SCIENTIFIC ABSTRACT KOCHARLI, SH. -

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000723420018-4
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: September 19, 2001
• Sequence Number: 18
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

~ I, ~; ; IL.J. 41, 5-~ -
StudyIng the electric conductivity of Akka petralmm oil# [is
Asertaijani with awwry In Awslan], Vab, sap, AM so,W"4
157e (NM Url)
(DaIm-Petral4m products) (ftectric oondmotIvIty)
(lubrication wA lubricants)

82050
Z-4 6 00 ~4 8/058/60/0(*/O-VOW030
1)
Translation from Referativayy zhurntl, Fis1ka, 1960, No. 3, P. 143, 4 5955
AVTRORSz 62SMVIIA-K. Sh., PSSW*Y, T. N.
TITLEt On the.DWootria EMvIvIos of Polymers
PMIODICALt Uch. zaje. Azerb. un-t. Fis.-sates. I khim. ser., 1.959, No. 2., pp.
59-64 (Azarbaydthan-f-anj Russian sumsary)
TMETs The results from experimental Inv4stigatIons of the di-eleotrlo
properties of 16 polymers of Isobutylene and Isosmyleno were presented, Tht
d1elootrical, constant 6 and the tangent of dieleotrical. loss angl,% tg Xwere
measured with the aid of a Q-meter within the frequsacy range of 1.5-12 Mej,
and the electric conductivity 6 was measured by a spocI&I gal-i9nometric dsvl^S.
All measurements were carried out withln tho tesparaluny rvigo frcin 20 to IM) C,
As a result of the investigation, the follcwing prellninwT :oaalustona can b,6
drawn. 1. The polymers of Isobutyleneland iiR~Mlenelari, basloslly nonpolar
polymers. only the I and 11 PoIjmers ok IsoanqlAne oan t-4 c=_#Idered as vsakly
polar polymers. 2. E of the polymers of lsobutyll~ne and in th* case
of low-frequency, does not depend an thA f-..qaonai4s. tr for some poly"re
Card 1/2 I,<

82050
4/058/60/OW/03/08/03D
On the Dislectrio Properties of Polymers
of Isobuty1we and laosaylone in the frequency rang of 5-10 No Is inversely
proportional to the frequency. 4. The dopendonas :f Or on tho Uw*rature for
the given polymers obeys the exponential law 6 - Sooxp (-a /T) Thus 9 door*aaeei
with an inareass, in the polymerisation do5rwo. in the 30AI-log'arItWo coordinate
system the males ISR. f (t) are a converS.Ing bundle of straight lines. The
temperature pertaining to the point of intersootion in 122 C.
Author's summary
Card 2/2

2ZINALLY, A.kh.; k(X
AJ4!~;,j K.Sh.; XMIUWI P.A.
Ipparatus for studying the phototffect, Uch, sap, AGU. Ser, fix,-mt,
I khim. nauk no.,099-W4 161. (KIRA 16 16)
(Photoelsetricity)

L IOOU-63
AOC03UM M A93WOY*
frequencies Os-go wcs In t~ft.t4ggp=%turO -nwqp 20-UO* C on specinew Pressed- at
a pressure of 200 ks. Per- ocLuare owtimeter., Tke ~Mlves of P-milm of system
OM w4 Tvo dd not- depend an the frequency siA are equal to TSS and U.63
respective4v the frequemW vexUUon of Ig Delta indicates that the losse, have
on oluic cbsractero With IncrawIng teepavature the losses incrous; the
temperature dependewe, of t4 Delta shown a role stlan =Lxlxm vh1cb., in +Jw cose
of system Tim is wasked by the tbode lossepj "A in the case of the system Three
Is clearly pranounceds Tbo r*U=Wr aetbatlon mergy c4lcvlated fr(a the
frequency shift of the temWersturs peak of the Imses of system Three Is equal
to 0,41 ev. The ratue of -the-ralaxator Is, not soft clear. V. lAzovskit-
DATE AOQ: ~ 14MILY63 - XNCLs 00 WD CMt PH

5/058/63/000/002/047/070
A1601AI01
AIMOR3: Bazdetnyy, R. M., Zeyn&lly. A. Kh.
TIMs An investigation of some photoelectric propertias of silicon
single crystals with the help of +Ae microradlowave technique
PERIODICALi Referativnyy thurnal, Pizika, no. V, 1963, 77, abstract 2E521
("Uch, zap. Azerb. un-t. Ser. fix.-matem. I kh1m. n.", no. 4, 1961,
89 - 93)
TEXT: By the method of radio wave absorption in the frequency range of
8.6 19.6 kilo-megahertz, an investigation was carried out of the spectral and
,Qampere characteristic of the natural photoconluctivity (for a light with a
wavelength of 0.2 to 1.2,u) in a n - si single crystal with a specific resistmve
of 40 ohn-cm and a carriers life time of 40 - 60,useo at room temperature. It
was established that the luxampere characteristi3s are linear for a light with a
wavelength or 1.0, 1.1 and 1,15 ps The authors onplain that this Is duo to the
high dark concentration of free cavriers in compirlson to the concentratlons of
recombination centers. It was established that *:he maxlmuc of the spectral
Card 1/2

3/058/63,/OW/OOZ/047/070
An Investigation of some.... A1601AI01
characteristic of the natural photoconductivity of the monoceystalline Si is to
be found at *,wavelength of 1.1
Yu. Ukhancv
[Abstracter's notes Complete translation)
Card 2/2

ll~ rK i---------
IDN 14R- ATS018032 III PJ 03 3 0007
AUTHOR: A~.Kh. ~*Ielr 'kly G. L,,
TITM The onvrgy structure of antloony-so-I snide
SIXJT4C'Z: Pzku. AlcrbajtdZbaqa~lr laudar a bm--tur- trSuz-fttt ~ftjjj.
kh nau~.
-,'r'rC TAGS., antiwjuv Selefdds, mn._t
01 4 c, v tw tal
A[~:,TPACT: The purpmv* nf this 4r+-4-!:-~ Vase t-~ 1"4--t-lintt Svieutra ET dig
n AaSes. The invanti-g-at Lnn i vr, I va 1 r-,t
u
J 1. ~3 t, AI? - tv-De crlr-L~a u I I v
aye,

1 ttt-
taptaki-Ag-1, No. 37 115
' -?I~'
OT q Sl>eCif---ri9 "Ii-~ ~T 1-~~
q Wort, -riq VIjitl C)f
0- caicu latild f r~~n '.!-Ie & ~~p ~a
card 1/2
-torl war.
' - r-cA a 5war
va ~Iup
in the

ACCESSION MR: AT5018032
:natural cenductivity regim. Th* L"rity levels with tht en~!
gy --ovels. were determinedl
'T1 t 0-017 *V' g2 ff 0-10 "' 9~i V 0.3 ev, E4 r 0.53 ev.
The calculated capturo cross soctl*n for thi leval 4, whir-h f* c-cqt-s1A4teL4
I*i Ln,--ip-aA reconhination level, was found to be S 10-18 cT,2. Drig. art. Mal
. I i g-u r-4~~ a .

SUSMITTFD! WarWt
-RTF ;0V: 006
ENCL - )0
OTHM 001
SUT CODE
card "2/2

L 17i"-6-5 rXT(mI/ZO(0/WP(b)
ES D(gaTFOOD(OASDOV) RDW/Jo
ACCEM-IN Mto AIMU22A
SOURCE- Ref. zh. Kbimlys. Abs. 160164
lhaml
R
AUTHOR; &gksrll. K., Sul
TITLE, A atudy of the dependence d-thie, dielectric? emattnt on temperiture, and frecrueacy-
4 - .. .. - - t- -..I rIA- .-A .-I -AA-

CITED SOURCE: Uch. up. Alerb. tu-t, Sor. fit.-matem. n., no 4, 1963, 91-91
TP~GR- troemle MemW, diek.'etric eansf-wl. sm-nic sullftAde. 6 Wepetrf-c
A;--,.,,. TION. -no audmus raeagured the deDt-meence a~ tllm dfellr-rl~rf-- cormt=t Im.
&M" J4~A not rip
ma-A AO ~,Sj kn I requency aM temperaturc. in An
-n (rf It incr"aAes rom 6 2 to 9 1
-4pienev &( rom temperacurth (for I to 2:1 Mc)
Ki
--s-rnporature rint-to from 2-5 Lo ISOC For tb P r an-gv f.-nm .5 0 kc 2 0 M 6 4 ill
a X I T 4. a I j e if
1,2. , mievmcient cif froqumcv at r, nr to7 ~,r- r i,

Catd

1MATLGVj X.A.1 KOCKARL1. Sh.So
1-1 ...... ~ '1_11:11--4
We of the pLUontological factor In oil and gas formation in the
lower part of the Kura Lowland. Geol. nerti I gau 9 no.8il-5 AC
16% (MMA 1818)
1. Institut geologii AN AserSSR.

maxA,- v - I- d
A-
"H*at ln$UlatlA9 Flbers :trf= B"<," Staklo I y
1954. Orudks, 2, no. 9, pp 9 -12,
Translatlon M-701, 19 Aug 55

S S' R
Y4 A c r
L kat
--j 6,4 I~An (h,
"S01
41

SMLINIZDV. Ts,A., kande tokhn, nauki WCUM, Xo?.. lush.
Ifflolent motbods for ObWsdng high-quallty alneral-wool hoat md
found InsulatIng produotoo Strol. mt, 5 no.67-20 Jo 159.
(Insulating materials) Wosral wool) (NIn 12M

8/072/60/000/009/001/007
1021/B056
AUTOORSt Shkol'nikovt Ta.-A-0 tacharov, 2. P.
IF -
TITL& the Manufacture ot-Relt- and Oquad-Insulating Materials
,From Glass Staple fiber Ngst be Zzpand~4
PERIODICALs Steklo I korwdks, 1960, go. 9, pp. 1-5
TZXTt -the experimental technological production line for the production
of glass fibers by means of the vertical 0eam-blowing method and far
processing the fiber into beat- and sound-insulating satertals is to be
considered the technical basis of the dovelopment envisaged in the
Seven-year Plan. The scheme of such a production line installed at the
Werefyanskly stokollnyy savod (Nerota Glasovarks) is shown in Pig. 1.
The glass mass leaving a spinnef-st forms WT-N~W fibers under the action
of superheated flowing *team. A production line for processing the glass
staple fiber Into finished products was built 'by the mashinostroitalln.y3
sayod Iseni Karla, Marks& (Maebine-buildinx FuctolZineni Karl Marx).
Uperisents at the Institut stoklovolokne (Instiluts for 41ses liber
showed that it is preferable to use a shuttle-type, electrically heated
Card 1/3

The Manufacture of Beat- and Bound-insulating 8/072/60/000/009/001/007
Materials From glass Staple 71tor Must Be B021/bO58
ftpandod
apinnerot Instead of a platelikt one (fig. 2). The steam nossl* of the
typ*TBI~ (nrs)(Fig. 3) was also developed. The resin acting an binding
agent is Introduced by means of atoalsors. the formation of rigid
plates In the drying- and polymerization chamber Is shown in Fig. 4. The
Institute for Glass Fiber jointly with the design office of the Factory
Imeal Xarl Varx and the institut 01prostroyindustriya (State Institute
for the Design and Planning of Istablishaents of the Construction
Industry) are conduoting experiments for the purpose of establishing,
a a
plant for theautonatic pasting-on of4f brics. The fabric is posted on
by a &no of pbonol-formaldebgdo resin. The fiber Is produced from glass
No. N, as developed by the fis No-khtalohooksys, laboratorlys. (physiao-
chooloal Laboratory) of the Inatitutelbr Glass Fiber. The temperature
dependence of the viscosity of glasses of varying composition -is shown
I Fig 5. Syntbotio
n /phonol-formaldshyde resins of the types B (D),
P-2) as wall as urea formaldehyde of the type
are used as binding agents for the manufacture of plates.
The output of a plant averages I t daily. The sayod imonl Likhachava
(Plant Imeni Likhaohov) (household refrigerators) and the shipbuilding In-
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The-lanutaoture of Rest- and Bound-insulating 8/072J60/000/009/001/007
Xaterials from Glass Staple, 11bor Must Do B0211DO58
Expanded
dustry are Indicated as being the main consumers of those products. The
Oiprostoklo Institute and the SUto Institute for tbe-postiM and PlIgning
of Establishments of the Construction Industry elaborated typifild
projects of plants w1tb an annual output of 50,000 and 100,000 a of
products, the first of which are to be taken Into operation in 1961.
Beat- and sound-insulatIng products made of staple fiber should be
manufactured by glassworks situated close to consumer s,roast owing to the
difficultly of their transportation. There are 5 figures.
Card 3/3

88230
is'.1001D
8/072/60/000/008/007/007/Xl
2021/BO54
AUTHORs loch rove 1:4 P.
TITM News About Xast-German Oloss Fiber Production
PERIODICILt Staklo, i keramikat 1960,1.110* St pp. 40 - 44
TEXTs The following glass fiber products are asationeda Class-reinforced
plastics in shestso Glakrosits An aqueous starch solution is sprayed an the
glass fabrial and dried in a drying chamber -at 90-1100C. Yurth*rg resin and
plaster are applied*to the glass fabric on an assembly line. The resulting
glass-roinforood sheet plastics are sorted, and sawn to required dimensions.
The finished shoots consist of 40% glass fiber, 45% resin, a" 15f, plaster.
The specific gravity of,01skresit to 0.95-1.2 g/cm3, the banding strength
at 2 am thickness is 890 kc/on2# the tearing strength Is 200-500 kg/en2
the impact strength 9.50 kc-cm/ca2j and the elasticity modulus
2
E - 5,000-6,000 kg/ca . Class mats ars produced on an assembly line. Class
Card 1/3

88230
News About last-German Class Fiber 3/072j6O/OOO/OO8/007/007/XX
Production D021/DO54
fiber fabrics are treated with polyvinyl acetate emulsion, and dried. The
tearing strength of glass mate in the Ungitudinal direction at 50-an width
and I an thickness to 15 kg. The capacity of an assembly line is 5,000 N2
a day. An experimental plant for the production of glass fiber souirayon
comprises a alting.doiloo for glass rods, and two centrifuges. The yarn
consists of ;0% lone fibers and 50% staple fibers. Somirayon van be used
for the production of incombustible decoration material, hoot and electric
insulating materialt and &aid-r*sisting filters. Further, the author
briefly describes an experinental.plant for the production of textile
fibers from glass rods, The fiber diameter Is 9p# the capacity of the
plant 3 kg per 8 hours. 11#otroinsulating fabrics more made of this fiber.
The production of textile fibsrs by mechanical drowing from spinnersts Is
carried out by moons of platinum rhodius glass melting crucibles having
WO, 200, and 250 spinnortto 1.6 an In diameter. An experimental plant for
the production of superfine fibers -(3p) operates with gloving gave* by
which the molten glass is blown Into threads. Sup*rfinefiber products can
be used as filters, Uporimental plants for the production of staple fibers
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88230
News lbout tast-Ooraan Glass Fiber 8/072/60/000/008/007/007/Xl
Production B020054
for heat insulation operate by moans of fiber stretching by a vapor current.
The fiber Is 14-15;1 thick. The plant consists -of an electric furnace with
platinum rhodium crucible for glass melting, a blowing Oov1cs# a fiber-
forming chamber, a auction chamber, and an assombljy line. There are
5 figures.
Card 3/3

$10261621000100310061006
D055/D113
AUTHORs
TITLEv Now hoat-insuletion
PERIODICILt Priroda, no. 3, 1962, 109-111
TEXTs The author describes the uses of glites fiber as an insulating mete-
rial, its advantages over other insulators and its method of production
In the USSR. In the VSS~ glass fiber Is produced by a method developed at
the Institut steklavolokne, (Institute of Olase Fiber) by a croup of scien-
tists headed by Ya.A. Shkollnikov. The uniform glass mass enters a feeder
in the front part of the furnace. It pass4s through a spinneret in the
form of a platinum plate heated by electric current In the bottom of the
feeder. The threads of molten glass leaving the spinneret are exposed to LOOO
a powerful current of superheated steam or compressed air which separates
and accelerates smaller threads from the main onso Thanks to the viscous
properties of the glass zass they do not be*oze detached from the zain
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New--heat-insulation
3102,111521000100310061006
D0557M'13
thread and in notion form -thin glass fib*rso Thes* then enter a vertical
chamber where they are impregnated by a spray of synthetic resin. The layer
of fiber then enters a conveyor unit where It is -condensed# the resin -
polymerized and the material Clued to backing,, There are 6 figures.
ASSOCIATIONt V oyusnyl nauchno-looledovatel'skiy inatitut stoklymmogo
T:01:kna(Mookya) (All-Union S.Lentific Research Institute for
Glass Fiber (110scow).
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h3316
3/02~6/62/000/012/004/007
15. )'Nx'5 D036/D114
AUTHORt KochArov, E.P.
TITLEt Ultrafine clasa fiber
PERIODICALt Priroda, no. 12, 1962# 94-95
TEXTs The proportion and applications of ultr%fine glass.fiberare
deacribod. Thin fiber to 0.4-1.0/" in diameterv bas a volumetric weight
of about 5 kg/m3, and a sound-aboorption fadtor of 0.9 for 512 cps sound.
It has the lowest heat conduction factor of tll beat-insulating materials,
in noninflammable, chemically stable anddoes not uhrink under vibration.
It can be used to make wool which can filter out particles one millionth of
a millimeter in diameter (radioactive aoroso:'.sj etc*)* Such wool can be
aloo,used to make 20-25-tA -thick glass paper for Insulating electrical
cqtdpment. The fiber Is produced by a technique developed by T&A. Shkoll-
nikov, B.M, Polikt N.G# Knrakhanidif P.K. lysnov and others of the authorts
.Institute. In thin technique# 100-200/w pritary glass fibers are-drawn out
of an electric platinum-rhodium Class-meltini, furnace Into a hiah-volocity
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3/026/62/000/012/004/007
Ultr.1fine Claun fiber D036/D114
high-temperature stroam of incandescent Cases which breaks them down into
ceparati elements which are then brawn into rery thin, short, fibers.,
These fibers are precipitated onto a metal C:14 in the form of fabric which
in impregnated with synthetic resin and fed into a drying and polymerization
cbamber. Thin aluminum foil or an organic film is then stuck on to the
mats, whose volumetric veiCht is between 7 and 12 kg/m3.
ASSOCIATION Vaecoyuznyy nauchno-issledovatol'skiy Inotitut steklyannogo
volokna (Arl-Union Scientific Research Inst-Itute of Glass
Fibers), Moscow
Card 212

KOCHARDV W* insbq SHKOLINIKOVO la.A.,p k&W.tekhn.n&uk
C7~~~
Heat-Insulating shells mde of glame.staplo fiber. Stroiazat. 8
mo7sl8-20 Jl 162, (MIRA 150)
(Insillation (Heat)) (Olass fibers)

KOCHAROVt E.P.
New ibermisolation. Priroda 51 no.3:109-lU Mr 162.
(x1ju 15, 3)
1, YsesoyuzW nsuabroo-issledovaullskly institut steklvannogo
vololm, Moskva. (Olass fibers)

MHAROV We
Mtmfino iWo ftbar. PMrW& 51 no.1219445 D 062. (UM 15112)
Is YeesoyuM safto-l"Isdantol I okiy institut st*lysmogo
voloknal Noskm (Ca"s f1bom)

SRWIolXIMv Y4LAsp kMW#t43ftpuft*j KOCHAROVO Z.Pl.t inab,
I
fnbwglmm bdUln aRterialle bV T.M.Urblkrin& M P~Slmkbcvp
I.I.Shablals V. Radowed tw U.A.M*011sikovo I.P:zoawwo*.
Stak.1 kor. 19 to.3148 N 062. (=A 1012)
(01"s fibm) dulas valmrI&IS)
(Darbarinai T.M.) (Sukhavol.r.) j LAJ

ijARBAuDIAO T.M.; IJUBYR'p N.F.1 BUTT, L.E.; VlL%k-V-';YIY, V.1f.;
GORLOV, Yu.P.1 GRIBANOVSKIT, V.G.j -)ROZDOVv I.Ya.)
URWIlis I.A., Z&Mip V.0.1 KEVEM, P.D.1 B P.;
KOSYREVA, Z.S.; LICVI?lv S.N.j YAMONICII, A-- , 9ERID"Flikil
A.N.1 RODOV, 9.8,1 ROZHNOVO A.I.; SCREBRYANSKAYA, 8.1.1
SUKHAMO M.F.1 USMKOp A.A.; KIICF'!ZiKO, 3.5.1 SHMIDT,
L.Mol &TVI, A,O.; TAKWNTOVA, N.Yeel KITAYISR, Vladir4r
Andreyevich, prof., doktAr takhn. niukp md.; I-jUAMTAYNVp
B.G.P glav. red.j TROKHlNDVSKAYA, I.P.,, aam. glav. red.;
KRAVCH121KOp I.V., red.; KITIJGORODS(IY, I.I., red.;
KRZMINSKIT, S.A., red.1 ROKIMUIG91, Ye.L,v red.;BALATITEV,P.N.
red.
(Manual on the manufacture of -beat lnsula-.ine and ncous-
tical materialal Spravochnik po prolzvodstvu teplolzo-
liatsionrqkb i akusticheakikh materLalovo Floskmal Stroi-
lzdatj 1964, 524 P, (1111RA 18i1)

r cx;i I Allq,-41VA
Simplifted tormula ror calrulating gathering netuorks.
Neft.'kho&. 41 no. 12s45-48 1) 163. OURA 11%6)

J_
r/ J 120-6-16/36
1 JTFORSt Bochagov, B.A., Kochanv, 246-Land Kirshin, G.F.
TITLE: An Improvement in the-linergy Rtsolution of the Ionisation
Chamber with a Grid (UluchshenJjs rasresbayushchey.sposob-
nosti po energii inpul'snoy ioiLizatuionnoy kamery a setkoy)
PEMODICAL: Pribory i Tekhnika Sksperimonta, 1957, No.61
m ' pp - 72 - 74 ? USM)
ABSTRAM The main factors are considerod which have an effect on
the energy resolution of an ionisalion chamber containing a
grid. As is known, the.preaence ol even a small impurity of
gases such as oxygen water vapour, sto. considerably worsen the
energy resolution& 4b clean up th,s as.a sodium "filterw was
used. The:clean-up took about 2 t) I hours. By a suitable
choice of the first-valve of the &uplifier, and by suitable
matching, the RMS value of t9e noise was reduced to!6.8 keV,
which is.loss-by 3#2 keV than that quoted in Ref.4. It is
shown that the Soviet valve 6* In bas better noise properties
than the American valve 6AX5. The signal-to-noise ratio depends
on the pass band of the wVlifier to well as the characteristics
of the first valve. To obtain a maxilmum signal-to-noise ratio,
it is -necessary to use valves having a small grid current an
well as very curved characteristics. The energy spectrum of
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a ~Nuclear/Physi~ Structure and Properties of Nuclei c-4
Abe Jour : Hof Zhur. Mikap No lp 1958.. 473
Author : Bachagovp B.A.p Komar, A.P.; Nocharov, O.Yo.
. . ........................................
Inst : Leningrad Physical-Technical Institute, Academy of
Sciences) USSR,
Title : Fine Structure of ot Spectra of 1?34 and U238.
Orig Pub : Zho eksperim. I toor. fizikip 1957, 32) No 5, 1257-1259
Abstract : A study-Vag mad 3gf the energy spe:trum of A particles
from U4-14 and Z$ with the aid of a pulsed Ionization
cha er, havinga high transaissioi and improved resolu-
tion. The source employed was a natural mixture of ura-
nium isotopes. The spectra obtained in both cases have
shown clearly the additional preseace or a group of A
particles corresponding to the transition to the first
rotational level of the daughter nucleus, along with the
Card 1/2
USSR/Nuclear Physics Structure and Properties of Nuclei C-4
Abe Jour Her Zhur - Fizika, No 1, 1958, 47.~j
:
Z 4.135 Xov for A, The intermities of the lines
amount to 72 and 20% in the formar- case, and their ratio
of 4 in the latter case. An anal)*is of the spectra has
shown the presence of intermediate groups of somenta,
located between the fundamental line and the fine-struc.
ture line) and having an energy eq~usl to the energy of
the o( particles of the fine structure and the energy of
the conversion electrons that are emitted frou the L
shell of the atom after the emission of an N particle.
fA-dm ntal group of m particles. The energy of the
fl-dsmental line and the line of the ftpe structure
.re respectively 4 and 4-72 X*A- for UJ" and 4.18
Card 2/2
TITU: Thin Isarge Area OL-Active Sour;es (Tonkiye a-Aktivnyye
istochniki bol'shoy ploshchadL)
_1,R1OD1CkL:Pribory i tekhnika eksperimontal 1958, IsTr 5, PP 108-109
(USSR)

GOT/48-22-7-13/26
AUTHORS: Komar, A. P., Korolev# G# A*, Kocharov, Go Too
TITLE: Investigation of the Lower Excited Th 230 Levels by Usans of
(1-9 KCoinaidenoon (Ituchon:.yo n1zhnW VoZW6hd4XLV4&'h
urovney Th 230 Putem 0-0 X_ novpadenly)
P'-MIODICAL: Izveattya Akademil nauk 5530, Serlya fiz1cheskaya# 1959t
Vol. 22, Nr 7, Pp. 824-826 (usn)
ABSTRACT: Anapparatus for recording th 0.0 K coincidences was built
by the authors* It conalsta :f a pulee Ionization chamber
Into which a proportional countor for recording the conver-
sion electrons is placed, With this equipment the a-spectrum
of U:134 was examined with respect to coincidences with the
conversion electrons, The a,pDnratue is described* Suppression
of noise from random a-a coincidences is provided for in
the radio unit. During 24 hours the Instability of theyhole
radio unit was leas than Op2 IA;f-T$ wnP.ex3V%ed9 there wore
no main giaups of a-particles an U in the a-sp*c-
trum 7 f it T group correspunus to %ne fransition to
' ' fhe o"'daughter nucleus. From an analysis of
err*-i-,4-y- the 2 l(UW" 0 th
4p,4

23o 3OV/48-22-7-13/26
Investigation of. the Lower Excited Th Levels by Means of a-*K Coinoidono*s
t~e curve obtained# the Inten aity of the transition to the
4 level can be determined. It 180035 .1 0,15 fil(the Intonsi-
ty of th a group being considered as known) . he level
energy 1: 110 W. an results also from the goneralistd
nuclear model. It can 4astumad that the+55 k9V y-quenta
correspond to the transition from the 2 to the groundlevel#
while thosk having 118 koV correspond t7 one from the 4 to
the 2* loyal, The transition from the 4 to the ground level
has not been observed until now although it is not impossibloo
With the use of the theoretical values of the conversion co-'
efficient for the K and L shells (Refs 10, 11),and of the
experimental values for the r tic NY;53/NY.1j8 * 2t5# the
intensity of the transition t: the 4 1-vAl !tn be datermln,%4.
Its value coincides with the exp*riment:1 value of Ot35 ~. -
The authors acknowledge the advice of B. A. Boahagov and go No
Rikolayev.'Thero are 3 figures and 11 reforenooss 8 of which
are Soviet.

AUTHORS: Kcm--ir, A. ?.t Korolev, G. A~j SOY/56-34-5-54/61
Kocharov, G. Te.
TITLE: )Levels of Th'34
Infe~rior E~xcited (Rotation
(0 niz'hnikh voz-
buzhdonnykh (rotatsionnykh urovnyRkh Th234
~
)
PERIODICAL: Zhurnal okeperimentallnoy i teoreticneskoy fiziki, 1958#
Vol- 34, Hr 5t PP- 134LJ - 1346 (USSR)
ABSTRACT: By means of an ionisation chamber with a i;ril (Ref 1) the
authors Investifgated the energy spectrum of the a-particles from
230
'U . The spectrum obtained this way is given In a figure. In
this figure a
denotes the main group of the a-particles from
0
U238 with an energy of 4#182 MeY. According to the opinion of
the authors the group a2 correeponds with the transition to the
second level of Th234 .The intensity of this transition is
0#25 + OP4. The level in located lilt - 160 KeY. The ratio of
the energies of the first and second level aerees with the
theoretical value obtained on the baols of the simplified nuclear
model. This level probably is the 44 one. The group a I corresponds

Inferior Nxcited (Rotation-)Levels of Th234 BOV/56-34-5~-54/61
with the transition to the level + 2 of the daughter nueleue.
'The transition to the level +2 ;occurs with an intensity of
23%. This value of the intensity w;ll agrees with the res '6Aa
of various previous works (Refs 2- ). The scheme of the U -
decay, constructed on the basis of the results of this paper,
is given in a diagram. At prenent more mearurements concerning
a better separation of the group a. ire performed which will
render possible a more accurate precision of the results obtained
here. There are 2 figures and 5 refe.retices4 I of which is Soviet.
ASSOCIATION: Leninersdakiy fi%1ko-tekhnicheskiy inatitut Akademil nauk SSSH
(Leningrad Lwtltate of "14s 4jA Tecbmlogy,AS LSSR)
SUBLIMED: February 20, 1958

24M 807/48-23-7-15/31
AUTRORSt -Zooharov, 0~ Tool Komar$ A, ?.I Korolsvqgo Ael Marov, It L#
-rkoV9 Yu. A.
TITLEs The rine Structure of the oL-Spectrun of Th 229
(Tonkaya strukturs OC-spektra Th 229)
PZRIODICALs rsysetiya Akadomii asuk BOSR~ Borlya fisichookayat 1959p
Vol 23, Nr 7, PP 855-858 (USSR)
ABSTRAM The radloaotivo isotope Th 229 Is obtained by the *.F-d*oar of
U2331 an -the half-life of the latter In 1,6211 0. that of 'Th229
howeverl only 7,000 years, a largo quantity of U233 is nsogssa~
for'the exact determination of the aotivity of the isotope
Th 229 , A paper (Rat 1) is mentioned in which the cie-deoxy of
this isotope was inventigatedp but It did not deliver satis-
factory results duo to a poor resolving power. The present
Investigation was carried out with an ioalsation-oC-spoot"notor
of high resolving powert and the chemical production of the
isotope from oxides of the isotope 0 233 in described in detail.
Card 1/2 Theisotops U233 investigated by the authors contains -

The Fine Structure of the oC-Speotrum of Th 229 SOY/48-23-7ftl5/31
229 228
besides the Isotope Th . also Tb I the energies of tbo
unknown &C-lines were determined from the well-known aC-llnes
of Tb 228 and its daughter nuclei. The energy of -the principal
group-of the W-partioles was determined by several measurements
at 5040 kev, the determination of the energy of the other
04-groups was carried out by electric collimationsA table
contains-the energies determined by the authors and the relatlys
intensities of the lines of the isotope Th 229 t and figure
shows a &chose of its decay, The authors thank let As
Damaskinakiy of the LP1 Imeni Kalinin for his help in this
works There are 5 f1gurest 1 table# and 8 references$ 6 of whioh
are Soviets
ASSOCIATIONt Fisiko-tekbnicheskly Institut Akedeall nauk BOOR (Ph $1000
toohALoal Institute of the Aoadomy of sciences$ V8825
Card 2/2

21(8)
AUTHOR i Koch
ftt2_Tj Q. TO-s Komar, A. P., SOY/36-36-1-11/62
qrO_ro1_~_V,_ _0717~
TITLEs Energy Spectra of a( -Particles of Long Th 232 and 0 238
Isotopes (EnergstAq
,Dsskiy2*,g39ktry.OC .-otiastits dolgothivush-
v Th'. t U
ohikh i
ot
s
opo
PERIODICJLt Zhurnal eksperimentallnoy I toor*ticheskoy ftsiki, 1959#
Vol 36, Nr It pp 68-75 (USSR)
AMSTRAM Investigation of ad -spectra fine structure makes it possible
to investigate the weakly-exoited states of heavy nuclei as
well as the determination of several parameters of nuclear
structure. to the magnetic spectrometers otherwise used ar#
not st,tt~A for fine-structure Invoitigations of(x -spectra of
long-life Isotopes beasuso of their low light Intensityg and
as tho usual Iontlation chambers furnish a half-wtdth.of lines
of onlyv5O k~Vj the authors endeavored to produce a device
having a better resolving poter, In 1955 and 1956 they develop-
ed an ionisation chamber in their laboratory, which had a grtd
for an Od-line half-width of 30 k9V (Refs 1-4)p with the help
of which it was possible to carry out an Investigation of the
Card 1/4 fine structure of the C4 -speo tra of Th232 and U258. The present

Energy Spectra of 0e -Particles of Long- 7"'s Th 232 soy/56-36-i-ii/62
and U238 Isotopes
papet gives a very detailed description of the device and of
its mods of operation. The following was Investigateds
1) The OC -transition to the firal #xoited level of the
daughter-auclot of 9&228 and Th254. Figure 4 shows the
ot-spectrum of 232 (measuring time 25 hours), and figure 5
shows that of Une 0 .5 hours). For the former an Oti-intensity
of 03e is given, as well as an energy of thefirst level
of (60j5,) k9V# for V238 an oil -intensity of (23+4) It and an
energy of the corresponding level of (48�0 ke-V.
2),Igan:ition to the second level of the daughter nuclei of
Ra a d Th234# Figure 6 shows N(E) for Th232 (measuring
time 90 hours)* Owing to the great light intensity and the
good resolving power of the Ionization chAmb r, the spectrum
shows distinct peaks f ol (2*) and 0f,04 ). ;Igure 7 shows a
similar spectrum for 058 ~30 h)s -The following data are givene
Rnm of the second level (185�5) k 'IV, Intensity (0.2�9-08)
, respectivoir.
an 60+5) k9V Intensity (O.23�0.07)
A comparison between experimental data and those calculated by
Card 2/4 Nosov Oaf 17) and Komar et &I (Ref18) shows good agreement

Energy Spectra of (x -Particle@ of Long4-ife Th 232 SOV/56-36-1-11/62
and U238 Isotopes
(see table). In oonclusio~~.the following decay schemes are
suggested for Th232 and U I
0 Th 232 0+ U239
4 4+ L-4a-6-
0'
2+
0 toy 0 ev
In conclusion, the authors thank Yu. A. Surkov for placing
the thorium sources at their disposal, V. G. Nosov for dis-
oussions and for placing the manuscript of his paper at their
disposal# and they further *%probe their gratitude to
Card 3/4

Energy Spectra of CY-Partioles of 'Long-Life Th 232 SOV/56-36-1-11/62
and U 238 Isotopes
Ye. A. Damaskidekly for his assistance and to V. A. Kiroyov
and,S. 9. Nikolayev for their advice. There are 8 figures,
I tablet and 21 references, 10 of which are Soviet.
ASSOCIATIONt Laningradskly fiziko-toUnichookly ingtitut Akadexii nauk SSSR
(Leningrad Ph~sioo-Tschntcal Institute of the Academy of
Sciences USSR
SUBUITTEDt August 80 1958
Card 4/4

KOCHAROV, G. Ye., Cand Phys-Hath Sci -- (diss) "Investigation of arc-
spectra of uranium and thorium isotopes by an ionization arc-opectro-
meter at high resolution " Leningrad, 1960. 9 pp; (Academy of Sciences
USSR Radium Inst im Khl;pin).; 250 copies; free; bibliography on pages
8-9 ,?16 entries); (KLt 17-60, 139)

0
AUTHORS:
TITLI:
PniODICAL:
8/048/60/024/03/14/()19
DoWao14
KooharoT'__00 Yost Yamshchikov,-X. At
The Ionisation CMabor*10 the gnetic Field
-if
Isvestiya Akadeall nm~t SM. S-erlys. fisloheskaya,
Vol. 24, go* 3# YP* 350-356
1960p
TZXT: The article under review was read at the Tenth All-Vnion Confer-
once of Nuclear Speotroscopyi(Mosoov, JanuajZ 19, - 2L 15 Pulsed
MISS,%lon Oftanbers are frequently used for investigating nuclear
reactions and a-speatra of small isotope amounts* Proportional counter*
placed in the chamber are used to record conversion electrons
(ooincidenoo measurement of a-particlom and conversion olootrons). To
improve energy resolution, to enlarge the energy range# and to reduce
the background of soft elsotrons# the proportional counter is arranged
in a magnetic field such that, *.g.9 the a - aK coincidence recording
takes place In a magnetic field* In this oonneotiont an investigation
of the influence exerted by the magnetic field upon the ohaab*r operation
Card 1/3 L4/

500 . 3
The Ionization Chamber in the Kagnetle 3/04SJ60/024/03/14/019
Field B006/BO14
Is of intor9stg as a knowledge of thou Is necessary for the proper
selection of the size and mode of operation of the *bomber. The als of
the Authors was to conduct such an investigation. The Influence
exercised by the nagnotio field on the electronic apparatus Is briefly
discussed first. kft*r screening off the tubes In the preampl1flor and
removing the remaining parts of the apparatus by 3-m from the magnet#
a test proved that then the magnet was switched on, the amplitude
remained unchanged up to 0,05%. The Influence exerted bytho field an
the trajectories of the Ionization electrons Is Investigated next* It
is shown that the field gives rise to a drift of electrons (Fig. 2*/p
thatp howevorp the amplitude of the pulse hitting the high-voltage,
ol*otrod* to not Influenced thereby. for is the Amplitude Influenced
by electrons gathering on the chamber walls. The -influence exerted by
the magnetic field on conversion electrons when a-speotra or* taken
in discussed in the next section. As may be soon from Figs. 8 and 9
(they show the computed and the measured a-spoctrum of V234 with and
without magnetic fields theory shove a rise in the Intensity of the
al-group In the presence of a magnetic field, which foot Is
Card 2/3

The Ionization Chanber In the Magnetic S/04SJ60/024/03/14/019
Yield B006/BO14
substantiated by exptristats.-In losizationg-s-partioles also produce
fast# so-called S-olso-tron besides slow electrons# whose saximm
energy (in 5-Mev a-partiale:$ anounts to 2#5 kov. The Influence exerted
'by a aagnetio field on such particle* 'is briefly studied 'in the last
section, and the Influence of the field an I-elsotrons is found to be
negligiblts It is-stated In conclusion that with a proper selection of
the else In& the working conditions of the, chamberp the "gastic f Iold
does not Aifluence the revolution of the devla*q but that# on the other
handp It Is ompablo.of reducing the,offoot of oon-version electrons. The
authors finally thank A, Po Ko"r for his assistance. There are
figures and 6 references, 3 of which are Soviet.
ASSOCIATION: Flatko-tekhnioheskly Institut Ak&4*ali mauk 8832
(Institute of lbysice and Toohnoloa of the-Acadoal of
solono*sf USBRY
Card 3/3

J9'/ 5;2 0 0
AUTHORS%
TITLN:
PZRIODICAL:
8/04SJ60/024/03/15/019
DW/BO14
lorolev, GOA&P xoah&rov6 00 Yoo
Investigation of Pulses Oeaurring on the Grid of an
1ronleation Chaubir 11
Isvestiya Mmasail nauk SSSR. Beriya fisicheskayap 1960#
Vol. 24t No. 3p PP- 357-364
TnT: The article under review was read at the
once on Nuclear 3qoQ1t'rQ$oQDY_jKoso0ws JaMr.Y 19 - Us 1960) TIM use
of shielding grids In pulsed ionization chamber* makes it necessary to
study the grid pulses. The problem of the shape of pulses from the
collecting and fro* the high-voltage electrode and the proper oholoo, of
the amplifier transmission band have already boon studied in Refs. )
and 4. A maximum signal-to-noise ratio was given as basic criterion for
the selection of transmission bands. In the present paper, the authors
show that In the *as* of grid pulses the most favorable transmission
band is primarily determined by the condition of conservation of the
angular distribution function. Firstp the authors Investigate &r
Card 1/3

Investigation of?ulses occurring on the
Grid of an Ionisation Chamber
8/046J60/024/03/15/019
B666/bm
ionis%tion chamber with two gridep and.the shape of voltage pulses Is
studied on the first grld.~It to assumed that no diffusion of the
"electron track" -takes place# that the density of Ionisation along the
alpha track In constant# and that no electro.negativs Impurities exist
in the gas of the chamber.* The chamber is schematically represented In
Fig. it und-Fig. 2 shown grid pulses. A number of formula# representing
the grid potentials as functions of different variables are then
derived. Nextq the authors describe a theoretical study of the proper
selection of transmission bands for operations with negative grid
pulses. They investigate the effect of diffusion upon negative grid
pulses, and the last station briefly deals with positive grid pulses
(due to positive ions). In-conolusiont-it'is stated that the following
conditions must be satisfied for the use of negative grid pulses for
angular measurements: The chamber must:be filled with a gas having a
emall diffusion coefficients It Is necessary to us* transmission bands
by which the angular distribution Is not distorted. In order to
guarantee exactangular distribution in the a&** of positive grid
pule9so it In necessary to use a chamber gas In which the slootron drift
Card 2/3

00a 6/036/60/038/005/052/057/XX'
3006/1070
AUTHORBt Aomar# A# Ps, lorolov#_.G. A.0 Kochorov, 0. Yo.
TITM Study of the.Alphs Decay of U236
PERIODICAlt Zhurnal skeporlsontal 'noy I, ~eorstloheokoy fisiki, 1960,
Yol- 38# No- 5P PP, 1436 - 1438
TZXTs The alpha spectrum of U236 was studied 'by means of a high resolu-
tion ioniiiation chamber with grid. This chamber permits to determine the
number oflion pairs formed by the alpha particles In the chambers The ion
pair.numbOr N and the alpha particle energy 9 are related by the equation
E a Nvt w ore w Is the energy required for the formation of an ion pair@
depends a the gas filling of 'the chamber and on the energy of the alpWt
articles., To separate the two offootat 2 Is met equal to Sw0 + P_00 where
;
~v0is the moan pair formation energy for 2 >4 Xey, and F,0 is a parameter
depending on the natureof the 668, (to a 83 kov for a mixture of argon
and astha-ae)o The energy of alpha partial*# was daterained+from the
Card

, 23il~ 35
Study of the Alpha Decay of 3/056/60/03e/005/052/057/XXI-
B006/BO70
relation where a in the pulse-height ratio of the
~236 - *1234 + 0 1
alp 1 0 of U236 and 4,,
~aj:r Ic 9 Thus, Z a (4.488 + 0.003)Mev is obtalnm~ -40
Fil h we the spectrum of alpha parti-cles for a channel width of 5 kevl'
the broke curves give the resultiof an analysis In which account *8
taken ofe:he distortion of the spectrum due to the conversion alectr:ns.
The corr ponding level scheme is shown In fig. 3.,
_9
V
0
33
4t 1 4 10 Ff
7
ftm
.-j I
Card 2/5 PW, 3

84'/,i-i,A
Study of the Alpha Decay of U236
0/056/60/038/005/052/057/XX
B006/BO70
Fig. 2 shows the alpha spectrum taken for a channel width of 13.9 kov.
4 +
The three alpha groups corrosp?O to the transitions to 0 0 2 , and 4+
level, respectively, of the Th nucleus. The distance of the a2 group
from the ground level Is 160 kovi the intensity of this group is
(0.26 + o.i)%. Professor S. A. Baranov to thanked for having supplied the
U236 samples. Thor* ore 3 figures and 8 reterencesi 2 Soviet and 6 US.
ASSOCIATIONs Lenin4r&dskiy flaiko-tekhnioheakiy Inetitut Akadeati nauk
SSSR (Lenivarad Institute of Physics and Tachnoloay of the
SUBMITTEDs December 15, 1959
Card 3/3

- -- - - ---DAXkSXIMSKIY*--r9jjFjM=,- O9A.j AOCWWJ, -- - * - - -- ---- --- -
_Qct_s__
Xffoot of tho sUoklag of eloctrom LU An ionlsaUon chsaW.
'Wb.i to"ooksp, 6 noos3l-54 so t6l. (xru 14,10)
1, Fisfto-takhniaboakiy inatitut Ax mR.
(Zonis&Uon obambors)

5/002/000/016
B1 I I/B212
AUTHORS: Nocharovt 0. Yo., Korolev# G. A.
TITLE: Ionization alpha spectrometer with high resolution
PERIODICALi Izvestlya Akadomli nauk SSSR. Seriya fiticheskaya, v. 25j
.1 . no. 2t 1961o 20-256
TEX2 16 present paper was read at the 11th Annual Conference on Nuclear
Spootromoopy (Riga# January 25 to February 2# 1961), The authors describe
the ionization alpha spectrometer developed by them. Itbas a high resolu-
tion (half-width of the alpha lines: 251.35 kev) and a high ligbt Intensity
(the solid angle used was 20!30% of 4%). The spectrometer Is schematically
shown in Fig. 10. It oonsisis of: 1) ionization chamber with gridl 2).radi-
otechnical system (which, in turn consists of: 1) preamplifierl 2) &2pliflaq
3) limiterl 4) one-ohannel analye orl 5) 26-channel analyserl 6) pulse gener-
ator# and 7) amplitude indicator)l and 3) gas pump unit. The main part is
'the Ionization chamberl a brass cylinder with a capacity of 22 liters. The
collector electrode is mounted on the bottom of the chamber. The grid and
the high-voltage electrode are fastened to a special slide, which makes it
Card 1/ 6

8/048/6-1/025/002/008/016
Ionization alpha spectrometer B11-7/B212
possible to change the distance between the electrode. 4-mm thickbrass
discs are used as electrodes# The diameter of the high-voltag* electrode
measures 220 mm, that of the collector electrode 120 mm. The grid,constate
of nichrome wire (diameter 0.1 -Am) and was welded to & stainless stool ring.
The distancesbetween the wires are 1.5 &m. High-voltage wires are Inserted
in the chamber wall, and lires -for pulse transmission. The whole system
has been *Yaousted to .10- = Hg, and then filled with a mixture of argon
and 3$ mothane. The operating pressure is 1-5-1-0 atm. The electrode
potentials have been selected such that a recombination and deposition of
electrons on the grid is excluded. The electrode pulses are passed through
a noiseless preampliflor (Fig. 11) and then fed to an amplifier that has an
am.plification coefficient of 10-7. The ampliflore are modified models of Us
type Elmor-M. The use of Climiter reduce* the analyser channel. The
channel-width may be varied from 5 to 50 key by changing the amplification
coefficient. The one-ohannel differential discriminator has been used for
electric collimation. The 28-channel anslysert designed and.,eonstructed
after plans of the laboratory of the Physicotechnica'l rnstitui,.(Ref. 14) to
to be used for amplitude analysis. The eiectron pulses provide4a means to
calculate the alpha-partiolo energy and their angle of emergence. In order
Card 2/6

9/048161/025/002/008/016
Ionisation alpha spectrometer B1171B212
to obtain a high resolution# the authors have thoroughly studio& all reasons
that might influence the former. These reasons are divided into two groups
with respect to their influence upon the alpha spectrum: 1) Fluctuation of
ion pairs and radio nolose which lead to a Gaussian amplitude distribution
of pulses without shifting the maximums and 2) thickness of the radiation
source, sticking of electrons to slootronogative additives, no screening of
the grid and the end front of the pulses cause an expansion of the alpha
lines and also a shift of the-maximum towards smaller energies. An Inves-
tigation of these factors made It possible to find formulas for4etermining
the half-width of the alpha line and the shift of the maximum. By a prop:r
choice of the amplifying tub* and Its operation conditions (plate potenti 1
50*60 vt filament voltage 4+6 v) it was possible to out down the radio na -,
and reduce their half-width to 16 key. The use of an argon-methane mixture
completely reduces the sticking of electrons to oloctronegativ* additives
(Pigs. 12 and 13)- A considerable increase in drift velocity added to Im-
prove the energy and time resolution. Application of electric collization
(Fig. 9) improved the resolution of the ionization chamber without influen-
oing the light intensity of the instrument. The novel ionization alpha
spectrometer has been used to study the fine structure of alphaspectra of
Card 3/6

8/048 61/025/002/908/016
Ionization alpha spectrometer as* 31 17YB212
uranium and thorium isotopes (Tables 2-4), By striot observation of the
oorrootionst and due to the high resolution it was possible to measure the
alpha-line energy with an scour The energy of the main
fr ,log of 0.05L0.1%.
group of alpha particles om U 3 was mealurod with an accuracy of + 3%
(Ref. 16). Laboratory experiments have shown that a use of the ol*o7trods
pulse reduces the background, By a specific adjustment it was possible to
obtain 0.1 to 0.2 pulses par hr on the spectral region that corresponds to
an alpha line. Thus it was possible to separate the &Xpha line with an
intensity of up to one pulse per hr from the spectrum, i.e., also with suf
fioient accuracy. At a surface of 209 cm2 rd a thickness of 20~30 pg ca-
this corresponds to a half-life of 1015LIO, years. Combined with a 48-
channel time anslyzert the ionization aiphs, spectrometer has boon used to
measure short half-lives. Thus, half-lives down to 10-4-10 a** hay* been
measured. The results are more accurate than %host obtained after other
methods (Rof. 32). In order to determine the energy of a particles and the
corrections caused by electric collination (distortion of the intensities
of a lin*o)g it is necessary to know for argon the dependence of the dis-
tance of the ionic center of mass on the start of the alpha particles. This
dependence has boon determined experimentally and mathematically (Figs. 15
Card 4/6

3/04""'1/025/002/008/016

10AISAtiOn alpha spectrometer 212
31177D

4 and 16). The calculations have been made.by the degree student Ye. A.
Damaskinski7 of the IPI- There are
' 16 figurest 4 tables# and 32 rsfsrsn csx~

-7 21 Soviet
-bloc.
ASSOCIATIONi Fisiko-takhnichoskiy -institut Akadomii nauk (Institute of
Physics andTechnology of the Academy of Sciences)

"1'14

XOCHAROV,.GLb#
Total ionisation producod b7 4-partioles in gasoous mixtursee
Isv. M MR. Ser. fis, 25 no,7sW-S65M 161. (MM IAM
1, Irisiko-tekhnichasidy institut, AN MR.
(Ionisation of games) (Alpha'rap)

AUTHORSt
TITLEo
26440
S/048/61/025/007/002/005
BIOO/B209
Korolev, 0. A.$ and Kocharovj 0. Ye.
Operation of proportional counters
PERIODICAM Akademiya nauk SSSR. Isvestiya. Seriya fixicheakaya, Y. 25,
no. 7, iq6ij 866 - 870
TEXTs This paper was read &Vthe XI Annual Conference on Nuclear
Spectroscopy in Riga, January 25 - February 2, 1961. V. Veksler et al.
(Ref. ls Ionizatsionnyye metody issledovaniya izlucheniy. GITTLe M-o 1949)
and S. Korff(Ref. 21 Sohetchiki elektronov I jadernykh chastits. IL. U.#
1947) showed that the stability of a counter may be increased by adding
multi-atomic impurities to the inert gas in this counter. In order to
study the effect of such impurities one has to observe the variation of
the gas amplification factor which can be done the better, the better th e
energy resolution of the counter. This resolution which down to a certain
Acr critical gas amplification factor, given by Ecr WOB ev) is independ-
ent of the gas amplification factor is Interrelated with the primary
ionization by the relation iik$ 2.36 , whore m indicates the number of ion
Card 1/3 fik; 0

Operation of proportional...
26440
S-/04SJ61/025/007/002/005
BIOO/B209
pairs. The most Important items affecting the line half-width are dis-
cussed. With a gas amplification factor equal to 5# the author obtained
relative half-widths 'of 1.7,and 1.0 for the alpha-lines of U238 and u234#
respectively, at an argon pressure of 1,3 a ta . The biggest share to the
half-width is contributed by ond-effoots and by the effect of the space
charge. The gas amplification factor was found to be hi her for argon
containing a small quantity of aethan* (up to about 6.2%1 than for pare
argon. The theory of M. S. Rose and S. A. Korff (Ref. .61 ftys. Alev.9 Ut
850 (1941)) is shown tobe not applicable to San mixtures on account of
electrons forming In stcond-kind collisions. The gas amplification factor
is given by the expression k a ft adr# where r0 denotes the radius of
r
4)
the counter wire, r the distance at which the avalanche &rise## a the
number of ion pairs formed by rone electron per unit length. The authors
give the formula A iexp (aN I a(r)dr), which represents A as depending
Card 2/3

VOUMV, MuM.1 KOW# A*Pol OWLEY, O.A.1 KOCWMv O.Te.
AnUcation or an imization,16opectrmater vith a tim am-
ly"r for h&U-Ufo detendnaUanse Isy. AN SMo Swo Xiso
25 no.91llSS-1196 062* fMIRA 34st)
i., V"*6-tlm"&*wdj Iftutut Is. &j, Iotte AN MA.
iftdicaotl" substowso-smay)

34171
$10481621026100210121032
BiOi/B102
IUTOORSt Korolev, 0. A.j and Kocharov, 0. Yo.
TITLEt Measurement of the alphs-particle energy of the lone-livae
isotopes Th232 and Bi21O*
PERIODICALs Akademlys, nauk SSSR. Izvestiya. Seriya fixicheekays,
Y. 26, no. 2, 1962, 235 - 236
TnTe The main alpha line of Th 232 and the alpha lines of Bi 210W were
measured with an ionization alpha spectroset er. The method was described
previously (A. P. Komar, 0. 1., torolev, 0. Ye. Xocharov, Zh. eksperim.
i'teor. fit., 21 1436 (iq6o)). The Th source was prepared by slectro-
deposition onto a stainless steel disk and radiographically examined for
homogeneity. The alpha line of Ra224 (5681 kev) use used as reference
line. It was found that Sa 0 4009 t 5 kev. An Ionization alpha spec-
trometer with a better resolution permitted a more pmise determination
of the energy and intensity of the alpha lines of BI
Card 1/6 '
121-

34T048/62/026/002/02/032
Measurement of the alpha-particle... BIOI/B102
Line Za# key Intensity#
01 495S t 5 57.6 t 1.0
a2 W6 -t 5 36.o t i.,o
a3 4568 t 5 6.o t o.5
a4 4425 t 10 0.4 ! 0.2
The alpha line of U 234 (4766 key) was used as reference line The energy
levels of TI 206 were corrected on the basis of these data (Fig.).
L. 1. Rusinov is,mentioned. S. V. Golenstskiy Is thanked for a
discussion, and V. V. Pashuk for assistance. There are I figurt, 2
and 9 r*ferencess 6 Soviet and 3 non-3oviet. The reference to the
English-language publication ras4s an followsi Harvey, B. ~;.,
Jackson, H. G., Eastwood, T. A., Hanna. G. C., Can3d. J. Ph,79 251)
(1957)-
ASSOCIATIONo Yiziko-takhnioheskiy Institut In. A. F. loffe Akedemil nauk
SSSR (Physicotechnioal Institute A F. jr)ffe cf th,~
Card 2/l kcademy of ScIencen 'U.-L-Ri

Y1172
i%862 102 6/002/013 /03 2
I oa
AUTBORSt Abrosimov 9 Ve I and 100harov 0 *. To
TITLE: Effect of source thickness on the form of energy and
angular distributions of *-particles
PRIMICAL: Akadsulya nauk 9382. isvestlya. earlys, fisicheskiyat
To 261 no. 2v 19629 231-244 j
TUT t The effect of the thickness of the radiation source an the form of
the spectrum of one group of a-partioles was datorminedo The results can
be gen*rallsed to some other groups of a-particles and other charged
particleve The energy and anolar distributions of a-particles emitted
from a plans -uniform source of thickness It were sad* the basis to the
calculationee' The number of particles with energies of from Z to 2 + dE
Omergln4 per unit time from one surface element d8 at angles of from 0 to
0 + 40 (from the surface norma) Is U no a 4EvlnGaosQdrdQdS/2 (1)
ft a nuab*r of #-particles emitted par unit rolun* par unit timal r a" It@
b9tween so-It(s) VA I 6~R(N).(d1/41)d1j No - total range of a-particles in
Card -1/5

-, 41-1-
8/040/62/026/002/013/032
Effect of source thickness B106/B108
the sourool R(H) a range of a-particles In the source as a function of
energy)e Integrating Eq. '(I) over 3 neglecting the edge effect (sufficient-
ly large source) yields the energy anj angular distributions of
A
a-particUs on the souro* surfaces d W/dzd(oosa) - (No/2h)cosQdR/dE
(so .418h (nusibor of &-particles emitted by the entire #care* per unit
time). For sources with h >Ro (thick source)
(2).
JON 21r C4M
0 E > so VK
for sources with h 4RO sources)