SCIENTIFIC ABSTRACT PETRZHAK, K. A. - PETRZHEK, I.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001240630007-8
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: June 15, 2000
• Sequence Number: 7
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

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The Efficiency ol" an End-diridow Coun'-----.- al~ -4 F-unct:ior
of P-Spectrum
tLe absolute cou-nting efficiency is snown as a faricL-m 01 t:-
surface density of the speci:7!en for various ener.-i-s. Ex
-ents show that the absorption witlim the slec~.men ~;trjn--Uly
depends on the maximum ener,~y in the O-s,)ectram. T i s e ffe r t
reduces the efficiency by a factor of 3 for low ,,3,:-a-
tion. For high ener,-y radiation (of r2ie order of I I'LI'l)
the efficiency is in-ie~,endent of surface U4en3-L-7 ra,-----
"Pae -fl
ic)enc,,r at a z:-iven
sity may be re~,rese:-ted aS a -fu-nz!r--)r. of t:-F! :2ax-- E-
ol the O-emizter. Tv---Js is s,..ov;-- 4--, F-'~: f-3r
cDnS4StF Of ~Wo v-,:r-
er th'-:~,,~. T C
sections. Tne firs,~ shows tne very
of The efficiency on ener,~-y u- to, 3ay. NIeV ar-.1d ',~evor-`
triis point
y i. s iride-,,enclent of t..e
enerj7,y of the it follows fro.,:,, F1--
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for-:, ,f T~v,--~ sin,~e different v;-r-
'o T)Int this Tije roiaLive soled an,-,-Ie of' tl-,e
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o-IL' P-Spectrum
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ROMANOV, Yu.F.; PE~BZRAKP K.A.; RAK, M.A.
Cadmium ratios for Ag I(Y7 and Agl('9. Trudy Radiev.insi.!Y SSSR 9:84-86
159. 14: t )
(Si,lver-jeotopes) (cadmium)

BPKP M.A.; P=HAK, K.A.; ROMANOV, YU.F.
Amlysim of a neutron field of unifora density. Trudy Radiev.inBt.
AN SSSR 9:87-90 159. (KMA 14 r6)
(Neutrons)

KRAZOV, Yu.L.; BAK, M.A.; Ph7RZRAK, K.A.; ROIWIOV, YU.F.
Energy distribution of neutrons in the water surroundin the source.
Trudy Radierv.inst.AN SSSR 9:91-103 159. 1012:RA 14: 6,
(Neutrons)

F01400V , Yu.F.; PETRZHAK., K.,L; BAK, M.A.
Measurement of the diffusion length of thermal neutrons in water,
Trudy Rudiev.inat.AN SSSR 9:104--106 159. (.1-fJPA -14: ~ "
(NoutronB)

BAK, M.A.; GORSHKOV, G.V.; MA';VIYKNKO, V.I.;-Ph7RZHAK, K.A. ; ROMAROV, YU.F.
Radon neutron sources. Trudy Radiev.inst.AN SSSR 9:107-1-12 159.
( MCLEA 14 - 6 )
(Neutrons) (Radon)

BAKY M.A.; GORSHKOV, G.V.; MATVIY11TKG, V.I.; P-P,7RZHAK, K.A.; SHIMANSKAYA, N.S.
Determination of the neutron yields of the sources R&+ Be, AC +
Be. MaTh + Be, and P + Be. Trudy Radiev.inst.AN SSSR 9:120-125
.*059. (MIRA 14:6)
1. (Neutrons)

BAK) M.A.; PhTRZHAK, K.A.; ROMANOV, YU.F.
Wall effect in ionJzation chambers. Trudy PAdie"v-inst.AN SSSR 9.192
206 159. Olal~A L4 6;
fTonization ch&mbera)

MALKINP I.Z.; PETRZRAK, K.A.; YAKOVLEV, V.A.
Effect of &lpha-p&rticle reflection during measurements i-n a 277
sol-id angle chamber, Trudy Radiev.inBt.A1,EBSR 9:207-213 159.
(MIRA 14.6)
(Alpha rays) (Ionization chambers)

&JGO;-AOV, S.S.; MAMIN, L.Z.; FETRZHAK, K.A.; YAKOVLEV, V.A.; YAKUNIN, M.I.
Ionization chambers for 9(-particle counting. Trudy Radiev.inst.
AN SS3R 9:214-228 159. (,MIRA 1-4: 61
(Ionization chambers) (Alpha rays)

--UjRZHAK, K.A.; NIKOL'J"KATA. Te.B.: PETROV, Tu.G.; SHLYAMIN. N.A.
Pospibilit7 of using a method involving thq slowing down and
colloctlon of fission fragments of gag for t)o Rtvidy of frag-iont
isotopes. Part 1: Radlochnnical study of the distribution nf
frag-nents fron their paths. Raiinkhlmita I no.2:227-210 159.
(MIRA 12:8)
(Fissinn products)
nM

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21(8)
AUTHORS: Bak, M. A., Bugorkov, S. S.P SCV/89-6-5-18,:33
Illinskaya, T. A., Petrov, Yu. G;1 Petrzhak,-&, A.,
SolntBev, V. M., Sorokinat A. V.
Ushats iy, V. N.
TITLE: The Yield of Ru 103 and Ru 106 in the Fission of U 235 and
Pu 239 by Fast Neutrons (Vykhody Ru 103 1 Ru 106 pri delenii
U235 1 Pu 239 bystrymi neytronami)
PERIODICAL: Atomnaya energiya, 1959, Vol 6, Nr 5, PP 577-578 (USSR)
ABSTRACT: The yields of Ru 103 and Ru 106 were determined by means of
a relative measurement with respect to the Mo99-yield.
Uranium oxide (U 235_enrichnent > 90 %) and plutonium oxide
were pressed in aluminum caskets. The latter were surrounded
by a 1 ram thick Cd-sheet, and the whole was packed in a
firmly closed aluminum cylinder. The cavities are filled
with boron carbide (all-round thickness at least 2 cm).
Two samples were made from uranium and 4 from Plutonium,
and were irradiated for 52.2 hours in a water-filled beam
tube of the heavy-water reactor of the AN SSSR (AS USSR).
Card 1/3 The neutron spectrum is characterized by the ratio

The Yield of Ru103 and Ru 1o6 in the Fission of sov/69-6-5-18/33
U235 and Pu 239 by Fast Neutrons
En > 1.5 Mev : E n> 2-5 Mev - 4.0 + 1.5. From the irradiated
samples Ru and Mo was chemically separated, after which
thin P-preparations (thickness