ACCESSION NR: AT4021264
effectiveness of a detector with an organic scintillator4 This method prrtwesto be
highly effective and acquires high calculation precis tcn::,%d tit ~moderate mac'hina
time consumption. All interaction processes of neutrons irithMuclei of the
scintillation substance are taken into cons; iftrat ion g. InaludImS the margiftal effects
on the walls of the sdintillator., These are jiresented.L3 a BiVal?h, The paper also,
includes a table of registration efficiency for a 30 X 31),= cr:rstal. Crig. art.,
has: 3 formulas, 3 figures, and 1 table.
SOCIATION: MookovskLy inzhenerno-fizicheakty inmtituti Kati, ~wv Physicti and
AS
Engineering Institute)
DAM AN: 06APrUi ENCLi 00
SUBMITTED: 00
110 REF SOV 002
SUB CODE: bF9 PH DrMR: 003
Card 2/2
ZOLOTUKHIN, V.G.; MOOLINER, A.I.
Distribution of tho nurmixir of reeordings by a neutprm detector placed
in a reactor. Atom. energ. 1.5 no.1:11-16 J1 16,1. (MIRA IW)
(Nuclear counters) (Distribution (Probabilitr theory))
ZOIDTUKHIN, V.G.; DOROSHENKO G.G.; YEFMIIKOj B.A.
y
Calculation of pulse amplitude distributions.and counting -
efficiencies for a fast neutron scintillation detoctoro
Atom. energ. 15 n6.3:194-200 S 163. (MIRA Milo)
(SaintiLlation counters)
YERKAKOV, S.M.; ~OIDTUKHIN. V.G.; FETROVp E.Ye.
- 4': ""U', - I I
Calculating the passage of neutrons througgh a P140D polyet)q~ene
layer. Atom. energ. 15 no.3053-255 S 163. WRA l6m.)
(Neutrons-Capture) (Shielding (Radiation))
ko
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ACCESSION NR: AT4019046
The application of this method to problems involving the passoge of neutrons and-gamma.
quanta through a substance Is possible due to the absence of any interrelation between the
particles In real beams. The difficulties that arise In connectioa with the use of the Monte
Carlo method are concerned primarily with the determinatioti of small probabUlties. In
problems connected with the passage of radiation through a substance, the smallness of
the probability p may be occasioned by the absorptioa of the particles, their leakage from
the medium, energy losses as the result of slowing, etc. It is pointed out that the Keumaa
series for the solution of the Idnetic equation reduces the rafflaUon transfer problem to
the computation of mqltiple intervals, while the Alonto Carlo method itself consists
essentially In the calculation of the terms of a Neumma series which are the muldple
intervals. Thb use of non-random points, in the opinion of the authors, implies a repudiat!
of the probabilities of the Monte Carlo scheme, ellminating.the possibility of a practical
evaluation of the accuracy of the results. In those cases inwhich Interest attaches to a
particular functional of the kinetic equallon solution., the methods which are described
in this article for Increasing the statistical effectiveness -of the method normally provide V
aacuracy quite satisfacory for pracUcW purposes with a number of histories ranging fror
-2/4
ACCESSION NR: AT4019045
103 to 104. The authors describe the method of conditional probabilitios (in American
technical literature U-Js method is Imown as,the metbod of analytical averaging). IWO
noted that different modifications of this m n th~
,qthod aro possible, all being based o
introduction of the transitional'probability IC(x -,r4, connected with K(x iv x) by tbo formula,
K(x
K (x
M)
where ('D) is the region of space ti~,~ifilchthe function W attuumes the greatest vablea.
The semi-analytical Monte Carlo method Is briefly discussed. This method Is based an
the use of analytical solutions (provided such are possible) for certain ramificatl6ne -of
the basic straying process. The essential Idea of the "control variablo method" Is ex-
plained. This technique Is sometimes also called the "correlation sampling method".
The point Is made that the chief difficulty in the use of this method consists in flading"
random value- k of high correlation with r the mathematical expectancies
of which are Q&. We %iethod of local stream calqUItioa Is discuoFed and eumples
ond
of its use are given. The use of quadrature formulas with ramiom nodes Is analyzed.:
it to noied that the further development of the geaeral raethadm for reducing the dlsrarslon,~
based on the oonstruedon of Interpolation-quadrature, formulsts, permits We formulation 0t
3/4
ACCESSION NR,., AT4019045
quadrature expressions with random nodes of high accuracy,. which are wa7 nodul for!
practical applications. A final section of the article deals with piloblem-wolving thro4i,-.
the use of high-speed electrado computers. Orig. art. hams, 19 famulass,
ASSOCIATION: none
":'DATS ACQ; =664-i ENCL., .0
SMMITTED-. 14Aug63
~,NOREF-BOV:'*010..;"',,"~',':",~,"',i Mimi, 0416
'RM CODEs NP
A.
'j:
4/4
G. G. YEFDVIKO, B. A.; WLOTUIGIINA, V. 0.
"A Method of Calculating Efficienciet, for the Invest igal,ion D:t CofttinUOU6
Spectra of Fast Neutrons."
report submitted for All-Union Conf on Nurlear Spectron(iopy, %billsi, 1442
Feb 64.
NUI (Moscow Engineering Phyeics Inst)
ZOLOTUKHIN, V.G.; IMAWYANOV, L.P.~ BLYSM17KA, A.A.
Analyzing the charanteristica of mmny-rator imichaniaal
neutron choppers. PrIb. i tekh. eksp, 9 na.206-39 Mr-Ap'64.
(MTRA 17- 5)
MnMYLUS, F. F.; ZPLOTUKJIIN, V._G., -iU,'-MOV, S, M.
"Sol ut Ion me thods of t ran sport eq,Aa'w Ion in in I irdrzger)eou a and f1ti J4ti W,,l 114 - "
raport submitted for 3rd Intl Conf, Peaceful Uses of Atomic Energy, Geneva,
31 Aug-9 Sep 64.
14DGILTER, A. I.; ZOLOTUKHIN, V.-G.
"Space-time correlation ro-Aut1ons fn imAtiplying systemn."
report submitted for 3rd Intl Cpnf, Peacefui Uses of Atomic 14riorgy, Gen-twa,
31 Aug-9 Sep 6h.
------------------------------------------------------
BUBLIK, YERMAKOV, S.M.; YEEFIWWO, B.A.; ZoLlyrij
$T11N, ;T'AL; PETRO, E ym.
Gama-ray dose from a uniilrecticrial nowce doil-air iri-.iirfaje.
Atom. energ. 18 no.6~62-8-62? Jo 165. 189i7)
Eli
7
7
A
DP*
A -71
by Vaat m(lutrum Cl'y it
6C.In t Lation ~qpl~c~trqjl
&OURCE: Atomaya naergipa, v. 19, no. T., 1.965,
TOPTC TAGS - fwt nautron, tieutram apactz"llm, vuld'.11'eltatic Mat-l-lit, S-Itts-le (::ryat'd,
crystal counter, sT.-ectromet er, lbmtm Q.Tu-lo motlod
'357%k-T: K-Atrices are cal
A a-alate