SCIENTIFIC ABSTRACT KOMAR, A.P. - KOMAR, I.V.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000824020009-6
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: June 14, 2000
• Sequence Number: 9
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

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KOW9..~,Zj KOVAMO Zom
Zhur.tsldi~fiz. 31 nol.-2
loothermic gma caaorim
ja 162a W-A 442)
J* Fisiko-tokhniohe institut AN WSRt 14 4--A

Ja:;ac,rch on thn. strt;cturO Of '!-cmic nuclei. Vest. AIT
i,o. 2:61.,6E. F 1.51. (,XIPV- V,:2)
Ato-AC)

S/05 61/031/002/012/015
BI 24YB202
AUTHORS: _EomarA. P. and Komar, A. A.
TITLE: Molecules and complexes of molecules and atoms as waveguides
for electron waves
PERIODICAL: Zhurnal tekhnicheskoy fiziki, V. 31, no. 2, 1961, 231-237
TEXT: When working with a field.emission microscope, 2 to 4 light spots
consisting of two'or four parts frequently appear on the screen of the
microscope (Fig. 1). This is mainly the case when the piston walls are
poorly degassed or if the vacuum is poor. Sometimes also oval spotal
circles, rings and morecomplex patterns are observed (see Fig. 2),
which
are thoroughly described in Refs. I and 2. On the basis of the papers
hitherto published it may be assumed as certain that 1) these patterns
are
formed by molecules or complexes of molecules and atoms which are
adsorbed
on the surface of the point; 2) the symmetry and intensity of the
patterns
are not connected with the symmetry of the molecules; and 3) electron
ex-
change occurs between molecule and metal point. The intensity
distribution
in the spots is the same as in light which had Passed through
transparent
Card 1/8

89166
S/057/61/031/002/012/015
Molecules and complexes of... B120202-
threads (Ref. 12) or in amplitudes of ultraviolet vibrations
which had~,.
passed through elastic rods (Ref. 14). During electron emission
of
molecules, the electron waves are canalyzed by the molecules.
Electron
emission mainly takes place from the direction of the free
front side of
the molecules. It is demonstrated that the molecules are
waveguides for
electron waveE -ihich was also experimentally confirmed. Two
boundary
conditions I) Tlr= 0
II) Prlr-a~.00. (5)
are set up. The authors also discuss the order of the
occurrence of the
various types of vibration and the form of the patterns on the
screen as
depending on the energy E - ev of the electron, i.e., its
dependence on
the voltage drop on the waveguide. The critical lower energy at
which
su2h patterns appear on the screen is determined from e uations
I) e7 ')n2i 2m
V. ) = ,
9 (10a) and II) e (E +e7v,) 2 (10b),
712 a2 tL2 a
Card 2/8

Molecules and complexes of...
S/057/61/031/002/012/015
B124/B202
which-indicate that this order is exclusively determined by the
law
governing.the increase of the roots of Bessel function "ni and
Ani-
Various types of vibration for both boundary conditions are shown
in
Table 1. They indicate that the types of vibration are very
similar as
to their Y distribution symmetry under both boundary conditions.
The
pattbkn.� consisting of two and four parts can actually be
ascribed to the
waveguide properties of the molecules. The order observed in the
present
paper is-in full agreement with the order of the types of
vibration at
Y1r=a =_09 shown,in Table I. Table II shows the types of
vibration for a
waveguide with square cross section which do not essentially
differ from
those of Table I. The values m corresponding to the lowest types
of
vibration are low; however, n may vary in a rather wide range.
The patterns
shown in Table III may be observed on the projector screen if m-
3 and
n= 6. -There are 2 figures, 3 tables, and 15 referencess 4
Soviet-bloc
and 6 non-Boviet-bloo.
Card 3/8

89166
S/057/61/031/002/012/015
Molecules and complexes of... B124/B202
ASSOOIATION: Fiziko-tekhnicheskiy institut im. A. F. loffe, AN SSSR
(Institute of Physics and Technology imeni A. F. loffe of
the AS USSR) Fizicheskiy institut im. P. N. Lebedeva
Akademii nauk SSSR (Institute of Physics imeni P. N. Lebedev
of the Academy of Sciences USSR)
SUBMITTED: Deoember 14, 1960
Card 4/8

23730
3/05 611031100610141019
BI I 6YB201
AUTHORSs Komar A P., Mikheyev, G. F., Fominenkop V, P. and
TITLE3 Study of electron capture with steady betatron acceleration
PERIODICALs Zhurnal tekhnicheskoy fiziki, V. 31p no. 6p 1961, 740-745
TEXTt The authors wanted to determine the part played by the individual
sections of the capture range, i4e., the contribution of the electrons
captured onto the various instantaneous orbits to the total ourrent.of
all
captured electrons. The investigation was conducted by the method
earlier
described by the authors (Ref. 1: ZhTF, 50, no- 7, P. 855-859, 1960).
This
method made it possible to inject the electrons only into the previously
chosen narrow section 6- 6 of the instantaneous orbits within the
capture
interval az (Fig. 1). This was achieved with the aid of a special
injector
device provided with deflector plates, which made it possible (1) to out
off the voltage pulse U(t) of injection on the side of the large or
small
t values to any pulse duration (Fig. 2A and 6 );(2) to out out an
interval
Card 1/8

Study of electron capture**.
2373U
3/05 61/031/006/014/019
B116Y5201
in any pulse section by completely cutting off the residual
pulse portion
(Fig. 2 6 ); (3) to shift the injection pulse with or without
the interval
along the time axis. The injaotion pulse displayed a sine
shape, and had a
duration of 12 ~tsec and an amplitude of 40 kv. The intensity
of gamma
radiation sas checked while conducting the experiments,
instability amounting
to 5% at most. The experiments were made on the synchrotron of
FTI AN SSSR
with an initial betatron acceleration. The radius of the
equMbrium orbit
was Ro M 32 oms the coefficient of the magnetic field drop was
n-0.67, and
the steepness of increase of the magnetic field during
injection was
1 brated/lisec,. Figs. 3 and 4 present typical experimental
depende4ees of
gamma radiation intensity on the position of tha aquare pulses
cutting off
one or the other part of the injeotion pulse. Each figura
refers to a
definite position of the injection pulse with respect to the
moment at which
the magnetic field of the betatron passes through zero. The
corresponding
capture interval is represented by the A curves. The A and 6
curves
represent the change of intensity when cutting o'ff the
injection pulse on
the side of the larger ( A curve) and the smaller curve) t
values
Card 2/8

23730
S/0W61/031/006/014/019
Study of electron naptur,~,_ B 1 " 91/B201
by the square pulse appl-ied to one :)f the plates. The 6 curves
refer to
the "scanning" of the inject-Lon pulse with the aid of the alit, in
time
vthi,~h has a width of 0.2 asel-%. and v E;pacing of 0_1 4 ~ -~-
(,Fig. 2 ). The
c,irves denotR the angle- of-onp'.1i.re valu.~s fcor tn-~ usual
location of the
injector at -the external edge of the accelerator-, The
in-vestigation allows
the following to be stated& *,) The space rharge generated by the
electrons
escaping from the inje,~tor before and behind the sapture interval
has no
-ffect- upox? the coad-,tions of capti)re, 2) Under ~!aptur-.
conditions..
F_-.) tt::r i: =,I r ~I -.~rri r. th~, iq I ~t i I I br : ura, orb2_
t 9
TD e initial ampl-ittides of the f-ree v-ad~al r,sci. 1.1at~ons jf
the electrons
,;_illl JY1 this c(ksf-"- abraut half the -.ham'bi:r wicith-, As a
corsequencia,
the focal P""'0ii Of are lotaqted on the bourdarie2 of
tne regiou of Th-~s aonun.-tform distrib~;tion of iz..Ier:trcnq in
the cnamber a1so determines the intensity limif- Ex tr emum i ntensi
t y
can be at rainerl -i i th di fferen t capture in I. e rvt-tis . The
A t' Interval
must satlufy the in the arbIts near tha ecL-u-,'-brLum orbits To
eEL,: h C~ ~ '* -alue rcrr--~sponds -a and ,ft":! !st
harmonic.- of nonunif-:~rmiy cf the ajagnet,~i fleld. Tbil holck~t
a-s long as
the emission ourrent is suf.Lciently large fra- realiziag a
(-.ollective
Card

23730
8/057/6 i 105'100610141019
B1-06/B201
Study of eleitron capture,_
aris~a emissaor, currents.
4) The capturt! IT, every iecziozi of
iak,2o place such that'
the '--itenzi.ty tip t,~, t.-he va:iju~- ,)r quf,f~
.Le*.1ent for the emission
c~urrent chosar, a*i for ttie 19t harimt-,ntc t,-f
rxnun1.fi--rm.,,~y of the magnetic
f JL el d*, -r-ise~j --n prcpcrTi~)n f, the duratlori ),- sh-l-,
I nAlthough an
iricr~-ar6 of the dD-Ut~-,On ftcra 1~, -7~ % A ';
teleerrons to reach
c:hamb,~,-r that to a capture anto th
us"'Ato near the
equilibrii~!u Grbi.-~ tLe ~iifi?nsity ci Camma does not increase,
This indi--,ates that, with ti-Le use of th--s modt? (if
injection, the limit of
the riean e1e,-:trr;n densilty in the chaziber is Fittained
already in the
interval A t'. Further injecting even leads to a decrease of
intensity.
5) The cbange of rionurliformity of the magnetic field with a
change of the
emission current depends up-~n the space charge produced by the
electrons
circulating ~An the chamber during the capture interval. only.
6) It is
rioted that several authors bold the view that the intensity may
be augmented
by changinE the form. of the injer.-riori pulse. The ~tuthrjrs
of the present
pa.per believe that 1).-,, Lxierease can be brought abo-,it by a
proper ohoice
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23730
S/057/61/031/006/014/019
Study.of electron capture.,# B116/B201
of the capture interval. This interval must be sufficiently large for
the
orbits near the equilibrium orbit, corresponding to the available in-
variable nonuniformity of the magnetic field of the accelerator
concerned.
The main contribution of one or the other front of the injection pulse
is
also explained thereby. With weak emission currents, an additional rise
of intensity can be achieved owing to contraction effects. There are
5 figures and I Soviet-bloc references.
ASSOCIATION: Fiziko-tekhnicheskiy institut im. A. F. Ioffe All SSSR
Leningrad (Institute of-Physics and Technology imeni
A. F. Ioffe, AS USSR, Leningrad)
SUBMITTED: July 25, 1960
Card 5/8

88402
S/020J61/136/004/008/026
B019/BO56
AUTHORSt P., Academician of the AS UkrSSR, Vorob 'yev, A - A,
i_n&_Koroi~i'-V. A.
TITLEt Measurement of the Fluctuation of Ionization Produced by
a-Particles in Argon
PERIODICALs Doklady Akademii nauk SSSR, 1961, voi. 136, No. 4,
pp. 795 - 797
TEXTt In the introduction, the authors refer to the frequently used
measurement of ionization caused by nuclear particles for the purpose of
determining the energy of nuclear particles. A relation given by V.Fano
(Ref.1) for the mean square fluctuation of the number of ion pairs with
constant energy of the ionizing particles is written, and it is found that
this formula is suited for determining the upper limit of the mean
fluctuation, but not for more exact computations. Besides, Pano assumed
that the ratio between the probabilities of the various inelastic
processes is independent of the nature and energy of the ionizing
particles. The measurements carried out by the authors were made by means
Card 1A

88402
Measurement of the Fluctuation of Ionization
S/020,/61/136/004/008/026
Produced by a-Particles in Argon B019/BO56
of a-particles emitted by Ra224 (E a ' 5.681 Mev) and of
a-particles emitted
by Fr 221 (Ea = 6.336 Mev). The ionization chamber was filled
with
chemically pure argon + 1.5% CH 40 whereby recombination could
be prevented
under certain conditions. Electronic collimation was used,
whereby the
resolution and, thus, the quality of the spectrum could be
improved. The
electronic means for improving the signal-to-noise ratio are
briefly
described. The measurements are graphically represented in
Figs.1 and 2.
The half-width of the Ra 224 a-line is 17 kev and has a mean
fluctuation of
7.2 kev. This mean fluctuation 6 is Composed of 6 - /62 + 62 +
62 , where
N P 0
6N' 6P , 60are the mean fluctuations which are due to the
fluctuations of
the ionization, to radio noise, and to other causes. In the
case of Ra 224
60 is negligibly small, and because 6p - 4-7 kev, it follows
thats
5-5 kev. For Fr 221 , 6 6.0 kev was obtained. From a discussion
of
the results, the authors conclude that 6N may be described by
Card 2/4

88402
Measurement of the Fluctuation ofJonization, S102016111361 04/008/P
0 26~
Produced by-a-Partiole3 in Argon B019/B056
6g(%) 5-8
2
for different Ea*'R 6u9 tbe given in Nov. Ifi the relation 6N FRO W.,
given by Fa,no, where No is the mean number of ion-pairs,.F is -found
equal
to 0.229 and its upper limit is given as-Flin , 0.33. The authors thank
X. F. Sobolevskaya, for her help in carrying out the measurements.
There are!
a
2 figures and 8 non-Soviet references, 5 Wo 1 Ca~nsdian, 1 German, and
French.,
ASSOCIATIONs Fiziko-iekhnicheakiy institut Akademii nauk SSSR (Institute
of Physics and Technology, Academy of Sciences USSR)
'SUBMITTEDs November 1, 1960
Ca~d 3/4

'0318
S/02o/61/137/001/009/021
B104/3209
AUTHORS:~' Voroblyevt A.' A*# Academician AS UkrSSR,
and Korolevj Y. A4
TITLE: The possibilities of reducing the effect of ionization
fluctuations in gases
PERIODICAL: Doklady Akademii nauk SSSR, v. 137, no. 1, 19611
54-57
TEXT: The authors based their work on a paper by Fano (Ref.
1: U. Fano,
Phys. Rev., 12, 26 (1947)), in which an expression was
obtained for-the
mean square fluctuations of the number of ion pairs at a
constant
energy of the ionizing particles. Fano's calculations show
that these
fluctuations are determined chiefly by the redistribution of
ionized
and excited atoms. Evidently, their total amount fluctuates
less.
The authors have now determined the amount of fluctuations
of the total
ionization, taking Fano's method as a basis. In this manner,
they obtain-
ed the mean square fluctuation s2 of the total 'onization U:,
1/4

20316
S)1020/61/137/001/009/021
The possibilities of reducing B104/B209
AF
)2
, (.~' _ 'k den.1e. the mean-number of ion pairs,
i N 0 W NO i
W W0/(1 + 6(1-P,)IP) WOAV P Z:Pk the total probability of
ionization in inelastic collision, W the mean energy of ion pair
0
production without additional ionization, and n k the number of ions
produced in the k-th collision. The relations
+ 2, P, (IV, Eh)
+ [Y' 'Pi (IV, -~eh) h (8a)
73 21 8a)
P 4 no"
I - P
[(W W,)2 + a , (W W')2+ (I W. (86)
W: P P (8b)
3
are obtained for P. The last two terms in (ea) are due to
fluctuations.
of the energy losses during ionization and excitation, and do not
depend
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20318
S/020/61/137/001/009/021
Thepossibilities of reducing ... B104/B209
on the additional'i6nization. 6.(d) is determined by the
redistribution
of the number of-ionized and excited atoms, as well as by the
fluctuations,
arising in the additional io 'nization. In'the limiting case where
additional ionization is missing (d - 0), Eq._(Ba) goes over into
the
formula of Fano"..., . Fig. 1 shows t he, rat io ~;150as depending
on the
obability of additional ionization for He and Ar. It is seen that
(cr) for argon drops, to nearly one-thirtieth with rising
probability,
T
and for helium it drops to nearly one-hundredth. The first of the
terms
appearing in (8a) was fou-nd to be always about 0-03, and the
second is
negligible. Prom this it follows that the accuracy of measurement
of the,
energy of ionizing particles is considerably improved by recording
all
ionized and excited atoms. There are 1 figure and 3 non-Soviet-bloc
references.
ASSOCIATION: Piziko-tekhnicheskiy institut Akademii nauk SSSR
(Institute of Physics and Technology of the Academy of
-Sciences USSR)
Card

3214~6
0 0
AUTHORS:
S/02 61/141/006/009/021
B1 04YBI 12
Komar, A. Academician AS UkrSSR, BochaSov, B. A., and
Solyakin, 0. Ye.
TITLE: Energy distribution of a-particles in argon
photodisintegra-
tion
PERIODICAL: Akademiya nauk SSSR. Doklady, v. 141, no. 6, 1961 ,
1339-1342
TEXT: The authors observed the energy distribution of a-particles
by an
ionization chamber with grids,for a period of 30-40 hours. Fig. I
shows
the block diagram of the experimental arrangement. y-rays (Emax ~
70 Mev)
were produced by the synchrotron of the Physicotechnical
Institute AS USSR
and possessed lengths up to 1500 4sec. The device was calibrated
by means
of the a-particle spectrum of natural uranium. Energy
distributions of VY
a-particles were determined at argon pressures of 1. 1.3, 2, and
3 atmos-
pheres. The maxima of energy distributions at these pressures 1y
at
4.6, 4.87, 4.4, and 4.3 Mev, the corresponding half-widths
amounted to
2.62, 2-76, 3.20, and 3.65 Mev- Since these spectra differ only
slightly,
the effect of protons, deuterons, and tritons on the taking of
spectra may
Card 1/)r3

32426
S/020/61/141 /()0t'3/009/021
Energy distribution of ... B1041B112
be considered low. Effectiveness of recording of charged
particles with
R~> d decreason with increasing RY%. In this case, R" is a
value which
approximately equals the particle path d = 35 cm (distance
between
electrode 1 and grid 2). The natural energy spectrum of
a-particles prod-
uced in argon photodisintegration is constructed from the
spectra obtaine&
The spectrum is shown in Fig. 3. Its maximum lies at 4.8
At"ev, its half-
width is 3.3 Mev. By a comparison with the spectrum
calculated by the
statistical theory, the difference of maxima was found to be
2 Mev, The
deviation of the experimental from the theoretical value may
be explained
by the occurrence of the reaction
A40(ayn)S36 besides reaction A40(7a)S36 or by a Coulomb
penetration faf.':rr
higher than used in the calculation. The authors thank the
team of the
synchrotron of the Physicotechnical Institute AS USSR for
work performed.
There are 3 figures and 9 references: 3 Soviet and 6
non-Soviet. The
three references to English-language publications read as
follows: M. E.
Toms , 1. McElhinney, Phys. Rev. , 111 , 561 , 0 958) ; M. M.
Shapiro, Phys -
Rev. , ~LO, 171 0 953) -, G - A - Ferguson, J. Halpern et al
. , Phys . Rev
776 (1954).
Card 2/h

321';-6
S/020 61/141/006/0091/021
Energy distribution of ... B 10 4,Y-,,
B112
ASSOCIATION: Fiziko-teklinichesMy institut Al-,adumii nauk SSSR
(Physicotechnical Institute of the Academy of Sciences
USSR)
SUBMITTED: September 22, 1961
Fig. 1. Block diaaram of the experimental arrawrement.
Legend: (A) nundle of y-rays; (C.Y.) lead oollimator; (1) electrode;
~2~ grid; (3) grid; (4) anode, (5) preamplifier; (6) amplifier;
7 selectori (8) coincidence circuit,- (9) bri,,,-hteninC circuit, (10)
impulsei
shaper; (11) recording device (electron-beam tube).
Card 3

37944
S/181/62/004/005/040/055
B139/B102
-3
Komar, A,. P., and Savchenko, V. P.
TITLE: Effect of impurities and dislocations on the auto-emission
of electrons in the case of metallic crystals
PEMODICATU Fizika tverdogo tela, v. 4, no. 5, 1962, 1346 - 1351
TEXT: Microscopic exposures were made of the emission from
technically
pure platinum, silver, andjopper single crystals. The specimens were
heated in a vacuum of t~ 10 mm, Hg, some of them to more than
10000C,
emission being induced by continuous or pulsed voltage of 3 - 40 kv.
.Lron %~as sputtered onto a Dlatinum sDecimen which was then heated
to
7000C for a period of 6 min, vithin which the iron dissolved in the
Dlatinum. VIhen the specimen was cooled rapidly, the pictures 3howed
briglit spots spreading rapidly over the whole specimen after I min
heating at 9000C. A smal-J. bulge developed at the tip of the
specimen
as a result of electric discharges. The specimen was then heated to
12000C and allowed to ocol down to room temperature. 'This caused
some
Card 1/2

S/181/62/004/005/040/055
Effect of impurities .... B139/B102
of the white spots to disappear, whilst others darkened preserving
a
bright fringe. These erupting white spots are the impurities which
di-t"fuse rapidly from the cylindrical Dart toward the tip of the
specimen,
emerging at the surface along with the dislocations, where the
intensity,:
of Culect'ron emission is locally damped by them. As a result of
this
emergence of impurities, a cathode formed of commercial platinum
becomes
'Ourified throug"n alternate heating and cooling under a high
vacuum in the
electric force field. There can be no doubt of the correlation
found to
exist betvein the appearance of bright spolus in the microscopic
and electric breakdown. If the tip of the specimen is thoroughlY
nurified from impurities and dislocations, breakdown is difficult
to
achieve, even if a multinle of the voltage is applied which before
-ourification was sufficient to cause it. There are 4 figures and
1 table.
Fiziko-tekhnicheskiy institut im. A. P. Ioffe AN SSSR
Leningrad (Physicotechnical institute imeni A. F. T-offe
USSR, Leningraa)
SU!".'ITTED: January 18, 1962
C C"-- d 2/ 2

KobfAR, A.P.; KOHARt A.A.
Theory of the wave guide properties of metallike
molecules and
their complexes. Zhur.tekh.fiz. 32 no.7-.867-873 Jl 162.
(MM 150)
1. Fiziko-tekhnicheskiy institat Imeni A.F*Ioffe AN
SSSR,, laniMrad
i Fizicheskiy institut imeni P.N.Iebedeva AN SSSR, Moskva*
Oblecular association) lWave guidea) (Field emission)

39 79
Vj
/7
-M-0-73 C Voroblyev, A., Komar, A. P. Yorolev, V. A.
no of a_nart4cles in ar6on
Decrease 01C ionization fluctuatio
v
43,
Z s' oy
-E 1110 D 1 Ck : I 'e 0:: e t,- cfzL
hurnal eksperimental"10.7 i t
no. 2(8), 19-02, 426-428
'EXT: The authors had: shown earlier (DAN SSSR, 137, 54, 1961)
that the
vith redi, s'r4butjiG,
ioni::at- ion fluctuatlio'n's associated 4 - no o f th e numocra
of
excit".ed and ionized molecules can.be reduced by addinj a
~--ascouo i!:;-purity
it' e, J, - ;1 4
an ionization Dotenti_-I lower than the en Ey 6' the lo,.-;est
excited
level of the ?)rincipai comr)onent. Here, the authors '.--,-i-ed
to chec' -, .nis
20--silbility b-y e"eximent. They us-ad a nulsed ionization
C'hamber
vii-ch arZon contuinin~-, 0-17 112' 0-02 ~'5 0 21 and an
acetylene ira.)urit-y. . s
its ionization i)otlential of 11-35 ev is lower than the loyiezt
.`r,-oi% level
(11.5 ev), the acetylene -3dition incveases the ionization. The
-ionization
fluctuations %,.,cre calcula;ed from the half-width of-the a-line
(EC., 51631 Alev) of Ra 224 for comparison, the measurements
,-iere Ire,.jeate-I
Card 1/p
050., 62j &V W
Decrease of.jonization... 002/00,'
3102/3'10A
o n A r + 1 C H4*
CH AE lkev e V
Ar+i/~L 4 8.1 5.8 5-7 2!0' 215000 0-22
.-r+0. %-, C2F,2 6.o 4.7 175 2680oo o.o,
6B,
total -root-mean-square PuIse-hei6.Icj,6 fiuctua,jons,
Mean-square Pulse-heiCh, fluctuationg due 0 electronic ro 0,- V41
noiso, the
due to fluctuations in the niiziber of I'on Dairo, to'.
root-mean- &.L 1,
~~uarO fluctuation Umoor O-L ion
~cterrlined by t~!~T/ij . I a in the llmiiber of jor, 2
I.V/110; 110 a 212,ooo ion ai~:o. T,~j 0 K, - , is
,~,idth Of the ix-line was 8.7 kOv. There are*1 D -, , axitrluri
half
A 0 1, 1 n 1 1' lla-ure and 1 table.
MIT : Piziko_'ekhnich0n%jY in:jtitut i.-'. A. P. ~ , :.
j
23"11 (Physicotec
Ac,doray of Scie_hn'cal Tnstitute imeni i..
'Ices USSR) Z -, e
March 13, 1962
Card 2/2

43362
5/056/62/043/005/006/058
B183/B102
AUTHORS: Boebagov, B. A., Komar, A. P., Solyakin, G. Ye.
TITLE: The energy dist'ribution of photofission fragments from U
258
nuclei for various maximum energies of a y-quantum brems;-
strahlung spectrum
PERIODICAL: Zburnal eksperimentallnoy i teoreticheskoy fiziki,
v. 45,
no. 501), 1962, 1611 - 1615
TEXT: The bremastrahlung spectrum of a synchrotron having
maximum energies
of EP/max = 17.5, 30 and 50 Mev was used for plotting contour
diagrams
Of the kinetic energy distribution of photofiesion fragments
from U 236
nuclei. A double ionization chamber with hn oscilloscope
connected to two
deflection systems was used as detector. A collodion film coated
with
bismuth on both sides, on one of which a layer of uranyl nitrate
was
-condensed, servei as target. 15POO to 20000 fission events were
recorded
in each series of measurements. The contour diagrams show that in
symmetric fission the yield probability increases with
increasing E
.max
The kinetic energy at the moment in which the fission products
fly apart
Card 1/2

S/056/62/043/005/008/058
The energy distribution of... B183/B102
is, however, found to be constant within the limits of error � 3
Mev 'Ahen
the mean excitation energy of the fissioning nuclei is varied a
moderate
amount. The values 13.6, 17.0 and 21.4 Mev obtained for the mean
nuclear
excitation energy in symmetric fission correspond to the maximum
energies
E, = 17.5, 30 and 50 Mev and %ere derivei from an estimate of
the mean
A max
nuclear excitation energy in asymmetric fission. This estimate,
based on
data previously publishel on known cross sections for the
photofission from
238
U and on the structure of the bremsspectrum, is practically
independent
of Ei-max. So the resulting value for the kinetic energy during
the' formation of the nuclear fragments in asymmetric fission is
found to
be always 169 Mev. The position of the maximum of the energy
distribution
of the fission products in symmetric fission is determined from
the shift
relatively to this maximum in asymmetric fission. There are 3
figures.
ASSOCIATION: Fiziko-tekhnicheskiy institut im. A. F. Ioffe
Akademii nauk
83SR (15hypico-technical Institute imeni A. F. Ioffe of the
Academy of Sciences USSR)
SUB'i!ITTFD: June 5, 1962
Card 2/2

8/056162/043/005/015/058
B102/B104
AUTHORS: Aorkar,--A,,Fv-r- Kul i kov, A. V., Chizhovq V. P.,
Yivor, I. P.#
Volkov, Yu. M.
TITLE: Emis sion of fast deuterons in the photodisintegration of 0
16
PERIODICAL: Zhurnal eksperimental"noy i teoreticheskoy fiziki,.v.
43, -
no, 501), 1962, 1657-1659 . .1 ./
TEXT: Chizhov et al. (Nucl. Phys. 34, 562, 1962) have found that
the deu-
teron yield from (/-,d) reactions with Li 6 , Be?t B10,11 and Cu
can be
observed only~when E exceeds the kinematic threshold of the
reaction by
about the nucleon binding energy. This rdsult was now verified and
it
was determined which particles accompany the photodeuterons. The
authors
used a cloud chamber filled with He + 0 and scintillation counter
2 16
telescopes in their experiments on the photodiointegration of 0
induced
by E,~.bax=90 Rev. iDeuterons with Ed ~ 11 Mey were recorded by
the telescopes
(accuracy of Z d measurement: +5%) and the energies of the recoil
nuclei
card 1/3

S/056/62/043/005/015-1/058
Emission of fast deuterons in the ... B102/B104
were determined from their tracks. For the N15 nuclei produced in
016 Q'-~p)N15 the range - energy curves were determined. Among the
ster'eophotographs of 27 photodeuterons with E between 11 and 40
Mev there
6 d 14
was none that could be attributed to an 0 V?-d)N reaction. With
yields
of 41% each, the reactions were of type Vdp) and (3'-;dn) with
thresholds
of 28.25 and 31.2 Mev, respectively. The remaining reactions (16%)
were
multipronged stars with at least two particles besides the
deuteron. If
the V,dp) and (/'Idn) riactions are' assumed to occur in two stages
.(emission of p and n after d) the excitation energy of the
compound
nucleus N14 can be estimated. When the low probability of 0 16
(rd)N" is
taken into account, the first excited level of N 14 (O+tT'.1) is
obtained as
2.0 Mev. The emission directions of the deuterons and the
accompanying
nucleons are correlated: in most cases-p-and n were emitted
oppositely to
d. Such a correlation exists only for nucleons with more than 2
Mev.
There are 2 figures and I table.
Card 2/3

Emission of 'Last deuterons in the B102/B104
ASSOCIATION: Fiziko-tekhnicheakiy ine.titut im, As F. Ioffe Akademii
nauk SSSR (Physicotechnical InstiWe imeni A. F. loffe
of the Academy of Sciences USSR)
SUBMITTED: June 29, 1962
Card 3/3

S/020/62/144/003/014/030
B108IB102
AUTHORS: Komar, A- P_-, Academician AS UkrSSR, and Shrednik, V. X.
TITLE: Atomic structure of tungsten microcrystals of up to 60
size
PERIODICAL: Akademiya nauk SSSR. Doklady, v. 144, no- 3, 1962, 541-543
TEXT: Tungsten miarocrystals having radius of some 200 R were studied
by
u3ing an ion projector with helium ions at 9.5 kv. The point of the
projector was cooled with solid nitrogen. The images obtained were very
clear. The image can be improVed*considerably when the point contains
"tubercles" caused by vacuum discharge. Using such a procedure the
authors succeeded in observing the atorale structure of tungsten micro-
crystals having a diameter of some 60 a. The most important English-
language reference is: E. W. U"uller, Adv. in Electronics and Electron"
PhYs., 13, 83 (1960).
0
ASSOCIATION: Fiziko-tekhnicheskiy institut im. A. F. loffe Akademii
nauk
SSSR (Physicotechnical Institute imeni A. F. loffe of the
Academy of Sciences USSR)

)958h
S/020/62 1457002/008/018
B178/B104
94 6c;
AUTHORS: Komar A. F., Acadebioian AS UkrSSR, Kruglov, S. P*# and
_n -,]
-Fo;at_iLn, i. V.
TITLE: Sensitivity determination of a quantometer for energies of
15-300 Mev
PERIO-DICAL: Akademiya nauk.SSSR. Dokladyp v. 145, no. 2f 1962P
309-311
a)
TEXT: A quantometer is used to-measure the area ST i(t)dt bounded by
0
the ionization current i(t) and produced by g-irradiation 6.f a
body, This
area is proportional to t)ie energy current
6
U S
6 'T
where is the energy consumed,-for Ithe production of. ion pairs; e
is the
electron charge; is the mean-ionization loes'l 6 is the density of
the
z
matter; and 6 9is the density of the gas. The value of S as
determined
Card 1/3

/62/145/602/008/0-18
S/020
Sensitivity determination of a... B178/B104
hSSOCIATION: Fiziko-tekhnicheskiy institut im. A. F. Ioffe Akademii nauk
514SR (Physiootoohnical Institute imeni A. F. Ioffe of the
Academy of Sciences USSR)
SUBLIMED: April 14, 1962
MA
M
S EM
C
Card 3/3 Fig. 1

41672
S/020/62/146/005/006/011
B125/Ble6.I
Academician AS UkrSSR, Boch gov, B. Aot
AUTHORSi Komar a
238
TITLE: Fiesion'of U nuclei b~ continuous-spectrum photons with
EYmax - 35 Mev and by 14-Mev neutrons
PERIODICAL: Akademiya nauk SSSR. Doklady, v. 146, no- 5,
1962,'1051-1053
TEXT: The mass and energy distributions o.fthe fragments from
fission of
heavy nuclei by photons and neutrons are. compared for various
angular
intervals. These distributions were taken by means of a double pulsed
ionization chamber. The targett .150 ~g/CU12 uranyln.itrate
deposited on an
aluminated collddion film Of'30 JL9/cm , was.transparent to the
fission
fragments and was attached to the cathode of the ionization chamber.
The
target was bombarclecl by neutrons and y-quanta obtained from a
neutron
generator and from the synchrotron of the Fiziko-tekhnicheakiy
institut im.
A. P. Ioffe AN SSSR (Physicotechnical Institute imeni A. F. Ioffe AS
USSR).
The diagrams E V(E) weie pkotted for five 9-intervals between 0 and
800
Card 1/2

BOCHAGOV, B.A.; KOFAR A.P.- FAjDEYEV, V.I.
Kinetic en'ergy and angular distribution of the fragments of
U238
fission by-neutrons and photons. Atom. energ. 15 no 3:191-194
S 163. imm 16:10)
(Uranium isotopes) (Nuclear fission)

L 18474-63 EW(M)IBM, AFFTC/I~BD
'%CCrSSION 'IM.: AP30055OG S/0057/63/033/008/0949/0953
AIJ 'EMOR: Komar, A. P. Xruglov, S. P. Lopat in, I. V.
TITIZ: Srcmsstrah!un_rr energy Measurement with a "standard"
ionization chamber
SOURCE: Zhurnal tc1chnichaskoy fiziRi, v.33, no.,S, 1963, 949-953
,:OPIO TAGS: Lnor-,Iy moasurement, ga-m-ma-ray brenisstrahlung,
ioniznt:Lon chamber,
standard instrixuartt
PMTI4%CT- The "standard" ionization chxnbor is n simple 130 din"Ictor
cylindri-
cal chninber with copper end platos that was built and calibrated at
the Physical-
Tccluiical Institute, Lenin.-rad, with the intcntio~ that it be
copied elsewhere and
employed, with the Leningrad calibration, as a secondary standard for
the mezsure-
mont of the anorgy flu;% in collimated gai-ma-ray boarz. The
construction of the chaL-
bcr is shown in the Enclosure. The instr=cnt was calibrated against a
calorinoter,-
using sy,,iclirotron.brc:iisstr.-dilung, over the range from 15 to 00
MeV. The sensitivi-
ty is about, 2~1'10-17) coulcmb/,~:eV a-,,.d varies by about 14% over
this range. Tile sen-
sitivity also var,'"s sli_-~itly with the buam diamctcr, dropping by
about 5'14 as the
box-=. dixitater is i-acreased fron. small values to 10~~ --rm. The
papal- also brially
Cord I/Z,,,

L18474-63
II.CUS" 103 NIZ: APIU05LOG
Cuscribos a sinplc instrumant, consistin-r of a standard capacitor and
an electronic
cloctromater, for neasurin.- the ionizntiun, Current. "The authors
express thei:,
[:ratitudo to V.S.1,51,ov, I.P.Mly,*sov, V.M.Suvorov, I.A.Pronin and
Yu.,%.'. Pares kokov ,
participated -Ari the measurements.- Orig.avt.hast 6 figures.
r.!;SGCI, ION: riIzjIW-toRhnicheskiy in!~!--it-ut in-A.F.Iof-fa AN SSSR#
I Leningrad
(-Physico-technica3 Institute, JM SSS!i.)
E'UMIIT ED: 3GJuIG'z
Ulf ENCL:- 01
EU3 CCDE.: 21" NO SCW: CA"D GTI"ER- 001
Card

KOMAR, A.P.; K4UGLOV, S.P.; WPATIM, I.V.
Comparison of-absolute energy measurements in a beam of
bromsetrahlung conducted in laboratories of various countries.
Zhur. eksp.' i teor, fiz. 45 no.3:824-825 S 163. (KMA 16slo)
1. Fiziko-tekhnichoskiy institut imeni A.F. Ioffe AN SSSR.
(BremsstrOlung-Measurement)

cwirig and recovery in N!
AN SSSR. Doklady,*, v 150, no, 5, '963,
n n I-- aging, recovery, Ni-Pe 9
j-ir p o a a o 1 9 work. wau riie T'-ha
7.:n, e a 0,
:-ne 3a~r ~]e
z-e One by vak;uulfil ue~.)un` P n
9 r epLi r .. .....
A42 F-ulsating voltage o' zz :i -,d o L; c,
j I K V
-zi6n-fical-lons reached --s.' -
V --~s are

akademik,---BOMGOVp B.A.;. ~ADEM,, V.I.
KOMAR
Fiaaicn-of TO?2-,ntwleL-by-,14.-Kev.--neqtrans- and -contimmus
.-spectnim photoosvith-an-energy of'E 90*Kev. Dokl.
f fmax
AN SSSR ~ 15P., . no.4:858-461 - 0 0 153. (MIRA 16.-11)
1. kitiko,~-tekhnicheskiy institut im. A.F. Joffe AN SSSR.
2. AN UkrSSR (for Komar).

KRUrTT,OV, S.P.; LOPATIN, I.V.
lordzation. levices for the measurement of energ.-r in ra7 teams.
Med, rado 9 no.7:46-51 Ji 164. (MIRA 18:5)
1. Fiziko-tekhnicheskiy institut imeni Ioffe AN SSSR.

ACCESSION NR: AP4031188 S/0056/64/046/004/1497/1499
'AUTHORS: Bazhanov, Ye. B-1 Komar,.A. P.: Mulikov, A.-V.
TITLE: Photoneutrons from U-6 and Co-59
SOURCE: Zh. eksper. i teor. fiz., v. 46, no.,4, 1964, 1497-1499
TOPIC TAGS: lithium-6, cobalt-59, photondutton, photoneutton reac-
tion cross section, integral cross section, giant pesonance splittinjj
hydrodynamic theory
6
ABSTRACT: The cross section of the photoneutron reactions on Li
and Co 59 were investigated in the synchrotron of FT1 iM. A. S. loffe,
AN SSSR, using a technique where slowed down neutrons were registered
by BF counters. The data obtained confirm the presence of. a broad,
3
resonance in'the energy range 7-17 MeV, a considerable dip at 17-19
MeW and a rise above 19 MeV.;, The data in&4~pte the presence of two
Card 1/4

AccEssiON NR: AP4031188
additional maxima,,4t 20-24 and 20-30 MeVj w~iich were not indicated
'in the recent investigation by Costa at al. (Phys. Lett. v. 4, 308,
1963)1. The resul~d indicate tha,~ the U6 has~high polarizability
and ~he theoreticad' calculaticins of J. S. tevinger (Phys. Rev. v.
59
107,11554, 1957) do 'hot apply to light nuclqi.,,, in the case of CO
the -qesults are in,,. good agreement- with the; pridictions of the
hydro-
dynamic model of qY.,,=,oto, and Danqq. Orig.,,art. has: 2 figures.
ASSOCIATION: Fizi-ko-tekhnichoskiy institut im. A. P. loffe Akademii
nauk SSSR (Physic6technical Institute, Academy of Sciences SSSR)
Sumar-PED: 2lNov63 DATE Aco.- o7z4ayr*4 ENCL: 02
SUB CODE., NP NA REP SM 001 OTHERs 003
Card
~/4

. .........
ACCESSION NR-. Ap4oi9972 3/0020/q4/154/006/1318/1320 J
:AUTHOR: Komar, A. F* (Academician); Kruglov, S. P.; Lopatin.-I..V.;
Mus, K. 7.
TITLE:lConstant sensitivity quantan-t.er for;gamma radiation of
.energy above 15 Mev
SOURCE; AN SSSR. Doklady*, v. 154, no. 6, 1964, 1318-1320
:TOPIC TAGS: gamma quantometer, Samma radiaition energy measurement,.
constant sensitivity quantometer, quantomeiter, ionization chamber.,
pultiplate i9n~zation.chat#ber
ABSTRACT: The.gamma, quaintometer is a-multiplate ionization chamber
1. used fbr measurement of the..en.ergy in a beam of gamma photons.
Its
"ionization current depends on the partial ionization in differeiLt
sec4
.,~tions of the bhhmber. The'purpose of the present work is to obtain
,,constant sensitivity of the quantometer
in various-energy ranges or
gamma rays. Thi
41s achieved, first,.-by the construction of a new.
*del permitting a better Integration of the ionization in different
1/2

A c a d e mi c ian kN S R
a -n d f o r-I o t h,4 T, i t
t h
tu t
OIL I L wai9 1 1 C d j f f
ua v i;

fA ad a v i th th e me I t i ng po f, 3 r o
c.%perimeat was uadgrtalt~u lLeorwa-
,~arsiotig anti curvc~.ture t F.. r--
h
and
t~ hi c
Crystal u 'I a v-I
"Maern! rtipta"
i~t;,' hre,~kiloqn thore via i 1 9 u r-,
i eve that a I iquid :A)a rs
J-I'- f-hip, SuplAetcen"ed by- P,j [).Li V P fl k-

AP4048036
i- a r, A. P. (Academician AN U),r---~' S,~ P
and 81hape of crns5 causing
._~3 autoelectronic em-,cs-lon cl~ C t a -, S
~--;SR. D,3kLady*, v. 158, no.
;r7,ani_c semiconduct.
r, tnlcro-
-irpose of the invest iga~ "t j-
p
-7lat1ion on the cross sections "'ZU C or" ex e s
..ie unusual electron-m-icros cope-
~Ihich low-molecular compou.-ids ai.- TI- o ub -
on this subject is observed
.-requently attributed to separ-al-i. Aaother pur
._n%-estigation was to chec?. or e -.ieor,, of

-%P4048036

of these spots, proposeid~
e D ;tr~Ors else-

Komar and A. A. Komar, Zh!'F
-h e
T

Br)m(~ rail-
known radius