ BROUDS, V.L.; YEREMENKO, V.V. [IEramenko, V.V.1; IIEDVEDKV, V.S.; PAKHOMOVA, O.S.; PRIKHOTIKO, A.F. 4-z-.1-:7--- ~ 1: -'- Effect of deformations on the electron spectra of crystals [in Ukrainian with summary in English]. Ukr. fiz. zhur. 3 no.2:232-238 Mr-Ap 158. (MIRA 11:6) I.Institut fiziki URSR. (Crystals--Spectra) (High pressure research) 51- 4' A.UTHORS: Prikhot I ko, A. and Shpak, TITLE: S-i 1-3er~~ Absorption and Luainescence L ta- n ' lyu-min- Dibenzyl Crystals at 20.hrOK. (Pogloshc'qerjiye i estsentsiya stillbena kak primesi v kristualla1d, dibenzila pri 20.40K.) PERIODICAL: Optika i Spektroskopiya, 1958, Vol.IV, Nr.l, - P.O.!?-29. (USSR) ABSTIMT: The absorption bands of strongly absorbiriG cx-jstalf~ (e.g. stilbene and tolane) are still comparati-r-aly wide at liquid-hydrogen temperatures. VFhen the absorb- ing molecules are separated by molecules of a foreign lattice (e.6. stilbene as an impurity in a dibenzy! crystal) the absorption bands of the impurity are sufficiently narrow to be called lines- Cr~ystals with such impurities usually luminesce. The present paper deals with absorption and luminescence of stilbene in Card 1/? dibunzyl ci-j.-tals. The res,.ilts were ob. ned using a 51- ur --.1-3 r*26 Absorption and Luminescence of Stilbene In-ouritj 'n, Dibe!-.z-11 Crystals aju-- 20.4":K- Hilger c.~iartz spect-roGraph of hiF~n dispersive power. The absorption spez~t-ra were photoGrapned in Dolarizea 1 i ght- .The cell .,jith-the crystal 1.-ias conclied r,.-, the hydrojn~n, A hyd-rc6en or a temperature of lio ki-jpton lamp was used as a sour,,7~e, and a-,--, a:r,:~ spectrum between iron elef,,tiodes was used for calibration. The L crystal thicknesses in -absorption stadies- wer-e froii several hundredths of a micron to 160 ~L. The s',--lbene content was from about. 0.001I.-S t-o b-Y we---gh.-,. S-D e C. ~L To srudy luminescent I'm ci-jst-alline platc-s of I m- 1 -L thickness were us(;-:cI- lphcse specUra we-re obtl-,~Llled 'rom the same surface of the crystal onto wi-ii-Ch th-7 exr;i1tuin liGht fell. Luminescence was excilu-ed b,", rrioans oif a, Card 2/? mercury lamp. Crystals of dibenzyl p(~sses-s intrinsi3 51- L-3/26 Absorption and iki-ainescence ofIC In Dit,-enzyl Crystals at 20.40K. absorption in t'ho region of 3'1000 (,vi VIDich of a larE;e number of narrow bands and lines, Oom,~ of 4ty which are strangly polarized. The stilbene impur-L i. begins to absorb light frora about 29500 cm- FiF'. 1 shows t;fie absorption spectra of dibenzyl faoncci~~,rstals 160 ~t tLick with O.OLV; of st-ilbene (Fig.la), L -thick vzi-th 5cl of L;Lilbene (Yig.11)) and 2 ~L -u-Iich with 5cl,, stilbene, (FiF,._Iv). Ali regults i.-I this fiSure and subsequentfie7ares and tables are quoted in cl~-I. Table 1 shows the ruouli~-s of moasu.L-L~m,,~nt.~ or) a 160 ~L thicIs- d2benzyl crystal with about O,OLV of stilbene The -first column Sives relative Card 3/? intensities obtualined visuall--. _"h_, ~,ecoEd colulam d 53-- 4-1-3/26 Absor r i t 7 --, n L'i IJIL- e n 7, y 1 ption and Lur:inE;sce-,.~co Of Impu I OK' Crystals at 20.4 gives frequencies in cm- measi).rcd with 1-2 ca- precision for narrow liae2, 3-5 cm-1 �'cr narrow bands and 1.0-15