SCIENTIFIC ABSTRACT ANDRONIK, I. K. - ANDRONIKASHVILI, E. L.
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CIA-RDP86-00513R000101420018-4
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S
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Document Release Date:
March 20, 2001
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Publication Date:
December 31, 1967
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SCIENCEAB
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Body:
2~ Cq4
6/101/61/UU3/Ojq/UO6/03q
Electrical properties of... B102/BlO4
(C. S. Hung. Phya. Hev. 79, 727, 1950). An accurate analysis of data
obtained allows the foll;-wing conclusions to be reached: (1) ;, narrow
acceptor band, lying O-UU5 - 0.008 ev above the fundamental band, is
formed in CdSe single crystals with a defect concentration c;f 3.1015cm
(2) The hole mobility in the fundamental band is about 30OU timen as high
as in the impurity band. (3) The hole mobility in the fundamental band
0
increases as temperature drops to 20 K approxim~itely as
indicates that t.,,e hole8 are scatteled by thermal (Z~Coustic) latt4~ce
vibrations. (4) 13 4.2 11, the Hall constant and Aq/q i-' drop with a rine
of II, crofennor D. 11. Nasledov is thankod for holi) all(I J11tol-o.,it
difII)layed, There tire 6 fi,,,urec and -) referuncen'. 4 ;Oviet ind 1 non-Soviot.
1~,6~;uCIATION: Kishinevnkiy gosudarstvennyy universitet (Kiciallev State
University)
SU-111,"ITTED: February 11.), 1I,)CI
L IOV-63 --EWT(1)/Etd M Wp(q)/BDS/EEC(b)-4--AFFTC/ASD/ESD-3--
;MCL1IWIJR AR3000373. -B/0058/63/000/004/EO64/EO64
wmm: M. FiziUa., Abs'. 4E433
A=CR-. Andronik, 1. Y,. Kot, M. V. Shcherban. D. 'A.
TIM: Electric properties of siniLe cryatAls of cadmium antimonate doped with
itTurities r
CMM- sa=: Tr. -po fiz., poluprovodnikov. Kishinevsk. un-t,,. yyp~ 1, 1962, 3746
TOPIC TAW: semiconductors,, doped cadmium antimonate, single crystals, electric
properties''.
TRANSIATIOM. Cd9b crystals ,doped-with'Upwities of groups Three, Fourp and
Six (In., Vbj and Te) Vere investigated. 'The temperature dependences of the
specific conductivity, the differential thermal emf and of the Hall effect vere
measured in different crystallogmPhic directions. Assuming that at temperatures
above 20* K the mechanism, of scattering by phmons is effective, the formula
In Sigm f (I/P) was used to calculate the value of the fcwbidden band, 0.57 ev.
6rd 1/2
L 10073-6Z
ACCESSICK.M., AR3000373-
The values of the effective Masses of the electrons and holes, determinedfrom
the data onthe Hall effect and.'the therml emf using the Pissrenko forimila. are
respectively, m* sub n a 0. 6-", 0. 7 m sub 0, Ta* sula p a 0. 4 -- 0. 5 m sub 0. From
measurements mde at beliumtenperatures'it'is concluded that the impurities Pb,
In,'and Te bind theacceptors chemically. This leads to the occurrence of
uncompensated acceptor levels*in place of the impurity band,, owing to the reduction's
Intbe acceptor:concentration.,- da the basis of the experiwntal data (decrease in
mobility In doped-crystals; Idouble reversal of the siga of the components of the
Hall and thermal emf tensors. In the crystallographic directions of a and b, and
single inversion in the directi6n'c) it is shown that the energy structure of the
bands In CdSb should be,complex.,.It is suggested that the valence band consists
of two bands. V. Curevich
DATE ACQ: 14MELY63 ENCL: 00 SUB COM: PH
Card 2/2
Temperature dependence of the mobility,of current carriers in cryst&JV
of cadmium antimonide. I. K. Andronikp H. V. X~t--'
Temperature dependence of the mobility of current carriers in crystalS
of zinc antimonide. M. V. Kot, 1. V. Kratzu.
Electrical properties of crystals of antimony sesquiselenide.
M. V. Kot~ S, 0. $hutovo. (Presented by M. V. Kot--20 minutes).
Report Presented at Ve 3rd National Conference on SemicOndXtor Compoundsp
Kishinev, 16-21 Sept 1963
ANDRONIK, I.K.; KOT, M.V.; SHCHERBANP DoA,
Electric properties of oingle-crystal cadmium antimonide with
various admixtures. Trudy po fize poluprov. no.ls37-46 162*
(MIRA 16til)
-ACCESSION NR: AP4041370 5/0048/64/028/006/1028/1032
[iAU711OR: Andronik, I*K.*, Kot, M.V.
uro dependence of current carrier mobility in cadmium antimoni o
TITLE- Tomparat
crystals goporti Third Conference on Semiconductor Compounds hold in Kkshinov 16
to 21 Sop 196~37
SOURCE: AN SSSR. Izvesti~a. Seriya fizicheskaya, v.28, no.6, 1964, 1098-1032
TOPIC TAGSi semiconductor property, electric conductivity, carrier'mobility, Hall
-effect, thermal effect, Nornst-Ettinghausen effect, cadmium inorguftic compound
ABSTRACT:* The three indepondent components oftho conductivity tenser, the Hall 11
tenser, the thermal omf, and'the tonsor describing the transverse Nernst-Ettinghau-'
ison effect wore measured at a number of temperatures for both p- and n-typo CdSb
i;single crystals. The measurements wore undorta%en partly because of the discordant
!data in the literature concerning the temperature dependence of the electron and
:,holo mobilities. The n-typo CdSb crystals were obtained by doping with To. The con-
,:ductivity and the Hall.,effect were found to be markedly anisotropio in both the Im-'
u
rity and the intrinsic conduction regions, but the thermal eMf was anisotropic
P
1,.,,Cor4
ANDRCNIKpM*, inz,; BMARDp L. Inz,
Classification of parts.. a way of improving the automobile
spare part produotion. Automobil.Cs 8 no.8t2O Ag'64
VASILIYEVA, N.G., dotsent; ANDRONIK, N.D., ispolnyayuahchly obyazannoBti
assistenta; KALINIK, k-.A., ordinator
Osteosynthesis in fractures of the mandible using periosteal
plexigals plates. Trudy Nauch.-isnl,inst.atom. no.10s63-71 162.
(MIM 15t10)
(JAWS-FRACTURE) (PLASTICS IN MICINE)
ANDRONIKASHVILI. B.Ge
Studying the nature of the growth of early and late forms of
the oak Quercus longipw Stev. and also chemical,, physical and
mechanical characteristics of its wood. Vest.Bot.sada All Gruz.M.
no.67:35-54 161. (MM 15:7)
(Gardabani District-Oak)
L 12774-66 EW-T(I)LEM(m)/EPF(n)-2,/T/EWP(t)/Ee(b)Av'A(h) IJPW JD/466
ACC NRt AT600316o SOURCE CODE: LM/3182/64/001/000/0013/0030
S , I el
UT
A
HORi Androni ashvili Is L.; Politov.
0.- Voroz ey inti, L. F.; A
M. 0
ORG: none--
i
TITLE- Influence of defects of the structure on the mechanical properties of crystale
SOURCE: AN GruzSSR. Inatitut fiziki.. -Elektronnyye i ionnyye.prottessy Y.tverdqkh7-.-
telakh v. 1, 1964, 11-.3T.
~TOPIC TAGS: crystal defect,'ionic, crystal, xray irradiation', gamma irradiation,
neutron irradiation
ABSTRACT: An investigation.vas.-made of the effect of ind rradia
.irradiation esA of Rq~ ~ssijm',AhlorideVW
tand n"eutron flux crystals at In a,reactor on the bardn
lithium fluoride room and-liqui nitrogen temperatures. Microhardness
-H,,.bardnese-to.scratchitig,H', and iccording to the attenuation of pendulum
oscillations H were establi:hed by measurements on the surfaces of specimens cut
. p
from a single crystal ingot. 'The'optical absorption spectra were also measured. The
formation of point defects such as electron F-centers due to x-ray irradiation reduced
the Hm, Hsi and Hp of KCI ciTetals. Prolonged irradiation may result'in increased Hp
Discoloration of crystals reetored.H'. In LiF crystals irradiated with x- and gamma-'
rays H and ff. increasea, despite the formation of.F-centers, while Hm changed only
p
1/2
La -rd
ACC NRe AT6003161 GOVRCS CODE I UR/3182/64/b6l/000/0031/0041
~AUTH012 Androniksa Vill, 1. DO; Politovi NS, G.; catils H. Sh.
-ORG: none
TITLE: -R.adiative changes of dislocation densities in ionic cgetals
SOURCE: A14 GruzSSR. Institut fISAL Slektronnyye i ionnyye protsessy v tvardykh
telakh ;Z-1 l904, Al-41
TOPIC TAM, irradiationg neutron''irradiation, irradiation effect, crystal ~-P',2-adb
dislocation
ABSTRACTz An investigatioii,was made of the influence of~neutron irradiation in
a reactor on the density of the-dialocations.-'in.potassium-chloride and lithium-.
fluoride'crystals. The.dialocattons were developed by chemical etching. .,Two
halves of thesame crystal, one-half irradiated and the. other half kept as a
controli were investigated. 'Both halves were etched simultaneously and both
surfaces were Icompared. At am all irradiation doses, no changes in microstructure.
were found. At doses above 3 x 1015 nvt, the microphotos of both the irradiated
and nonirradiated halves began'to differ appreciably. On the surface of the
irradiated crystal a radiative strengthening took place. The etched figures on
the.irradiated surface were considerably smaller than those on the nonirradiated
surface. By increasing the etching-time of an irradiated crystal itwas possible
to bring the dimensions of the etched figures up to the "normal" size, Le.i up to
Card 1 / 2
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12he Development of the Soiancea of Ultraviscositv and
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szkvl1i, X. A. Twancrv, 63 PP
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part, describing properties of Reltum-II, dIscovw7 of
m1traviscosity, reversibility of acme thermohydroAy-
nmic processes of He-II and quantum theory of ultra-
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supwoonduotance, including suparconductan a of tJLU
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films and penetration depth of material being am-
ftated, and obanges of limits of superconductivity
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"Problem of Heat Trawmission. in He II, X. L. An-
dronikashvili, Inst of Phys Problems) Acad Sci USSR
"Zhur Rksper i Teoret Fiz" Vol =, No 6, PP 535-42
Anal_vzes results of measurements of subject trans-
mission of heat in He II. Defines limits of appli-'
cability of Landau's theory to this phenomenon and
to that of the motion of the normal component.
Submitted 26 Feb 49.'
170T104
ACC NR, AF014023 SOURCE CODE: Uv/0056/66/050/004/0856/0860~
'j
AUTHOR. Andronikashvilil--Z. L.. Gamtsemlidze, G. A.; Dzhaparidze, Sh. A.
~ORG: Tbilfi& S't''a'te Universiti (Thilisskiy gosudarstveruvy universitei)
TITLE: Study of the character of oscillations of helium 1I near the a f f*
oscillating disc by the resonance method
SOURCE: Zhurnal eksperimentallnoy i teoreticheskoy fiziki, v. 50, no. 4, 1966,
856-860
TOPIC TAGS. liquid helium, quantum liquid, vortex, superfluidity, cunve- iKorrA5A71*A)
ABSTRACT: The purpose of the investigation was to deterAne the depth of penetration
of the supercritical (vortical) oscillation produced in e II in which a disc oscil-
lates with amplitude above a critical value, and caused by formation of quantum vor-
tex filaments. To determine the penetration and to study the character of the pro-
pagation of the waves generated by the disc in this region, the authors used a spe-
cial setup permitting measurement of the oscillations by reflecting a beam of light
from a suspended mirror. The tests show that at amplitudes below critical, the depth
of penetration agrees with the value obtained for a viscous wave., but at supercriticeJ.
amplitudes the depth of penetration decreases with increasing amplitude. In the sub-
critical mode, the depth was 0.48 � 0.02 mm, and in the supercritical mode the values~_
obtained were 0.33 -1 0.01, 0.36 � 0.01, and 0.40 � 0.01 mm at amplitudes Of 0-73,
0.61, and 0.44 radians, respectively. The tempeiature dependence of the depths of
2
Card
1. ANDRON11CINVILT, Ye. L.
2. USSR (600)
4- Quantum Theory
7. Experimental basis of quantum hydrodynamics, Soob. AN Gruz. SSR 12, No. 9, 1951.
9. Monthly List of Russian Accessions, Libriry of Congress, May -1953. Unclassified.
Effect of the compactness of dislocation on the process of creep. Soob.
-AN GruLz.SSR 13 no.8:457-462 652. NLRA 6:5
1. Thiliaskiy GOBudarstvennyy Universitet imeni Stalina (for Mpbryuu).
2. Akademiya Hank Grazinskoy SSR (for Andronikashvili).
(Creep of metals)
ANDItONIKOSHVILI, E9 Le
USSR/Physics Helium 11 Jan 52
"Certain Problems of the Hydrodynamics of Helium
111" 3. L. Andronikoshvili, Inst of Phys Problems,
Acad Sci USSR; Inst of Phys, Acad Sci Georgian
SSR
"Zhur Eksper i Teoret Fi;" Vol XXIINo 1, pp 62-65
Clarifies the problem concerning the possibility
of the existence of nondamping circular currents
in helium II~ Shovs-that under the conditions of
the present expts such currents of superfluid
liquids do not occur. Submitted 3 Apr 51.
ANIBONIKASHVILI, I.L.; BILILASHVILI, M.Y.; SARYAMIDZE. I.I.; EffMISKMI,G.R.
Underground Investigation of cosmic rays. Izv. AN SSSR.Ser.fiz.19 no*6t
681-686 N-D 155. (MM 9:4)
LInstitut fisiki Akademii nauk Gruz.SSR.
(Cosmic rays) (Nuclear physics)
------ FD--1901-
Card 1/1 Pub. 146-21/21
Author Andronikashvili, E. L., and Kaverkin, I. P.
Title : Rotation of helium II at great speeds
Periodical : Zhur. eksp. i teor. fiz. 28, 126-127, January 1955
Abstract : The attempts to verify experimentally the theoretical depth of the
parabolic meniscus formed by rotating helium II. He presents the de-
pendence of the magnitude of thermomechanical effect upon the speed of
rotation at various temperatures. He concludes that in the transition
through the criticnl speed the phenomenon of superfluidity not only does
not disappear, but the quantitative characteristics (e.g. thermomechani-
cal effect and the associated quantity of density ratio) remain unchanged
and independent of the speed of rotation. Three references: e.g. E. L.
Andronikashvili, Dissertation, Institute of Physical Problems,Academy
of Sciences USSR,, Moscow, 1948 (in which the experimental apparatus is
described).
Institution: Institute of Physical Problems, Academy of Sciences USSR
Institute of Physics, Academy of Sciences, Georgian SSR
Submitted ; June 24, 1954
USSR/Physics Helium II FD-2912
Card 1/1 Pub. 146 12/19
Author Andronikashvili, E. L.; Mirskaya, G. G.
Title Behavior of helium II close to heat dispersing surfaces
Periodical Zhur. eksp. i teor. fiz., 29, October 1955, 49o-494
Abstract The authors investigate'the magnitudes of the temperature disconti-
nuities that occur in the surface layer of helium II bounded by a
solid wall to which heat is being conducted. They show that under
these conditions a remarkable heat resistance occurs in the thin
layer of helium II. They find the dependence of temperature drop
upon load, which turns out to be linear only for small loads, and
that the thermal resistance close to the heat radiating surface de-
creases noticeably with increase in pressures. They establish that
close to the heat radiating surface in helium II the existence of
superheatings which reach 10 is possible. Six references: e.g.
I. M. Khalatnikov, ibid., 22, 687, 1952; E. L. Andronikashvili,.
ibid., 19, 535, 1949.
Institution : Institute of Physics) Academy of Sciences of Georgian SSR
Institute of Physical Problems, Academy of Sciences of USSR
Submitted- : June 5, 1954
I t-n
SUBJECT USSR / PHYSICS CARD 1 / 2 PA - 1297
AUTHOR 9ACHULOV,O.A., KEBULADZE,N.A., ANDRONIKA�VILI,E.L.,ABA9IDZE, K.A.
TITIX A New Type of Decay of a Heavy Meson ?
PERIODICAL Lrn.eksp.i teor.fiB, L1, fasc.1p 167-168 (1956)
Publ- 7 / 1956 reviewed 9 / 1956
In the summer of 1955 1-1. GUREVICY and his collaborators exposed an emulsion
chamber with 45 layers of a photoemulsion of 400/4#-thickness of the type P in
a height of from 25 to 27 km. The emulsion chamber remained in this altitude
for 2 hours. Hereafter the emulsion chamber was placed at the disposal of the
authors who found the following three cases after a microscopic examination:
1.) A charged particle of unknown mass has a range of 2000,A- in the emulsionj
it then comes to a standstill and decays into a positive pion with a trace of
365/-,'- length. The positive pion in turn decays into a positive myon with a
trace length of 630,LL , and the latter decays into a positron. The entire se-
quenoe of decays takes place in the plane of a photo emulsion. 2.) A charged
particle of unknown mass is ejected from a star with 4 black and 3 relativistic
tracesi after 5600 /1 it comes to a standstill and decays into a negative pion
which then forms a 6-star. The decay sequence is in the plane of a photo emul-
sion- 3.) A charged particle of unknown mass comes to a standstill after
6500t- and decays into a positive pion. This act of decay and the following ones
(x+--> 1A -~positron) are in thri plane of a photo layer. All three cases have
the existence of a pion trace with 357,4- + 2% in common. As all these pions are
monochromatic, the + particle of unk -xn mass most probably decays according to
1. 7 J
S.:
A
la &.4
IL .4:3
09, IMP
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0
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10
'AUTHOR ANDRONI)WHVILI,, E.L., BIBILASHVILI, M.F., PA - 2712
TITLE The Spatial D1str tion of the Hard Components of the Broad
Atmosplieric Showers.
(0 prostranstvennom raspredelonii pronikayushchey komponenty shiro-
kikh atmoefernvkh 3ivey, Russian)
FMIODICAL Zhurnal Eksperim.i Teoret.Fiziki,1957,Vol 32, Nr 2,pp 403-404 (U63*36H.)
Received 5/1957 Reviewed 6/1957
ABSTRACT The authors investigated this spatial distribution in an altitude of
4oo m above sea level in a tunnel situated 26)6m below the surface of the
earth (65,5 m water equivalent). The density of the hard particles was
measured at distances of O,lo, 2o, 3o, 45 and 6o m from the spmetry a-
xis of the separating system and the showers were separated by means of
a tube selector. In addition, the measuring device contained correlated
hodoscopic systems for the determination of the total numbers of the par-
ticles and the location of the transition of the trunk of the broad at-
mospheric showeras well as a subterranean one for recording the partic-
les of the hard components. The showers were recorded ~y means of a ci-
nematographic apparatus. Showers with from lo5 to 5-lo5 particles were
recorded best. The data determined in the course of 2156 working hours
of this device are shown in a table. The experimentdl data obtained in
this way are 'approximated satisfactorily within the statistical limits
of errors by a GAUSS I distribution of the form I (r)-o,61 exp, C -O,Ooo59 r11]
While carrying out measurements the authors did not take the angular
Card 1/2 distribution of the "trunks" of the broad atmospheric shower and the in-
A fi)ro k# ;k L
AUMRS z Kazarov, R.Ye., Andr=Liksshvilip E.L. 56-6-42/1+7
TITIZ: Index of an Enerptic SinctnPof the Penetrating C4cTonent in rExtended
Atmospbaric, Toi-rent%l RLUX With Fixedsumber of ftrtieaes 0 pokazatele
energetioh~iskogo spektr& pronilmvushchey komponenty v shirokikh
atmosfernykh livnyakh a zaaannym &ialcm chostiti) '
PMUMICAL: Zhurn&l FImperimentallnoy i Teoretiobankoy Fiziki, 1957, VOL 33,
Nr 6, pp. 1528-1530 (USSR)
ABSTRACT; The energy speotrum of the penetrating oosmio radiation component was
measured at an altitude of 400 m above sea level and in a depth that
corresponds to 61, 127, 162 m water equivalent. For measuring 1&rge-
surface Geiger-MUller counting tubes in hoaoseopic arrangement were
used, and the following results were obtained;
Dbpth in water Density of penelrating Effootive +)
equivalent: Particles in m7 distance in m
61 0.49 * 0.07 16
127 0.20 + 0.02 27
card 1/2 162 0.15 10.02 29
AHDRONIKASHVILI, E. L.)
'Txperiments on Superfiuidity"
paper presented at the Conference on Low Temberature Physics, Kamerlingh Onnes.,
Conf., Leiden., 23-28 June 1958.
Dir., Physical Inst. Acad. Sci. Georgian SSR, Tibiliai
~J
PHASE I BOOK EXFLOITATION SOV/3500
Akulemiya nauk Gruzinskoy SM. lastitut fiziki
Trudy, tw 6 (Transactions of the Physics Institute of the Academy of Sciences
Grazinsb*ra sm~vol. 6) Tbilisi, 1958. 282 p.
PURPOSE: This book is intended for physicists and physical chemists, and May
be used by students taking advanced courses in physics and physical chemistry.
CMERACM: This is a collection of artic-les by members of the Physics rnstiti-te
an such subjects as bdlium-Ilp color,centerspolerized deuterons in a mg6goetic
field, effect of gammm-rays on copper oxides,, digital computer programs,, ex-
tensive air showers., effect of ther=3 gradient on crystals, and the theory
of heavy unstable pawticles. The last article, in Gwrgiaa., is a brief reame
of the development of physics in Georgia during the past 40 years. Abstracts
in Eaglish axe given after each article. No personalities are mentioned.
References accompany each article.
TAMB OF COMENTSt
Andronikashvili.. X. L. Oscillatory and Rotational Studies of Helium-II 3
Card 1/ -p.2
ANDRONIKASHVILI, E*Lo
Vibration and rotation experiments with helium II. Trudy Inst.
fiz.AN Gruz.SSR 6:3-32 158. (MIRA 1534)
(Liquid helium) (Rotating masses of fluid) (Vibration)
ANDRONIXASHVILI, 3,L,
Hydrodynamics of axial-torsional vibrations in a viscous fluid.
Trudy Inst.fiz.AN " SM 603-41 '58. (.MM 154)
a
(Hydrodyliamics) (Liquid helium)
TSADDZEj D.S.; ANDRDRIUSHVILI, I.L., akademik.
Formation of vbjft elasticity in rotating helium II. Soob. AN Gruz.
SSR 20 no.6:66'~-672 is '38. (MIRA 11:10)
I.Tbilisakiy goudaretyanny7 universitot imeni Stalina. 2. AN
Grusinskoy SSR (for Andronikashvili).
(Fielium)
D299/D305
AUTHORS: An ~nikas'hv-ili, E. L.,-and Kazarov, R. Ye.
TITLE: An energy-spectrum study of penetrating component of
extensive air showers
SOURCE: International Conference on Cosmic Radiation. Moscow,
1959. Trudy. v. 2. Shirokiye atmoefernyye livni i kas-
kadnyye protsessy, 159-162
TEXT: The energy spectrum of the penetrating component was studied
by investigating the absorption of the/a-mesons at various under-
ground depths. The measurements were conducted in various parts of
the town of Tbilisi, at an altitude of 400 m above sea level. Due
to the requirement of mobility of apparatus, the experiments were
not conducted under optimum conditions, yet the local possibilities
were exploited to the full. The apparatus consisted of a surface
part, incorporating hod3scoped counters, and an underground detec-
tor. Thv counters permitted measuring the soft-component density
over a range of 2 to 400 particles/me. The detector was placed at
Card 0
S/627/60/002/000/014/027
S/62 60/002/000/014/027
An energy-spectrum study D299YD305
depths of 162, 127 and 61 m; in one experimental series it was pla-
ced on the surface and shielded with lead. The shower size was de-
termined to an accuracy of + 50%, using the Nishimura-Kamata di8tri-
bution with an age parameteP s = 1.25. The showers detected were
divided into 3 groups according to particle number. Only those data
were processed which corresponded to showers, whose axes were con-
tained within a circle of radius 28 m from the center of the detec-
tion system. The energy spectrum for an effective distance of 28 m
from the shower axis is shown in a figure. For showers of small
size, the spectrum is represented by a straight line with inclina-
tion 0.54 + 0.07. For large showers, with number of particles 2.9.
5
.10 , the spectrum growB steeper with greater depths and the spec-
trum component becomes close to unity. Another figure shows the me-
son-component spectra. Each of these spectra can be represented by
a straight line with inclination nearly unity. The inclination in-
creases with number of particles in the shower. The maximum value
of the exponent was found to be 1.25 + 0.20, for a shower with 2.9.
105 particles. According to these spectra, the mean energy of the
Card 2/3
24-'M
AUTHORS: Andronikashvili Tsakadzop D. S. BOY/56-37-1-60/64
TITLE; The Propagation of Osoillations Along Vortex Filaments in Ro.-
tating Helium II (Rasprostraneniye kolebaniy vdoll vikhrevykh
nitey vo vrashchayushchemaya gelii II)
PERIODICAL: Zhurnal ekeperimentallnoy i teoreticheskoy fiziki, 1959, Vol 37,
Nr 19 PP 322 - 323 (USSR)
ABSTRACT: The following "Letter to the Editor" is the reproduction of a
lecture delivered at the 5. All-Union Conference for the Phy-
sics of Low Temperatures (Tbilisi 1958), The authors carried
out experiments with rotating He II and found that the results
obtained by these experiments confirm Onsager's hypothesis as
well as Feynman's theory, which is based upon the former, and
that they also)agree with the experimental results obtained by
Hall (Refs 1-3 . For the purpose of interpreting these experi-
ments the authors assumed that transversal elastic waves propa-
gate along the vortex filaments (experiment by Hall, obaervation
of periodic frequency variations of the oscillations of a thin
disk under rotating He II). Deviating from Hallf the authors
measured the magnitude of the logarithmic damping decrement 6
Card 1/3 of the oscillations of the disk. The measuring method has al-
The Propagation of Oscillations Along Vortex BOV/56-37-1-60/64
Filaments in Rotating Helium II
ready been described by the authors in an earlier paper (Ref 4)-
Figure 1 shows the results of measurements in form of a diagram
(ordinate 6, abscissa; number of periods); measuring tempera-
3 1
ture: 1.380K, rotation frequency 0 - 55-10- sec- . The helium
level above the surface of the disk varied rapidly as a result
of the intense brightening (podavechivaniye) (evaporation rate
3.6.10-2mm/min). Figure 2 shows the same as figure 1, but after
elimination of the level variation of the 1~,quid on the disk,
which in this caue developed slowly (0-5 mm 9ec). The curves
obtained show that with a variation of the evaporation rate of
the liquid on the disk, also the character of periodic damping
varies. This may be explained by the assumption that in the case
of oscillations of the disk, a standing transversal wave is
formed in the vortex filaments. The distancebetween two adjoin-
ing resonances corresponds to a lowering of the level by 0.065
am. The authors thank Yu. G. Mamaladze for discussions, and
further T. M. Shulits, K. B. Mesoyed and 1. M. Chkheidze for
Card 2/3
Thb Propagation of Osaillations Along Vortex SOV/56-37-1-60/64
Filaments in Rotating Helium II
assisting in carrying out the experiments. There are 2 figures
and 4 references, 3 of which are Soviet.
ASSOCIATION: Tbilieskiy gosudarstvennyy universitet (Tbilisi State University)
SUBMITTED: April 28, 1959
Card 3/3
24(8)
AUTHORt
TITLE:
PERIODICAL:
ABSTRACT:
Card 1/3
Andronikashvili, E. L., Tsakadze, D. S.
SOV/56-37-2-40/56
An Experimental Investigation of the Harmonic Oscillations of a
Disk in Rotating Helium II
Zhurnal eksperimentallnoy i teoreticheskoy fiziki, 1959,
Vol 37, Nr 2(8)t PP 562-564 (USSR)
This paper has been submitted at the All Union Congress on
Low-temperature Physics, in Thilisit October 1958. Earlier in-
vestigatione (Refs 1,2,3,4) took no account of the changes in
the damping processes in rotating helium II. An apparatus has
been developed by theauthore, in"which a transparent cup of
organic glass (diameter 44 mm,-f~lled with liquid helium) moved
with an angular velocity of (is 13.10-3880- 1 to w - 129.1d'3seo-
A disk with a diameter of 30 mm and a thickness of 1 mm was
suspended within the helium bath. This disk followed two mo-
tione aimultaneouslys 1) the rotation with a velocity equal to
that of the cup and 2) a harmonic oscillation about an axis '
perpendicular to the disk plane and parallel to the generatrix
of the cup. The determination of the logarithmic decrement of
SOV/56-37-2-40/56
An Experimental Investigation of the Harmonic oscillations of a Disk in
Rotating Helium II
the disk oscillations is described. In helium 11 6 the decrement
depends markedly upon the rotational speed. The curve describing the
relative increase of the damping effect due to the rotation as
dependent upon the rotational frequency passen through a max-
imum both for a rough and for a smooth disk. The course of the
slope of the curve after the maximum differs for the rough and
the smooth disk, the sign of the curvature also being different.
For a smooth disk the curve is parallel to the abscissae near
the coordinate origin. This speaks in favor of a gliding of the
vertexes relatively to the polished surface, ti4at is the vor-
texes do not adhere to the surface. Iij a diagram the temperature
course of the maximum increase of the camping (for
W - 55-10- 3 see-1) of a rough disk is shown. The increase of
the damping due to the subtraction of the superfluid component
amounts in the entire temperature interval to less than 65-70%
of the damping caused by the friction of the normal component.
For the purpose of explaining the particularities of the curves
Card 2/3 discussed herein Yu. 0. Mamaladze proposed to replace the
SOV/56-37-2-40/56
An Experimental Investigation of the Harmonic Osoillations,of a Disk in
Rotating Helium II
linear dependence of the quantity a/9H) upon (J (which
applies to the first section of the curve) by a more complicated
dependence, when the distance between neighboring vortexes
approaches their effective diameter, The authors express their
gratitude to Yui G. Mamaladze and S. Go Matinyan for valuable
suggestions and to L. A. Zamtaradze, T. G. Shullts, and I. M.
Chkheidze for their help in performing the experiments. There
are 2 figures and 5 referencess 4 of which are Soviat.
ASSOCIATION: Tbilisskiy gosudarstvennyy universitet (Tbilisi State Uni-
versity),
SUBMITTED: April 28, 1959
Card 3/3
S/12 62/000/007/013/027
D234YD308
A'OThORS: Andronikashvili, E. and Tsakadzej D.
TITLE: Hydrodynamics of rotating helium II
PERIODICAL: Referativnyy zhurnal, Mekhanika,no. 7, 1962, 45 ab-
stract 7B291 (Tr. Tbiliask. un-ta, 1960, 86, 1-43)
TEXT: The authors describe experimental investigations of viscous
properties of quantum and classical rotating liquids, and the re-
sults of theoretical investigations of the same-problem. Using an
eleastically suspended disc, the authors found that the dependence
of viscous properties on the velocity of rotation in helium II dif-
fer essentially fror. the same dependence in classical liquids.
Neasurements carried out with the aid of a hollow cylinder sub-
merged in rotating quantum liquid showed that such a iiquid has
space anisotropy of viscous properties. Besides, a shear modulus
in helium II and the possibility of propagation of elastic w6ves
along vortex threads formed in rotating helium II were found. All
-.these experimental facts agree well with the Onsager-Feynman theory
Card 1/2
AUTHORS: Andronikashvili, E. L., Bibilashvili, M. F., Dekano~idze, Ye. IN., and
TITLE: On the selection of extensive air showers wi-,h a j- r%-*
particles and on the determination of their t-l(-ctr ...-photon cornponent
parameters (In Georgian, with a 4-page Russian r6,,;uni(.-).
SOURCE: Akademiya nauk Gruzinskoy SSR. Institut fiziki. Trudy, v.7, 1960, 3-18.
TEXT: This is the description of a shower- selecting array for the investigation
of the penetrating component of extensive cosmic-ray air showers, and an explana-
tion of methods for the determination of optimal parameters for such a systen-i. 11-1
1958 the Institute of Physics, AS GruzSSR, constructed a 150-in long tunnel with
varying depth (200 mwe max.) for the investigation of the penetrating cornponent of
extensive air ,huwers (EAS). A surface laboratory with a ramiiied selection arra"
was built above the tunnel to select, detect, and determine the EAS. Optimum
system parameters and optimal observatioral conditions were calculated oil Oec-
tronic computers. Since the location of the shower axis and the total number of
particles can be found by measurement at 3 poi~itt~ of an EAS plane of obse r%-atiori,
a standard pattern consisting of an equilateral triangle (circurnradiu., 20 or 40 in,
was used, with groups of EAS counters and hodoscopic counter groups: the, triangl"~
Card 1/2
S/ ';4'~ib,0/007 /; 60000 /;-e
AUTHORS: Andronikashvili, E.L., ManvAladze, Yu.G., T--~akadzc, D,5.
TITLE. On the mea.-,urernent of the logarithmic damping Orcreinent.
SOURCE: Akaderniya nauk Gruzinskoy SSR. lnstitut fiziki. TrUd'j, V. 7,
59-66. (In Georgian, with 2-1/2 page Russian r6surn6.)
TEXT: A difficult problern has arisen in connection with the hydrodynamics of'
superflaid media, namely, the deterininativn of the damping of tursiona! oscillationn,
of a disk superimposed on :ts oniforin rotation about its own axis. A mcdlod is pt-i-)-
posc!d to tie the oscillatory amplitude to the time elapsed betwevii the transits of 1-/'11
of light through two fixed points; the method is equally applica-ble to a niezi-
urerrient of the damping decrement in oscillations of any other tvp(,-. A niirror
systeni is attached to the usual rotary suspension systein of the c%pcri-nent, a!,,d
t'.e reflected pencils of light are picked up by two photomultipliers located syn%ni~-T-
rically with respect to tht: equilibrium position. The Iransit time elap-,ed b,-t1A1(-t1j)
th. two photomultipliers is measured electronically; the time increases a-., the
1,itmn is damped, and the. logarithmic damping dec~ernvnt i,,j found from the relatl,.~n-
ship betweeii the transit time-,, (T), the number of half-perioris, (n), -md the
latory peri(,,d T whi~-h, in sirnplified forn) (for a symmetrit:al drrangi-tnujit of ~hi-
phot,)rnultipliers and v~eak damping) reads:
Gard 1,~Z
_77
".sn.: veromheykiTzm
A -i F, L, P-0 I I t CIV
-A
ANSTRACT'. ThS fOrmatlOfl Of dislocutJ01~9 RM color centerg in LLF and KC1 crystals
-;% Irradizited in
nrpnx i
ACCESSION NOR, AP5009505
ch i, -A-, ta-v j t.- :,taxi mn sit Fipprox imato I v the iayv dc-os nflmc IV . 0.4
L Th
h.'td t wo max I m-a n-p 4 t t h(, e (;,,r ika - jj t,-
I' !-AT!: IN T)l) n F
8 UUM I T'rb- D ; 00
NU FLEY sov: 006
F NT-l'
(MIER: Gol
SUl- CUDF: Ss
A.TD PRF-S~, 3230
Card 2'P.' 1:
S/056/60/038/03/06/033
24-6900 B006/BO14
AUTHORS: Andronik Kazarov, Re let
TITLEs Experimental Study of the Energy Spectrum of the Penetrating
Componont of Extensive Air Sh2H_2r_s/?
PERIODICAL: Zhurnal ekeperimentallnoy i teoreticheskoy fiziki, 1960,
Vol- 38, No. 3, PP- 703-707
TEXTs In the article under review, the authors studied the energy spectrum
(absorption) of the muon component of extensive air showers in the range
0,4 - 37 Bev. The investigations were made in various pits in Tbilisi, 400 m
above sea-level. Fig. I shows a bAck diagram of the device. A threefold -
coincidence between Geiger-counter L:roups was used for the shower separation.
The resolution of the separator was 2.5.10-6 see, that of the subterranean,
twofold coincidence was 2.5-10- 6 see, and that*of the hodoscope was
4.10-5 sec. In the various series of subterranean meaeurements, the group of
hodoscope counters was placed at a depth of 162, 127, and 61 m. water equi-
Card 1/3
82hO8
Experimental Study of the Energy Spectrum of S/056/60/036/03/06/033
the P4netrating Component of Extensive Air B006/BO14
Showers
valent, in one series of measurements the detector of 'the penetrating par-
ticles on the surface was containad in a lead casing of 3.2 m water equi-
valent.' The measurements were divided into three groups of showers with
particle humbers of 7,1 3' 1','- 2.V.104 4 _ 1.1.105, and 1.1.105
01 , 2.V,10
- 4.5-10 5; the average particle number's were 1-4-104 , 7-10 4, and 2.9.105.
The results obtained in the various series of measurements are compiled in a
table. The mean density ?t- of the muon flux was calculated from the equation
n
In - , where 6denotes the area of a detector series,.n the number
n - n..
of recorded showers of one group, and n,,the number of showers of this group
with muon admixture. The distance r between detector and shower axis at a
depth h is expressed by the relation r 2 _ R 2sin2T + (Rcospost~- b sin,$) 2
where R is the distance between the trace of the shover axis on the surface
and the origin of coordinates, ~P and & the azimuth- and zenith angles. Fig. 2
shows the energy spectrum. The muon spectrum in the logarithmic coordinate
system may be well represented by a straiCht line with a slope of 0.54,t0.07 k-V
Card 2/3
83173
S/056~60/039/002/010/044
B006/ ~056
Al"THO481 Andronikashvilit E.Le I
TITLE: The Transverse Component of the Momentum of Strange
Particles Generated in Penetrating Cosmic Ray Showers/~
PERIODICAL: Zhurnal eksperimentalluoy i teoreticheskoy fiziki, 1960,
Vol- 39, No. 2(8)1 pp. 267 - 270
TEXT: One of the most interesting phenomena of nuclear interaction at
high and ultra-high energies is the constancy of the transverse momentum
components (P ) of the secondary cosmic-ray pione and the relatively
small spread ~f moments, round the mean value (0-3 i 0-5) Bev/c. The
transverse components of the momenta of nucleons, antinuoleonap and
strange particles have hitherto been only little investigated. Perking
and Takibayev found the Pt-value of the three last-mentioned particles
to be spread considerably and attaining Values up to several Bev/0.
The authors of the resent paper attempted to oarry out a direct mea-
9 Z� particles recorded in the Ellbrus
surement of Pt on A 1 909 and
Card 113
83173
The Transverse Component of the Momentum 8/056/60/039/002/010/044
of Strange Particles Generated in Boo6p3056
Penetrating Cosmic Ray showers
laboratory, The particles were reoorded by means of a double cloud
chamber in a magnetic field. The apparatus and method are more closely
described in Refs. 2-7- Measurements were carried out on 20 Ao, 21 00,
and 30 Z-~- particles, whose other parameters were known. In order to
characterize the recording probabilities of the particles, each decay
event was provided with a weight W_ I, where Wi is the a priori proba-
bility of its recoxding. The error in the number of events recorded per
(y W;2)1/2
Ft interval is then given by _ . The recording probability
as a function of P t is shown in Fig. 1. Up to about 2 Bev/0''i shows no
spread. Fig. 2 shows the P t-distribution of all decay events of strange
particles corrected in this way. The mean values P t measured are given
in a table. The P t- spectrum has its most probable value in the momentum
range (0.2 - 0-4) Bev/c, and attains values of uP to 3 Bev/c. it is,
AUTHOR:
TITLE:
87542
S/053/60/072/004/002/006
B029/BO56
Andronikashvil' E. L.
lnveatigation of the Thermal Structure of Helium II by
Scattering of Cold Neutrons
PERIODICALs Uspekhi fizicheskikh nauk, 1960, Vol. 72, No- 4,
pp. 697-710
TEXT: L. D. Landau (Ref. 1) postulated a certain shape of the spectrum
of thermal oscillations of helium II already in 1947. According to
calculations made by I. M. Khalatnikov (Ref. 2), the following numerical
values hold for the parameters of the rotons jN/k - 8.90K; p/tv = 1.99 1-1;
p - 0.26 mHe' The superfluid component of helium II, unlike its normal
component, contains neither phonons nor rotons, and is a medium in Which
quasiparticles of both types are discretely distributed. Various attempts
at determining the inner structure of helium Il by neutron diffraction
study have failed. According to M. Cohen and R. P. Feynman (Ref. 9), the
Card 1/4
87542
Investigation of the Thermal Structure of S/053/6()/072/004/002/006
Hdlium II by Scattering of Cold Neutrons B029/BO56
between the two experiments as well aq between theory and experiment.
Yarnell found A/k - (8.68 - 0.0084)TI OK for the empirical temperature
dependence of the gap width. The production energy of a roton decreases
with an approach of temperature to the X-point. The production probability
of the roton grows not only by an increase of the temperature of the ex-
ponent,-but also by a decrease of 0the gap width. A noticeable decrease of
the gap width begins at 1.8 - 1.9 K. Within this temperature range, rotons
enter into interaction with one another. L. P. Pitayevskiy (Ref. 14)
investigated the manner in which the Landau dispersion curve ends within
the range of high momenta. At high energies and momenta there exists a
certain threshold of roton stability. The roton may either emit a phonon
or decay into two excitons with the same directions of motion and the
same final momenta, or into two excitons, with different directions of
emission. Various problems connected herewith will probably soon be solved-
It is noted that Nobel Prize winner Lee, together with Mohling (Ref. 15)
demonstmted a possibility of immediately determining the chirality of
rotons. The angular dependence of the intensity of the scattered neutrons
indicates whether rotons have an eigenangular momentum or not. Data
Card 3/4
AMMOMMA .-. 1. L.-BIBIUSHULT,, M. r,.o VAMNGAO 0. L,, GVAIA=,, T. V.0
-4MISHULIP 11. Z.p XMU3XZp P. V. and EMMMAp 1. 1.
"Angular Distribution of the Penetrating CwTonent of Xxtensive Air Showers
at the Depth of 200 m,v,o,"'
Report presentea at the Internatimial Conference on Cosmic Faye and
Earth Storm, 4-1,5 Sep 61,p Xyoto.. Japan.
Pbysical Institute, Academyof Sciences,, Georgia SSR
ANDRONIKASHVILIJ, Blevter Luarpabovich; GAMMUDZE, Georgiy
MCHELI, Otar Arkhipovich; HAMAIADZE, Turiy
Georgiyovichl KUZNETSOVA, Ye.B., red.; KRYUCHKCVA, V.11'1
tekhn. redo
CIaboratory works on pbysice; mechanics, molecular plWsics,
electricity, and magnetism) Laboratorrye raboty po fizike,-
mekhanika,, molokuliarnaia fizika,, elaktricheetviA mape-
tizm. Pod red. E.L.Andronikashvili. Moskva~ Gos. '*izd-vo
fiziko-matem. lit-ryj, 1961. 182 p, (MMA 150)
' (Physico-Laboratory mmals)
3/053/61/073/001/001/C)04
B006/BO56
AUTHORS: Andronikashvili, E. L.,,Mamaladze, Yu. G,. Matinyan, S G,;
Tsakadze, D. S.
TITLE; The Properties of Quantized Vortices Occ-.irring in Rotating
Helium II
PERIODICAL: Uspekhi fizicheskikh nauk, 1961, Vol, 73, No 1, Pp.~ 3 - 40
TEXT: A detailed review is given of experimental and, above all,
theoretical investigations on the hydrodynamics of oscillations of solids
suspended in rotating He 11. Progress achieved recently in this field is
of special importance for problems of superfluidity. The present review
gives no new material but merely an explanation of the present stage of
research work in this field, the authors mainly discussing their own
publications and the results of their own investigation, The paper
consists of four parts, The first part deals with the transcritica~
properties connected with the rotation of He II, the superfluid ani normal
components of He II, the hypothesis by Onsager-Feynman on the formation
of vortex filaments and the variational problem ccnnected herewith, the
Card 1/3
The Properties of Quantized Vortices S/053/61/073/001/00-1/004
Occurring in Rotating Helium Il B006/BO56
velocity distribution in moving vortices of a superfluid liquid, and the
experiments by Hall and Vinen (measurement of the circulation quantum).
The second part deals with the oscillations of a solid in rotating He II;
the following problems are discussed in detailt results obtained by Hall
and Vinen, the energy properties of vortex systems, experimontal and
theoretical results obtained by Andronikashvili and Tsakadze, a d!3k In
rotating He II, the effective density of the superfluid compongnt as a
function of the rate of rotation; comparison of the results obtained by
iall with those of scientists of the Tbilisi group (the authors); study of
the damping of oscillations of a solid in rotating He II, re.;ults obtaiv~td
by experimental investigations carried out at the Cryogenlt~s Lab-~;ratory
of' Tbilisskiy universitet (Tbilisi University); 'he damping
de-,~rement of oscillations as a function nf nitC, -,a-.-*Aolis
-onditions, temperature dependc~nne of ~f 4he ratc- upon
damping and oacillation frequency, resonan-c~ ph-~.non,7,na.. invcsl~lgalica cf
the rate dependence of damping of torsional o9cillationc, ilc,, Part 3
deals with the hydrodynamics of rotating holilim 11; afi~,r an
several results obtained by theoretical investigation,- by Hall;
Cnrd 2/3
ANDnowrxAsMtj S L
PHASE I BOOK RXPLOITATION SOV/16176
Konobeyevskiy, S. T:, Corresponding Member, Academy of Sciences
USSR* Reap. W..
DeYstviYe vaderuvkh izluchen1v na materialy (The Effect of
Nuclear Radiation on Materials). Moscow, Izd-v(j AN SSSR,
1962. 383 P. Errata allp inserted. 4000 copies printed.
Sponsoring Agenoyt Akademlya naWc SSSRs Otdelenlys takh"I.
oheakikh naukj Otdvloniye Miko-matematicheakikh nauk.
Reap. Ed.t S. T. Konoboyevskiy; Deputy Reap. Ed.1 a. A.
Adasinskiy; Editorial Boardl P. L. Gruzln 0. V. Kurdyumov)
B. M. Levitakiy, V. S. Lyashenko (Deoeasedl,.Yu. A. Martynyuk,
Yu. I.-Pokrovskiy, and N. F. Pravdy~kj Id. of Publishing
House: M. 0. Makarenkoj Tech. Vdas T. V. Polyikova and
1. N. Dorokhina.
Card 1/14
The Effect of Nuclear Radiation (Gont.) SOV/6176
PURPOSEs This book is Intended for personnel concerned with
nuclear materials.
OOVERAGE: This is a colleotion of papers presented at the
Moscow Conference on the Effect of Nuclear Radiation on
Materials, held Deoember 6-10, 1960. The material reflects
certain trends In the work being conducted in the Soviet
scientific research orginization. Some of the papers are
devoted to the experimental study of the effect of neutron
irradiation on reactor materials (steel, rerrous alloys,
Molybdenum, avia4 graphite, and n1ohrom:s). Others deal
with the theory or neutron Irradiation ffeots (physioo-
chemical transformations, relwcation of internal at-eBies,
internal friction) and ahangea In tfie structure and proper-w
ties of various crystals. Special attention is given to
the effect of Intense Y-radiation on the electrical,
magnetio, and optical proportion of metals, dielectric*,
and aemloonduotorb.
Card 2/14
The Rrfeats of Nualear Radiation (Cont.) sov/6iT6
Pravdyuk,,N. F., YU. 1. Pokrovakiy, and V. 1. Vikhrov. Effect
or Neutron Irradiation on Internal'FrIation in Mo6o- and
Polyorystals of Zino 235
akharov,,OW.:D Effect of Neutron Irradiation and Plastic
~:A
OTC
a orma on on Young's Modulus and internal Friction 242
ionobeyevekly, S. T.p and Fp P. Butra,. Radiog .raphieIEffe9ts
in Noutroh-Irrad:Vated aryitils 251
KolontsqySL-X2,-Y. Radiation and DefQrzation Disturbances
En -Crystals 257
-Ta-ogina-L-~ Ye. V' kolonteova and V V. Zube*n3ca. Radiation
Dis"anoes in Crystals of 1Ltth1um.kU,-;-;-,i 264
N#_QL_t"jta, and L. F. Vorozheykina.
so ti-a-F Dist noes on Xeohanl-oa-l--KM-O�~~~
Properties of Potassium Chloride Crystals- 268
Card 10/14
The Effect of Nuclear Radiation (Cont.) SOV/6176
~*60_ronikashvili, H. N. G. Politov, and M. Sh. Getiya.
'Effie_f"""bf -IrFa-Ua-tr6n in a Reactor on Structure and Hardness
of Alkali-Halide Crystals 277
The irradiation was oonducted in the IRT-2000 Reactor at
the Physics Institute of the Georgian Academy of Sciences.
Orlov, A. N. Use of Electronic Computers for Calculating
Radiation Disturbances in Metals
Dekhtyar, 1. Ya., and A. M. She"layev. Change in Physical
Properties of Ferromagnetib Metals and Alloys Caused by
Y -Radiation 1
Gevtsriken, S. D. (Deceased), and N. P. Plotnikova. Effect
of Y-Irradiation on Processes of Ordering and Disordering in
Fe-Al Alloys
Konozenko, I. Do, V. I. Ustlyanov, and A. P. Galushka.
Y-Conductivity of Cadmium Selenide
288
294
306
308
Card !1/.L-'-1
'N
ACCESSION NRi..-AT3012967... S/2749/62/008/000/0209/0212
AUTHORS: Andronikashvili, Be L.1 Toakadzes Do S'o
............. .
TITLE; Measurement of the frequency and damping ofi
oscillations of'a.light disc immersed in rotating He-II
SOURCE: AN GruzSSR. Institut fiziki. Trudy*, v. 8, 1962, 209-212
TOPIC TAGS: superfluidity, helium II,, superfluidity measurements
rotating disc method, disc frequency,.disc oscillations, damping of
disc oscillations, vortex filaments, quantum liquids
ABSTRACT: Axial-torsional oscillations of a disc immersed in rotat-
i ing He-II and rotating uniformly at the same speed as the helium
were investigated. This is a continuation of earlier work by the
authors (Soobshcheniya AN GSSR, XX#,6, 6881 1958 and ZhETF, v. 37,
(7), 322, 1959). but in the earlier investigations the damping or
the frequency was negligible in one case and the frequency was neglil*!'
'Card 1/3
'11,~e*)(CCESSION NRt AT3012967
gible in the other. The instrument developed for this purpose in
desciibed elsewhere (Trudy'1P, AN GSSR v. 7, 64, 1960). The dampingi
est~i confirm the earlier results. The frequency variation of the
t
disc as a function of the speed first increases linearly and then
tends to saturation. It is pointed out as remarkable that the bend
of the curve occurs in the frequency region corresponding to maximum;
damping. The curve for the frequency variation deviates from-the I
theoretical at higher frequencies (and the discrepanc
y-is attributed.;
to the slipping of the vortex filaments). The experimental data
confirm the assumption that the slip ingreases at velocities at
which-the effective radii of the vortices overlap,. and the decrease 1
-in damping is due to the increased slipping of the vortices because
0
f the collectivization.of their oscillations. "The authors are
grateful to K. B. Mesoyed and G. M. Gudzbabidze for help with thep
1'Peasurements and to Yu. G. Mamaladze and S. G. Hatinyan for a didr-
cussion of the results of the experiment." Orig. art. has: 1 fiaurel
and 1 formula.
Card Z/J
AT3012967
ASSOCIATION: Institut fiziki AN GruzSSR (Physics Institute, AN
GruzSSR)
SUBMITTED: 00 DATE ACQ: 040ct63 ENCL: 00
SUB CODE: PH 00 REP SOV: 008 OTHER: 001-
Qmrd, 3/3
ANDRONIKASHVILI. E.L.
Symposium on the Preparation of Programs and the Use of Research
Reactors. Atom. energ. 13 no.1:80-83 J1 162. (MIRA 15:7)
(Nuclear reactors--Gongresses)
L ?-43?--66
EI;IT(1)/E'elT(ro)/T/1-~'4P(t)/F,'WP(b)/OWA(c) IJP(c) JDIJGI-910S
AT5023807 UR/0000/62/000/000/0268/0276
ACCESSION NR;
0-
ALMIOR: Andronikashvili, E. L.; Politov, N. G.; Vorozheykina, L. F.
!TITLE: Effect of lattice disturbances on the mechanical and optical properties:of
'potassium chloride crystals
!SOURCE: Soveshchaniye
41oscow 1960.,,,peystviye yadernykh,izlucheniy na materialy (The effect of nucleir
;radiation on materials); doklady soveshchaniya. Hoscow, Izd-vo AN SSSR, 1962,
'i268-276
[TOPIC TAGS: potassium chloride, crystal lattice defects F band, color centers
irradiation effect, hardness, x ray irradiation, neutron irradiation,
irradiation
i
ABSTRACT: The paper presents initial results of studies under~*en at the
Institut fiziki AN Cruz. SSR (Institute of Physics AN Cruz SS91,~ for tho purpo
of determining the relati hi b r s types of 1-attice disturbance
ry:n
and the hardness of alkalgalpide? stallaso Various methods of inducing the
disturbances were employed (a--d-d-nMa coloring, x-irradiations and irradiation
with mixed neutron and gamma radiation in the IRT-2000 reactor). Additive and
Aubtractive coloring of KCI single crystals caused a decrease in microhardnese and
Card 1/2--
L 2437-66
r
ACCESSION NR: AT5023807
scratch hardness; the latter was more senettive to change in the number c
than the former. Upon exposure to n, X-radiation, the microhardness and scratch
hardness behave differently an the dose increases. It is suggested,thatthia
irradiation causes, in addition to the formation of F-centers, now kinds of
lattice disturbances which even at low concentrations mask the influence of
F-centers oit the microhardness effect. The hypothesis that the same defects may
affect different types of hardness to different degrees is confirmed., Ft
more, situations arise where different types of hardness..change in different
directions under the same conditions. This indicates that each type of hardness
has a predominant relationship with certain definite types of lattice disturbances.
Studies of the influence of x-rays on the F-band intensity show that the number
of F-centers changes in~a complex manner with inereasing,irradiation time. Orig.
art. has: 10 figures,
ASSOCIATION., none
SUBMTTED: ISAug62 ENCM 00 SUB CODEt SSq.OP
NO REF SOV; 003 OIM: .015
Card 2/2
jj- 2438-66 LW WIEWT (M)/EPF(O)/EPF(U) -2/pi/EWPM /EWP(b) /9'#[A (a)-, IJP(c)
JD/JG/GG/GS
ACCESSION NR: AT5023808 UR/TDr2/ODO/ODO1O277/O287 S/
qY 9, q, 50
AUZIORt Andronikashvilip. 1, L.4, PolitoV, N. G.; Getiya, M. Sh. Z~- -1
Y, -60
TITIZ: Effect of reactor irradiatijolon the structure and hardness of alkali
halide crystals '~7
11-4q t
SOURA )a stvive vadernAh- iztucheniy na material
Soves chaniye po problems I
Moscow, 1960 eDaystviye yadern~-izlucheniy na materialy (The effect of nuclear
radiation terials); doklady soveshchaniya. Moscow, Izd-vo AN SSSRj 1962,
277-287
TOPIC TAGS: potassium chloride, lithium fluoride, crystal dislocation, hardness,
irradiation effect, x ray irradiation, neutron irradiation, gamma irradiation
ABSTRACT: Potassium chloride and lithium fluoride single crystals were irradiated
in the IRT-2000 reactor of the Institut fitiki AN Cruz. SSR (Institute of
AN Cruz. SSR)O',43,-vertical experimental channel No. 5. The thermal
neutron - GF-"j-~V-j 1`6T X 1012 n/cm2 see. The dislocations were studied by,
etching, The dislocation density in KC1 crystals is utzffected b the x-rays in
D16 n/cm2, the
the dose interval employed, Beginning" at an integral d,,Nae oi-10
or
reactor lriadLatIowctusss the,ftslocatLon density to rise sharply.,.Long b f
the,11"arance of'the arst dislocations induced by.the irriiiationi the micro. -
Card
L 2438-66
ACCESSION NRt AT5023808
hardness of KCI and LiF cryataia begins to increase with the irradiation time.
Thermal treatment of irradiated LLF crystals at 250C restores the initial micro.
hardness only partially, whereas thermal treatment at 500C reestablishes the
original mechanical properties of the crystals completely. The dislocation
density in irradiated samples remains unchanged a& a result of annealing at 250C
as compared to nonannealed samples, Consequently, dislocations which formed
during irradiation may under certain conditions have no effect on the microhardness
of the irradiated samples. Thermal treatment causes a decrease of dislocation
density beginning at 350C. In LiF crystals annealed at 700C, no dialocatio
are'observed with the aid of the technique employed#' perhaps because they are
completely masked by square pores. Origb art& has:- 9 figures,
ASSOCIATION: none
SUBMITTED: 18Aug62 ERCL: 00 SUB CODEs, NPj SS
NO REF SOV: 000 &nm;
.003
4.b
L.; BUDA,, B.G.)* KIKKADZE, G.J.; FELIDMAN, L.I.;
CHARTURIYA, V.m.
Model of a radiative indium-gallium loop for the IRT-2000 reactor
at Tbilisi. Atom. enorg, 13 no*4:342-349 0 162. (14M 15:9)
(Nuclear reactors)
ANDROIDSHVILI, E,
International 87mposium on Radiation Dmage to Solid Bodies and
Reactor Materials* Atomeenerg, 13 no.6%606-608 D 162. (MIRA 15t12)
(Solids,, Effect of radiation on-Congresses)
(Nuclear reactors--Materials)
S/048/62/026/005/019/022
31.7,5LIO B108/B102
i1ii-THORS ,--Andronikashvili, B. L., Bibilashvili, 14. F., VardenGa, G. D.,
Gvaladze, T. V., Dzhavrishvili, A. K., Kazarov, R. Ye.
Kuridze, R. V., and Khaldeyeva, I. V.
TITLE: Angular distribution of the penetrating component of exten-
sive atmospheric showers at a depth of 200 m water
equivalent
PE'RIODICAL: Alcademiya nauk SSSR. Izvestiya. Seriya fizicheskaya, v. 26,
no. 5, 19062, 682-684
TEXT: The angular distribution of the axes of extensive atmospheric
showers uas determined by various methods, mainly usinG a cloud chamber.
The direction of the axis was established from the electron-photon
component. At a distance of 0-5H or less from the shower axis (H - depth
at which the detector is placed under the surface), the particle
distribution is given by I,,~ - I OCOS8*3,~, as has been established by various
authors. The present authors' results agree with this law. There are
2 figures.
Card 1/1
3/056 62/043/004/06o/o6i
Study of rotated lie I! near B1 YB166
detector were amplified and conducted into an 3TTTT-09 (EPP-09) recorder.
A'*t temperatures around the A-point (2.09 and 2,150K) the resonance .
frequency was fixed in motionless He. The temperature of the lie was then
raised to 2.250K by sto ping evacuation. The resonator was set in
motion (00 W 0 .98 aec-1 ~j and after 3-4 minutes He was again pumped out
at a rate of 2 mia llg per minute. The amplitude of secondary sound was
measured at the moment of passing the previously fixed temperature. The
same measurements were also made with motionless He. The measurements
at a fixed temperature of 2.150K showed that the maximum amplitude of
secondary sound does not change, i.e., the formation of vortices slows
down. The amplitude becomes lowe)r when the temperature is raised
somewhat above the X-point and is then again reduced to 2.150Y, without
the resonator being stopped. The measurements at fixed tempprature of
2.090K give another picture; at the first reduction of temperature the
amplitude of secondary sound becomeslower by 2Vv. The same reduction is
reached after 1-5 to 2 minutes rotation at the same angular velocity when
the Ile is kept at a temperature of approximately 2.090K. The time that
elapsed before this slowed down the formation of One .ager-Feynman
vortice's is estimated to have been 4 minutes(at 2-150K).
V~
Card 2/3
5/056/62/043/004/060/061
Study of rotated Ile II near ... B104/13166
ASSOCIATICN: Institut fiziki Akademii nauk Cruzinskoy SSR (Institute
of Physics of the Academy of Sciences Gruzinskaya SSR)
I
SUBMITTED: Augu~*t 31, 1962
'Card 3/3
ANDRDNTKILSHVILI. E.I..
*Scientific policy and development of productive forces in the
Georgian S.S.R."
Report submitted to the Confe on the Application of Science and Technology
for the Benefit of the Leso Doveloped Areas*
Geneva,v SwitzerlwA 4-20 Februmy 3.963
ANDR01419AS - - US --G. -A-
.q E, LEI URNAVELIp T. T.; BIBnASHVM3 I. F., GEG Iff M.. . T.
DZHAVRISHVILIs .2 KOZAROV2 R. Ye.3 KURIDZEX R. V.: IMLDEYEVA) I. V,
Inve.-tigation of the properties of pentrating components at a depth of 200 Mve.
Report submitted for the 8th Intl. Conf, on Cosmic Rays (IUPAP), Jaipur, Indiaj,
2-14 Dee 1963.
ANDRONIKASW.ILI#..,B.L*; BABLIDZEp R.Ao; OUDZHABIDZEp G.V.;
TSAKADZEI D.S. (Tbilisi)
"Experimental-study of generation and disappearance of vortices at a
phase transition from a quantum liquid into a classical one and vice versa"*
report presented at the 2nd All-Union Congress on Theoretical and Applied
Mechanics, Moscow, 29 January - 5 February 1964
ACCESSION NR: AP4012537 S/0056/64/046/001/0157/0161
Andronikashvilij E., L.; Mesoyed, K. B.; Tsakadze, Dzh. S.
TITM Possible existence of Onsager-Feynman vortices at tempera-
tures above the Lambda point
SOURCEs Zhurnal eksper. i teoret. fiz., v. 46, no. 1,*1964, 157-161
TPPIC TAGSs Superfluidity, Helium II, Onsager Feynman vortices,
Oantum liquid, Lambda point, rotating helium, liquid helium
ABSTRAM The vortex properties of rotating helium at temperatures
Oirectly above the X point, observed by the authors in 1958 (E. A.
indronikashvili, Dzh. S. Tsakadze, Yu. G. Mamaladze, and S. G.
I--Aatinyan, Paper at Fifth All-Union Conference on Low-Temperature
"Aftsics, Tbilisi, 1958) was rechecked by an improved procedure and
t%-'Pith equipment of increased precision and uniformity.of motion. it
'As shown that in He I there is no dependence of the damping on the
Card 1/3
ACCESSION NRt AP4012537
speed of rotation, as expected of.a classical liquid. However, if
rotating He'II is superheated above the X point and pressure pro-
duced over it, the difference in damping not only does not equal
zero, but also exhibits, as a function of the oscillation frequency,
a dharacteristic maximum at the same angular velocities at which a
max
mum is observed below-the X point. This indicates that the ef-
e s connected with the existence cf the Onsager-Feynman vortices
f 4
continue to-exist in the rotating liquid helium if the state above
the X point is obtained by superheating rotating He II.: "The
authors are grateful to Yu. G. Mamaladze for a discussion of'the re-
sults and to G. V. Gudzhabidze for help with the measurements."
Orig. art@ hass 5 figures and 1 formula.
ASSOCIATIONt Institut fiziki AN GruzSSR (Institute of Physics AN
GruzSSR)j Thilieskik Gosudarstvanny*y universitet (Tbilisi State
University)
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0.
ACCESSION NR: AP4012537
SUBMITTED2 .06Aug63
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DATE'ACO: 26Feb64
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nFOINIKASHVILIji, F. - HAB=,- G. V. ; TSAKADZE, D. S.
. GUDZ
."Relaxation of Onsager-Feynman's Vortices at Heating of Rotating Helium II above
TX.11
report submitted for 9th Intl Conf on Low Temperature Physics, Columbus, Ohio,
31 Aug-4 sep 64.
Inst of Physics, AS GSSR, Thilisi.
ACCESSION NR: AT4016310 - S/0000/62/000/000/0287/0303
AMOR: Andronikashvili, E.L.; PoliLov, N.C.; Mumladze, V.V.; Vorozhaykina, L*F
TITLE: Plasticity and thermal conductivity of defective alkali halide crystals.
SOURCE: Was. soveshch. po fiz. shchelochnogaloidn. kristallov. 2d, Riga, 1961.
Trudy* Fiz. shchelochnogaloidn. kristallov (Physics of alka;i halide crystals).
Riga, 1962, 287-303
TOPIC TAGS: alkAli-halide crystal, plasticity, thermal conductivity, F-center,
reactor radiation, crystallography, radiation defect, crystal physical property,
hardness
ABSTRACT: In an extension of the authors' previous work, the influence of
F-centers on plasticity and the influence of reactor radiation on plasticity
and thermal conductivity were examined in Kcl crystals. Ihe influence of
reactor radiation on plasticity was also examined in LiF crystals. F-centers
were produced by x-raying in a RUP-200-20-4 unit and an IRT-200 reactor was
used for neutron and gamma radiations. Hardness was measured by the scratching
and the pendulum swing damping methods. -optical absorption spectra were measur-
C,,d 1/3
-ACCESSION NR: AT4016310
ad with an SF-4 spectrophotometer and an assembly, based on the principles of
A.V. loffe and A.F. loffe and constructed in the authors' laboratory, was used
for the determination of thermal conductivity. This method was applicablo at
close-to-room temperatures and, in a 5 minute procedure, produced results with
an accuracy of 3-5 per cent. At least one hundred samples were examined.
Curves for the dependence of hardness on the duration of x-raying and the con-
centration of F-centers showed a steady growth of plasticity of KC1 crystals
for the duration of x-raying, accompanied by the accumulation of F-centers.
Under the influence of reactor radiation KC1 crystals showed an initial growth
of microhardness, which ceases when a dose of,_~_/ 1016 neutron/cm2 is reached.
In contrast, the resistance to plastic deformation and mechanical strength
continued to grow in LiF crystals. The thermal conductivity of KC1 crystals
under reactor radiation followed acomplex pattern, showing an initial decreage,
followed by an increase as radiation continued. Orig. art. has: 11 figures.
ASSOCIATION: Institut fiziki AN Gruzinskoy SSR (Institute of Physics, Academy-
qf Sciences of the Georgian SSR)
card .2/3
ACCESSION NR; AT401631.0
SUBMITTED: 00
SUA CODE: Q?
DATE ACQ.- 06Xar64
NO REP SOV,. 010
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OTHER: 013
Card313
ACCESSION NR: AT4016309 S/0000/62/000/000/0284/0286
i
AUTHOR: An4ronikimhviZ~j,,.&,L.; Politov, N.G.; Getiya, M. Sh.
TITLE: Radiation generation of dislocations in alkali halide crystals
SOURCE: Vses. soveshch. po f4-.. &%chelochnogaloidn. kristallov. 2d, Riga,
1961. Trudy*. Fiz. shchelochnoi, ..Loidn. kristallov (Physics of alkali halide
crystals). Riga, 1962, 284-286, p: ~ 3 pages of illustiations following p. 286
TOPIC TAGS: alkali halide, crystal, radiatton defect, neutron irradiation,
radiation, crystallography, crystal. physical property
ABSTR.!,.CT: Macial acetic acid saturated with oirz- 2~ons and water, respectively,
were used for etching KCI and LiF monocrystals in a study of the ;af'*ect of
radiation on the dislocation density in the crystals. A RUP-200-2C-4 emitter
was used for the x-raying. T""'e neuron-.'_.adiation was effected a,- a thelmal
power of 1000 kw with a 1.03 . lol2 neut;:,,.-./c-,-,2. see therr-11 neutro-i flow on
the IFd-200 nuSlear reactor of the Institut 'A.-iziki AN Gruzinskcy cz;R (Physics
Institute of the Georgian ~cadcmy of Sciences). Ten-hour x-ray tests were
found to produce no effect on the dislocation density in the crystals, and
only after 2 1/4 hra. of neutron irradiation could the appearance of new con-
Card 1/2
ANDRCIIIKASHVILI H.L akademik; BUDA,'B.G.; DEVNOZASHVILI, D.S.;
iii~ - KITSMARISHVILI, E.S.; TOPSHYAN, L.S.;
CHANTURM, V.M.
Low-temperature loop of an IRT-2000 reactor. Soob. AN Graz.
SSR 34 no.1t45-52 Apt64 (MIRA 17t7)
1. AN Gruzinskoy SSR (for Abdronikashvili).
Radiation damagen
i,v,3:366-370 Mr
L 9294---"66 (MMEWNWEVib) UP (r, I a --- -
F
A
CC
ACC NRj Apgo264oT SOURCE CODE: UR/0386/65/OO2/oO6/o278/o28l-',
U'
A
AUTHOR: AUU0 hy~ Teakadze,, D. S.
ORG.-
ORG: Institute of Pbarsics, Acad= of ftlences Georgian SSA,(Institut fizild Akadoul
nauk GrUZI&koy SSR) Y Ll 1 5, 1--
nau~
TITLE: Dependence of the density of rotating liquid helluA the angular velocity
SOURCE: Zhurnal eksperimentallnoy I teoreticheskoy fiziki. Pialma v redaktsiyu.
Prilozheniye,, ve 2p no* 6j 1902 278-281
TOPIC TAGS: liquid helium., quantum 113~i j vortex
ABSTRACT: To ascertain the velocity dependence of the density of helium II., and to
check on the assumption that the presence of vortex filaments "loosens up" rotating
helium IIj, the authors undertook an experiment, in which a sensitive pycnometer-was
set in rotation (Fig. 1). The apparatus and procedure are described briefly. The
instrument was sensitive enough to register charges in the sixth significant figure
of the density. The measured dependence of the density of helium II on the rotary
speed at constant temperature (Fig. 2) discloses the striking fact that when the
helium II Is twisted it becomes much denser,, and the increase in density rises with
the temperature and with the angular velocity. If helium-I Is set in rotation nt
the same angular velocity, no change in pressure can be observed. It is concluded
on this basis that some specific mechanism condensing the helium II exists. It is
not connected with the presence of centrifugal pressure, but apparently with the
1/2
L 9294-w66
-ACC-NRi AP5026407
existence of quantized vortices
of the Onsager-Fayrmn type. It __7
is also reported that a Jump
was observed in the density of
the liquid helium as it goes
througfi the phase transition
point,, thus offering evidence
that during rotation the Hell-
Hel phase transition is of first
and not of second order utbors
fl parti.
thank Yus Gi __ 4
cipating in the discu sion of the
results. Orig. art. has: 2
figures. fde-
w0.% sec-
Fig. 2. Density of He 11 vs.
rota:7 speed at seyeral con-
stant tewpomtures.
Fig* 1, Diagram of pycnomster~
SM CODZ 20/ OM DA7jt 23jul65/ ORM MWt 000/ OTH MWt 001
Cwd 212
4 ) /aTA
L-227-77-66
ACC -MiD6009716 SOURCE CODE: UR/0386/66/003/00410173/0177
AUTHORs Andron&hfjj0.X1-l1g.,&jjLjj Bedbenova, Do Sol Politov, No Go;
Tsakadzi~p- DIC So
ORG: Institute of Physicsl Academy of Sciences, Georgian SSR (Institut
fiziki Akademii nauk Gruzinskoy SSR)
TITLE1 Scattering of cold neutrons in irradiated KBr and NaCl crystals
SOURCE: Zhurnal eksperimentallnoy I teoretichaskoy fizikia Pis'ma
v redaktaiyu. Priloahaniye, v. 3, no. 4, 1966, 173-177
TOPIC TAGSt neutron scattering, sodium chloridet potassium bromide,
single crystal, Gamma irradiation, crystal defect
ABSTRAM In view of W curt ent intjqreat in the scattering of
neutrons in irradiatad-J'ilkali-halide'l,dingle crystals, the authors
irradiated KBr and NaC1 single crystals with gamma rays from the In-Ga
radiation loop in the reactor of the Georgian Academy Physics Institute.
The dose rate was 0.8 X 106 r/hr. Before irradiation the crystal
was cooled and placed in the path of a monochromated beam of neutrons.
The resolution was 25% in terms of the wavelength, which ranged from
I to 12 1. The maximum background was 0.08 neut/cm2. The sample
thicknesses (6.3 mm for KBr and 2.2 mm for NaCI)were optimal from the
point of view of the procedure for measuring neutron transparency;
-Card-jj Z
f-ACC NR, AP6009716
the transmission was 0,6-0.9 in the indicated wavelength interval.
To suppress the inelastic scattering of neutrons by thermal lattice
vibrations, the experiment was carried out at liquid-air temperature.
The intensity of the neutron beam passing through the irradiated
crystal was compared with the intensity through the same crystal
prior to irradiation. NeKtron scattering maximum was observed at wave-
lengths between 5 a nd 8 , The height of the maximum increased in
proportion to'the irradiation time. A similar curve was obtained also
for 20 hours' exposure, but the measurement error was quite larges
The scattering of neutrons by defects in irradiated crystals is even
more strongly pronounced in NaCl crystals* The preliminary experi-
ments have shown that at wavelengths corresponding to the maximum on
the curve, the intencity of the neutrons scattered at an angle increasw
somewhat. To check whether the observed effect Is connected with the
occurrence of color centers in the irradiated single crystals of the
alkali-halide salt's, the concentration of F and M centers was measured
in the wavelength interval 220-1000 nm. It was found that the maximum
concentration of F-centers is 7 x 1017 cm-3, and the number o *f H centan
is much lower. Such small concentrations cannot explain the.observed
change in ndutron transmission, The authors thank Professor Yu6 M#
Kagan.for interest in the work and valuable discussions. Orig. art.
hasi 3 figurees 1021
SUB CODEs 20/ SUBM DATEs 03Jan66/ ORIG REF8 002/ ATD- PRESSI 14121Y
A - I
L 22116-66 94T(d)/M(I)/34T(m)/EPF(n)-2/9,7P(t) IJP(c) jDjAv1,7/GQ;
ACC NR: AP6004916 SOURCH 00DE1, UR/oo56/66/o5o/001/o046/0050
AUTHORS: Andronikashviii,, H. L.; Bablifte, R. A.; Tsakadze, Dzh.S.
ORG:* Institute of Physics, Academy of Sciences Georgian SSR
13
TITLE: Damping of second sound in rotating helium on going
through the phase transition-temerature
SOURCE: Zhurnal eksperimentallnoy i teoreticheskoy fiziki, v. 50,
no. 1, 1966, 46-50
TOPIC TAGS: liquid helium, quantum liquid., vortex, rotation, resonator,
sound propagation, relaxation process
ABSTRACT: The purpose'of the study was to investigate the fo .rmationl
of quantil~d Onsager-Funman vortices in rotat!-ng helium, which has j.
not been sufficiently studled to aate, particularly in those cases
when the vortices are formed in rotating helium going through the
phase-transition temperature. For the purpose of investigating the
kinetics of the vortex formation, the authors constructed aresonatoxi,
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L 22116-M
ACC NR: Ap6oo4gi6
in which second sound could propagate in a radial direction. A
second axial resonator was constructed, in which the second sound
could propagate along the axis of rotation. The experiments have
shown that in the Immediate vicinity of the phase transition point
the rotating helium II becomes foglike, as a result of uniform dis-
tribution of vortex nuc'ei. It Is deduced from the experiments that
initially there is forme-Ld an isotropic mass of vortex nuclei, which
gradually become aligned into a system of vortices oriented along
the axis of rotation. The relaxation times were measured for dif-
ferent rotating speeds and for different degrees of supercooling,
and it is concluded that the relaxation time of the classical type
of motion in a rapidly rotating quantum liquid Is of the same order
as the time of formation of the quantized Onsager-Feynman vortices
at large angular velocities. The authors thank Yu. G. Mamaladze
for a discussion of the results and N. S. Gavrilidi for be-1-p-w-ftb
the experiments. Orig. art. has: 4-figures and 1 formula.
SUB CODE: 20/ SUBM DATE-. 06Aug65/ ORIG REP: 003/ OTH REPt 001
Card 2/2
L 22117-66 IWT(1)/94T(m)/EEC,(k)-2/T/EWP(t)/EWP(k) IJP(c) WGIJD
ACC NR: AP6004917 SOURCE'CODE1 UR/0056/66/050/001/0051/0054
E. L a Oudzbabidze, 0. V.; Tsakadze,*.8__:'
AUTHORS: Andronikashvili
ORG: Institute of Physics Academy of Sciences Georgian SSSR
(Ins tifuPF-M"1kT-A'kademii n'auk Gruzinskoy SSR);; Tbilisi State 1019
Unlycr.-gi y (Thilisskiy gosudarstvennyy universitety--
13
.2 f
TITLE: Relaxation of the Onsager-Feynman vorticee when rotating
helium r1__Ts_1Te_a__ted above the phaue-tran8ition temperature
SOURCE: Zhurnal eksperimentallnoy i teoreticheskoy fiziki, v. 50,
no. 1, 1966, 51-54
TOPIC TAGS: liquid helium, quantum liquid, vortex, rotation, criti-
cal point, relaxation process, temperature dependence
ABSTRACT: The decay of vortex lines in the superfluid component of
rotating helium II, which occurs upon transition to helium 1, was
investigated by the oscillating disc method. Although 4.t was ex-
pected from theoretical oonsiderations that the vortex damping would
appear at the phase transition temperature., the experiments have
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ORIG REF: oo6/ OTH RkO: 002