SCIENTIFIC ABSTRACT FIRSOV, YE.I. - FIRSOV, YU, A,

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000413220018-0
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: June 13, 2000
• Sequence Number: 18
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

S/0089/64/016/004/0354/0355
ACCESSION NR: AP4029698
AUTHORS: Bogdanov, A. P.; FirsovjYe'._,I.
TITLE: Gamma-radiation.from the IRT-2006 reactor of the Belorussian
Academy of Sciences
SOURCE: Atomnaya energiya) ve 16, no. 4, 19641 354-355
TOPIC TAGS: radial channel, IRT 2000 reactor, gamma radiation,
neutron beam, lead collimator-, single crystal, electron photomulti-
jplier, automatic recorder, sp9ctrometer, tangential channel, half
lif e period
ABSTRACT: The gamma-radiation spectrum emerging from the fuel core
has been measured on a horizontal radial channel of an IRT-2000
Ireactor. A 20 cm-thick plug consisting of a paraffin and boron
carbide mixture was used for.filtering the neutron beam, and lead
collimators were utilized for the formation of a gamma-radiation
beam. A NaI (TI) single crystal measuring 70x70 mm, combined with
an electron photomultiplier, was employed as a spectrometor. An
AI-100-1 multichannel analyzer was used for an amplitude analysis,
..Card 1/2--

ACCESSION NR: AP4029698
the resulting data being recorded by an automatic device. The poaks
discernible in the spectrum produced in the experiment corresponded
to gamma-radiation with energies of 2.2 and 7.7 Mev. Similar method3l.
have been used to investigate the spectrum of a residual gamma-
-radiation in an idle reactor after it was working for a long period
of time at 1,000 kw capacity. The various spectra recorded over
periods of 6, 20 and 70 hours following the stoppage of the reactor
revealed gamma-radiations with energies ranging from 0.9 to 3 Mov.
A further checkup on the behavior of the long-lived acitivity spoc-
trum was impossible as it would have required the idling oZ the re-
actor for a lengthy-period of time. Orig. art. has: 4 figures.
ASSOCIATION: None
SUBMITTED: 16ju163 DATE AcQ.-olmay64 ENCL: 00
SUB CODE: PH9 NS NR REP SOV.: 002 OTHER: 000

BOGDANOV., A.P.; FIPSOV, Ye.i.
Uoe of a luminescent spectromiter in studying 6-rays frorn
the (n,P reaction. Dokl. AN!BSSR 8 no.6:376-378 je 164.
(MIRA 17: 10)
1. Institut fiziki All BSSR. Predstavleno akademikom AN BSSR
B.I. Stapanovym.

RUDAK, E.A., le I.
De'erminij th in pf the o.416 -mev. level in the Fe55 nucleus
I p a sp p reactions. Dokl. AN BSSR 8 no.8:514-515
from (d p and (n,
Ag 164. (MIRA 171ll)
1. Institut fiziki AN BSSR.
1-~,WhtK i,-- F-*,
d OW 4-11
~ -~ ".1,- 412.01 1P-1- -

BOGDANOV, A.P.; FIRSOV, Ye.l.
multichannel coincidence speotrwiter on the basis of Al-100-1.
Prib. i tekh* akap* 9 no.305-39 MY-Je 164 (MIR& 18ti)
1. Institut f1siki AN 136SR,

Peb D lAAP
kP5-09827
A Firs "sa-Za-
U- A
ay spectr,' -Prom tbe--(n,y) reaction in I:r-50, C.--52s
Yademaya fizika, v. I, no. 2, 1965, 235-249
T;uma spectrum, ma-ut-ron gjanuna reaction, A-romium iso-
r e, ~7; a~-.m a sq - t r i t ion
z~ -tra of gaimma ra~,,s accomp-anylnq c~f
IP Trli- a-r S I nq
7n 2
LI,
-Aj
x
. . . . . .........
EMW M.
1'249
LT

ACCESSION NR. APS009827
50. The samples were separatod Cr isotopes 1-a-.ring --'70 g-barn
-.,te i--)rocict of Lhe mass --jid th-c- (n.,Y) -T-nc--, -Sect:o-l. Err-2rgi-es
a--e t abu ar-ed
--SltiES of observed gw%-na rays n ~'r
"n those obtaii-,e-J L', prec-1, -iaz,-=- The
2~ 1 -eL; 0 iT
thank L. V. Groshev and A. m
art
a~,C, for direct ex.)eriiuental assi5~.aic-
f c,; and 3 tables.
v SS nsti-
iistitut fiziki
Academy of Sciences
NLTP
305

Ai 4582-66 EWT(M)/EWP(t)/EWP(b)/EWA(h) IJP(c) JD
ACCESSION XR.- AP5020257 UR/036T/631002./ool/0084/0091.
AUTHOR: Loskutova, N. C'
Go-,_Rudak Ee A.; Firsovs Ye Is
54 55
TITLE-. Ga- ray spectrum from the reaction Fe (n, y)Fe
SOURCE: Yadernaya fizika, ve 20 no* it 1965, 84-91
TOPIC TAGS: 1rcn%1aMMa spectrum amma. transitionj radioactive decay scheme
J9
ABSTRACT: The reaction was induced with thermal neutrons derived from.the IRT
reactor of AN BSSR and investigated with apparatus designed for investigating
(n, y) reactions in separated isotopes by the Institut fiziki (Institute of Physics)
AN BSSR, coasisting of a Compton magnetic y spectrometer of 2% reglirticn and 0,3-~
Mey y-ray threshold. The iron sample was enriched to 78.1% in Fe . The follow-
ing y-ray energies (in Mev) and intensities (% in parentheses) were observ .ed: 9.31
(61)t 8.98(12)q 7.2T(3.0) doublet, 6.62(20'o), 6.2T(3.0), 5.75(2.5), 5.50(2.0).
5.37(l.3). 4.'r3(3.0) doublet, 4.55(1.4), 44.6(1-5), 4.17*(1.5), 3-79v(l-7),,3.38*
(1.5), 3.oT*(4.o) doublet, 2.90*(1.0), 2.67*(1.5), 2.63*(1.0), 2.47*(2.4), 2.o5*
(2.5). 1.92*(2.5), 1.63*(1.5), 1.5*(1.5). 1.32*(1.0), 1.24*(l.o), and the groups
of lines at 0.93*(10.0) and 0.41*(29.0). Asterisk denoteB -y rays oloserved for the
first time)* A scheme for the decay fo Fe55 from the capturing level is proposed
Cord
1/3
09011,007
-------------

t P-,"'o-

L 4582-66
ACCESSION NR: AP502025T ENCLDSUPE: 01

RR

-4-

I
--is
4) &
Mow b a I.
R8
. cl
55
Flig. 1.~ Scheme of gamma transitions.of Fe from the
capture state
C
rd 3/3
a

g r"3 O~ ,I ,
142
" , , 1 --l- I.- -
EN
A A
N M -
li A v -,Zi - -a~5

P-~ nz ~Z~ -
SOUIIfE: Atommaira energiYa, v. 18, no. 3. 1965, 285-237
TOPN TAGS: garrina MY, isotope, s-pectroscopy, spectrometer
11 -bL' -P! 3tud--; -er. of ganna emission in (n, gaff-m) reaction on -;rzxiou-s llzotovea weri
;t "ang-entlal reactor colurrm uning i
.-r~ nr-A
I
thermal neutronE, wa-4 about 3 x 10 - --ea:n of
va c o 11 -4.mated by a s7stem of lepl
`..t 'nel to the Compton spectrometer ral'a'or. -1: -men
~;pe-trometer raaiRtcor wqB o,m. I
--i:stor withir, 1' fr37n the Inc-IJen' r-t-ar r;;?r~! e t i C
and mom-*?ntum analyzed, 0i" g. Qrl . h&8 14
I Card 112

1 i-2, t, n.)ne
ENCL, 00 NP, OP
?OA3.r64
OMR, 000 NA
2/2
sa
MM
n- 4THF,

FIRSOV, Ye.l. [Firsaut 1A.1.); RUDAK, E.A.
Analysis of background conditions in the tangential channel
of the motor of the Radio &ginearing Institute of the
Academy of Sciences of the White Russian S.S.R. Vestai
AN BBSR, Serefize-mat.nay. nolt73-76 165.
Analysis of the spectra of separated Isotopes from the
(n, [) reaction using the reactor of the Radio Engineering
Ins itute of the Acadeqr of Sciences of the White Russian S.S.R.
Ibid.t77-79. (MIRA, 19a)

L 1492L" W(m) DJAAP
26
AM Nx: AF6002469 SOURM CODE: UR/0366/65/002/011/0522/05
AUTHOR: Bogdanov, A* 1!!Leush, V. N.; Firsov, Ye. 1.
ORG: Institute of Physics, Academy of Sciences BSSR (Institut fiziki Akademii23
nauk MIF
TITIZ: Determining the part, ter for a mixture of Ml,and E2-radiations for the 1-
0.341 Hev transition In the TL49 nucleus /7
SOURCE: Zhurn.al eksperimentalIncy I teoreticheskoy fiziki. Pis1ma v redaktsiyu.'
Prilozheniye, v. 2, no. 11, 1965, 522-526
TOPIC TAGS: titanium, gamma radiation, gamma transition, transition radiation
ABSTRACT: The authors attempt to resolve the contradictory data in the literature
on the multiplicity of y-radiation for the 0.341 Nev transition in the Tj49 nucleus.
One source finds this transition to be a mixture of Ml+E2 with a mixture parameter
,of -0.1 for +2.2. Another work finds evidence of a pure Ml- transition. The auth-
-ors irradiated a titanium target 8 m in diameter and 2 mm thick with a, collimated
neutron beam with a flux of 4.106 neutrons/CM2.sec. The Y-radiation dettectors were
two scintillation counters with thallium-activated sodium iodide crystals 70 sm in
.Card 1/2

L 14006-66
ACC HR: AP6002469
diameter and 70 mm high. The'resolving power of both spectrcmeters was 10% at a gam-
ma energy of 661 kev. The coefficient A2 is found to be -0.05 t 0.010, 111lich is
somewhat lower than the theoretical value for:a' pure Ml- transition*(A2 zz -0.071).
A curve is given showing the coefficient A2 as a function of the mixture parameter
for a mixture of MI and E2 radiations in the.first transition. This curiN3 shows a
mixed transition with a mixture parameter of -0,06 or +2.0, The authors:.3re grate-,
ful to P. A. Krtq)chitskJLy and G. A. Lobov who were responsible for the instigation
:of this experiment. orig. art-.-fii==igures.-
ARIG REF., 001/ OTH REF: 005
,SUB CODE, SIMH
DATEt 250et6S/
.Card 21214-1

BOGDANOVO A.P.; TADEUSH, V.N.1 FIRSQT,-...Ye
Determining the parameter of the mixed,5 and E2 radiations
for the 0.3411 Mev, transition in the T nucleus. Pis$., r
red. Zhur. ekspere i tearet. fiz. 2 no, 11022-526 D 165
(MIRA 19 il)
1. Institut fisiki AN'ESSR. 9ibmitted October 25, 1965.

S/04-/z2/026/008/022/02B..
B1 047BT
102
AUTHORS: Fir& _Ye__Z-1 Pivovarov, S. P., and Latyshev, G. D.
'V
TITLE: Gradl nt meter based on a supergenerator controlled by
nucl r precession
PERIODICAL: Akade iya nauk SSSR. Izvestiya.. Seriya fizicheskaya,
Vr 2 no..8, 1962, 1088-1090
TEXT: An apparatu f9r determining deviations of magnetic field strengths
within the r 1 3'_ 10-6 from the theoretical value is.d4scribed. The,
P !"i ) orts with a supergenerator (Fig. 2). The circuit of
a'paratus'(Fig,
onle supergener or.":s attached to the magnetic surfaca, that of the other. V/
ene
J
r
r6 r
."~o
oA is moved f m p .int to point in the field. The-difference of the
nt
'oved
f
m
su.6ergenerator reqlenc~tes characterizes the homogeneity of-the field, and
'erator
re
enc
m
d
ne
0m
he
is determined om~jhe tissajous figures an the oscilloscope. The
~ lb
'a twe;
distance betwe t~d pickups is 'evlo mm' the maximum inhomogeneity is
' pi
4 5"1o-3. The a14
a
The 3
1 3 figures.
, tilr I
ASSOCIA'ftON: st1jut yadernoy fiziki Akademii nauk KaiSSR (Institute of
10 t
4 u
clear Physics of the Academy of Sciences KazSSR)
Card 1

PIVOVAROV~ S.P.; FIRSOV?_ ; YASNIID, O.N.; IATYSHEV, G.D.
Comparison of circuits for paramagnetic resonance detection.
Trudy Inst. iad. fiz. AN Kazakh. SSR 6:119-123 163.
(KIRA 16s10)

L 1~576-633 EPF (O)AVP 0 )/ZWT (.I)/EWT (M)/BDS/BEC (b)-2 AFM/ASD/
IJP(C) Pc-4/Pr_4/Pi_4 .. GGAQW04AWN
-ACCESSION NRs AT3007856 5/2707/63/006/000/0124/0128X
AUTH OR: rsov"Ye P.; Pivovar 'I. P,; Laty*shOv, G.
oir,
TITLE: Simple magn-tometer based on the principle of electrom'
RA_KamaSRetic resonance;
SOURCE: AN KazSS.R. Itistitut yadernoy--fiziki.' Trudy, v. 6,~ 1963.
'fizike vysokikh enefgiy i elementarnykh chastits,
Issledovaniya pp
124-128
TOPIC TAGS.: elactron paramagnetic riesonance magnatomdter, magnetoM-
a t e r, dLphenyl:pjcry~hydrazyl, ~s od m ammonia solution, electron
paramagnetic repo nance, electron paramagnetic resonance signal,
magnetic field measurement. alectrol paramagnetic resonance crysta
i frae radical pa;ramagnetic `resonance,,I~free radical cyrstal, pre-
cision field meter, magnetic field meter
ABSTRACT: An iniltrument based on.the EPR of.free radicals'-Ifor
makLng precise measurements of magnetic fields of 70-800 o1 with
an accuracy of Oil% is,desc.ribed in-detail, and its performance
Card _'1/2

L19576,763
ACCESSION NR: AT3007856:
is investigated analytically. The device comprises a magnetic
resonarce pickup, a high-frequency generstoe, a modulator, a magnet,,
and anjindientore Diphenylpicrylhydrazy, -J'i~ryst.ais Qfne width of
or a solution of sodium in ammonia line width of OAS oe)
2.7 o0 I
are,ugad 45 working substances. AnAlytic2levaWations indicate
that~.Jhe output signal does not de and significantly*:on frequency
P
q a widefroquency band. This makes the device*particularly
U
ithi
siInpli tb operate,, Orig. Art. has; 4 figures, 10 formulas, and
1
ASSOCIATION: none,
SUBMITTED; :00 DATE ACQ: V8Aug63 ENCL: 00
SUB CODE: PH ~'.NO REF SOV: 002 OTHER". 000
;ard 2.2

Steelt Structural
Crosscut drawn steel sheets, Stroi. prom. 31 No. 2, 1953-
9. Monthl List of Russian Ac'cessions, Library of Congress, June -1953, Uncl.

Card ilrl k //2~6
53
,

Author Firsov, Yu. A.
Pikus, G. Ye.,
Title Conference on the theory of semiconductors
Periodical Zhur. tekh. fiz., 25, 110 13 (November), 195r~-, 2381-2394
Abstract A conference on the theory of semiconductors) called by the Comission on
Semiconductors in the Presidum of the Academy of Sciences USSR, was held
in Leningrad from 4 to 8 February 1955. Participants were leading physi-
cists and theoreticians of Moscow, Leningrad, Kiev, Sverdlovsk, Nhar'kov,
Chernovits and other cities, who are working the field of solid state
physics. Academician A. F. Ioffe opened the conference with a report not-
ing that a number of experimental facts contradict theory (e.g. various
valuesof effective masses in their determination by different,methods, ano-
malous temperature behavior of mobility and thermo-emf, etc.), that exist-
ing theory is actually inapplicable to many semiconductors (e.g. zone the-
ory issuing from distant ordering is inapplicable to fluid and amorphous
semiconductors, whose electrical properties do not differ from those of
crystal semiconductors), that the existing theory of mobility is inappli-
cable to semiconductors with small mobility in which the free path length.
calculated from experimental data is less than the wavelenLr% of electron
and often even less than the lattice period, and that relations have yet
to be found between the various properties of semiconductors (electric,
magnetic., thermal, mechanical) and atomic characteristics. The conference

Card 2/4 Pub- 153 - 20/26 FD-
heard and discussed 12 reports on the following 9 most important clivisions
of semiconductor theory. 1. Theory of polarons: S. I. Pekar, "Present sta--
tus of semiconductor theory" (to be published in next issue). M. F. Deygen,
"Theory of optical, magnetic and electric properties of metdl-ammoniacal so-
lutions." II. Polyelectron, theory of semiconductors: S. V. Vonsovskiy,
"Certain problems of the polyelectron quantum-mechanical theory of semicon-'
ductors" (to be published in ZhTF). Ye. P. Agafonova, "Accelerating action
of external electric field on a system of interacting electrons in a crystal
lattice" (she showed that in the polar model the acceleratiny, action of field
on a system in nonpolar state is practically absent inspite~of nonzero prob-
ability of polarization of the system, i.e.in spite of probable formation of
pairs and holes by the field; and that if the system has a finite number of
pairs and holes then consideration of thermal motion of lattice gives an ex-
pression for electrical conductivity in weak field like that in the mono-
electron theory). V. L. Bonch-Bruyevich,, "Zone scheme of homeopolar crystal
and oscillations of the crystal lattice." III. Magnetic properties of semi-
conductors: A. G. Samaylovichand.L.L. Korenblit) "Certain problems of the-
ory of magnetism of semiconductors." IV. Theory of excitons: A. 1. Ansellm
and Yu. A. Firsov, "Length of free flight path of nonlocalized exciton. in
atomic and ionic crystals." V. Theory of mobility thermal and galvanomagnetic
effects: T. A. Kontorova, "Theory of mobility of current carriers in atomic
semiconductors." VI. Theory of fluid and amorphous semiconductors: A. 1.
Gubanov, "Zone theory of fluidity for close ordering" (the author solved the
one-dimensional problem earlier, in ZhETF, 26 (2), 139, 1954). vii. Theory
of radiatorless transitions: M. A. Krivogglaz, "Theory of thermal transitions.t
VIII. Theory of rectification: K. B. Tolpygo, "Distribution of concentrations

Card 3/4 Pub- 153 - 2o/26 FD-31(54
of carriers and ratio of electron and hole current." IX. Catalytic action
of semiconductors: F. F. Vollkenshteyn) "Mechanism of catalytic action of
semiconductors" (the author expresses the assumption that electrons and
holes on the surface of a semiconductor can play the role of free valences.,
and that the atoms anI molecules adsorbed on the surface can capture these
electrons).
In his concluding speech of the conference A. I. Ansel'm noted the following
principal directions of the future development of solid-state theory: poly-
electron theory of the solid state; application of general methods of quantum
theory of the field to the problem of interaction of electrons with lattice
oscillations; electrical and magnetic properties of crystals (theory of di-
electric constant., diamagnetism, paramagnetism, and ferromagnetism of crys-
tals); energy spectrum and mobility of current carriers in amorphous and
fluid media; kinetic processes in semiconductors and metals (electrical con-
ductivity, galvanomagnetic and thermomagnetic effects, influence of strong'
fields); theory of ion crystals (polar theory); theory of kinetic processes
(electrical conductivity, galvanomagnptic and thermomagnetic effects) in
semiconductors with small mobility where the concept of free path length
loses sense;'optical properties of electron crystals (internal. photoeffect,
absorption spectra, theory of the exciton); dynamics of cryst-al latticc (os-
cillation spectra, heat capacity, heat conductivity); phase transitions in
crystal lattices, the theory of defects and impurities in crystals; nonsta-
tionary processes in a semiconductor (variable external fields), radiospec-
troscopy of solids, and cyclotron effect: theory of rectification and

card 4/4 Pub. 153 - 2o/26
FD - 3164
amplification in semiconductors, and theory of semiconductor devices; the
electronics of thermoelectronic emission, secondary electron emission, self-
electron emission, external photoeffect of interaction of ions with the sur-
face of the solid; theory of catalytic action of semiconductors.
Submitted April 4, 1955

USSR/Solid State Physics Solid State Theory. Geometric Cyrstallograj)hy., E-2
Abst Journal: Referat Zhur - Fizika,, No 12j, 1956, 34572
Author.: Ansellm, A. I., Firsov, Yu. A.
Institutiont -11mm. Le~l'*nq 1-06
P
Title: Mean Free Path of Nonlocalized Exciton in an Atomic Crystal
Original Periodical: Zh. eksper. i teoret. fiziki, 1955, 28., No 2, 151-159
Abstract: The mean free path 1 of a nonlocalized exciton, due to its interaction
with the acoustic (thermal) branch of the lattice vibration, is calculated. The wave
f1mction of the exciton is calculated in the effective-mass-method approximation. It
is proposed that as the exciton absorbs and emits phonons, it does not become excited
and it does not become disassociated. The processes of the vanishing of the nonlo-
calized exciton as a result of its localization and the recombination of the electron
with the hole w-Ith a transformation of the excitation energy into heat and light are
not considered. The analysis of the expresEion for 1 shows, that 1 of the exciton,
like that of the electrcm (hole), is inversely proportional to the absolute tempera-
ture, but unlike the electron (hole) it depends on the energy. The character of this
dependence is related to the ratio of the effective masses of the hole and of the
electron and of the interaction constants.

USSR / Electricity G
Abs Jour : Ref Zhur Fizika, No 4, 1957, No 9677
Author : Ansel'% A.I.y Firsov Yu.A.
Inst : Fhysico-Technical Insti_t-uM7-Academy of Sciences USSR,
Leningrad
Title : blean Free Path of Non-localized Excitaton in Polar Crystal
Orig Pub : Zh. eksperim. i teor. fiziki, 1956, 30, No 4, 719-723
Abstract : The author calculates the length of the mean free path of
the non-localized exciton in a polar erystal, due to in-
teraction with thermal osciAIA ions of the lattice. The
non-locali2ed exciton is considered as a hydrogen-like for-
mation of an electron and a hole.
Scattering of such an exciton is due to interaction between
the electron and the hole with the longitudinal optical vi-
brations. An estimate shown that under ordinary conditions
the probability of excitation or dissociation of the exciton
Card 1/2

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
USSR / Electricity G
Abs Jour : Ref Zhur - Pizika, No 4, 1957, No 9677
Abstract : upon collision is negligibly small. He therefore takes into
aecou~t such collisions between the exciton and the photons,
at which no dissociation or excitation of the exciton takes
place. It is also proposed that the time of the mean free
path of the exciton is much lessi than its lifetime.
Card 2/2

AUTHOR: Firsov, Yu. A. .57-10-3/33
TITLE: Note on the Magnetic Susceptibility in Semiconductors of the
Tellurium Type (Magnitnaya vospriimchivoet' v poluprovodnikakh
tipa tellura)
PERIODICAL: Zhurnal Tekhn. Fiz., 1957, Vol. 27, Nr lo, pp. 2212-2228 (USSR)
ABSTRACT: With reference tothe publication of the author in ZhETF, 32,(6),
135o, 1957, the magnetic properties of the identical semiconduct-
ors are investigated under the same assumptions on the position
of the extremal values. J.M. Luttinger showed (Phys.Rev.,lo2,
1030,1956) in the quantum theory of cyclotrone resistAnce,that
in the oase of a meeting of the zones the energetic a- ectrum of the
.P
current carriers in a magnetic field for small quantum numbers
N cannot be determined according to the quasi-classical method,
which considers carriers of different type (for ex. the two ty-
pes of holes in p-germanium) independently. Therefore here the
order of magnitude of the share of these small values of the
00 - E(N)
quantum numbers in the sum Z(T) . Ze kT is investigated.
N-0
It is shown, that the magnetic susceptibility cannot be computed
Card 1/3 from the sum of the magnetic susceptibilities of the carriers

Note on the Magnetic Susceptibility in Semiconductors of the 57-10-3/33
Tellurium Type.
belonging to these colliding zones, for the case of the zone
collision point. Carriers of different type cannot be consid-
ered to be independent and the transitions between the collid-
ing zones cannot be neglected. If this circumstance is taken
into consideration leads already in the case of weak fields
( - H ,,,~' 1 1-1 /kT>~ I and PF
P;/2m/)kT. is the Fermi
Monent-u!.'I. There are 4 4~gures. The'most- important English-lanZuage
rep
forence is-. R. Newman.''Phys. Rev., 111,,1-516, lgrS.
Card 4/5

S/181/62/004/005/020'/055
The role of optical phonons in.infrared..... 3125/B108
". SSOCIA'7'IO'N: Institut poluprovodnikov AN SSSR Leningrad (Institute of
Samiconductors AS USSR, Leningrad)
SUB4':ITT-'-D: January 2, 19062
T
*Card 5/5

GUREVICH, V.L.;.FIMOV,. Yu.A.1 URDS, A.L.
New type of magnetoresistance oscillations in semidonductors and
semimetals, Fiz,tver,tela 4 no.7s1813-1819 Jl t62.
(MM 16:6)
-1. Insti~tut,..,poluprovodnikovAN SWR, Leningrad.
(Magn e to ie4ilitim~ e (semic6ndudtori--'Electric propertii-s)
z ME jiil-t V~
RE
"ROM MR J--

FIRSOV, Yu A
Theory of the HaU effect in low-mobility semiconductors. Fis.
tver tela 5 no.8t2l49-2169 Ag 163. - (MM 16:9)
1. Institut poluprovodnikov AN SSSR, Leningrad.
(Hall effect) (Semiconductors)
WE
V;
l-
aw
t

LAWS IoGo;-LIRSOVZ.LUAL-'..
Mobility of polarons of small radius at low temperatures. Fiz.
tver.tel&5 no.10:2799-2817 0 163* (WRA 16:11)
1. Institut poluprovodnikov AN SSSR, IAningrad,

43374
8/056/62/043/005/038/058
B102/BiO4
AUTHORSs Lang, I. G.j Fireovo Yub L&
'TITLE;i Kinetic theory of semiconductors with low mobility
PERIODICALs Zhurnal ekoperimentallnoy i teoreticheskoy fiziki, v. 43,
no. 501), 1962, 180 - le6o
TEXT: A certain type of semiconductors is'characterized by very low
carrier mobility (ut-1 CM2/v.sec) and, at T >p%ebyO by a typical tempera-
ture dependence: u-Jexp(-i; /kT), where Ea is-the activation energy (cf.
Phys. Rev. 112, 1861, 19581 J- Chem. Phys. 26; 582, 1957). This u(T)
dependence of the low-mobility semiconduct*ors can be explained only by
assuming multiphonon scattering when strong interaction exists between
carriers and lattice vibrations. At T< TDebye ~he carriers are nonlocalized
polarons with small radius. There exists a temperature range where the
indeterminacy of the polaron energy exceeds the polaron band width
(for k~ A Ep ) where the superbarrier jumps contribute only little to the con-
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Kinetic theory of semiconduct'ors ... B1.00104
duotivity. The kinetic theory for this range, and for higher temperatures
(T> T where classical superbarrier jumps of the carriers from site to
Debye
site are the main mechanismi is derived and discussed in great detail. The
time between these site-to-site jumps 6t is less than the characteristic
time t of tunnel transitions but much greater than the collision-induced
p
time t0 of jumps$
/P>Al>lo, to < o)~', At >
1P =__L_A-eSr, to_ A e'- (40)
AEP 7 wit J310
t-, is the frequency of longitudinal optica 1 phonons, J is the width of the
0
conduction band. In addition the inequalities
q. = J'1(E,,kT)t- two < I I T- C. t. > NAP.., (41)
will be valid, demsnding a narrow conduction (or valence) band. This is
the case e.g. for NiO-type semiconductors. The electrical conductivity
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Xinetic theory of semiconductors ... B102/B104
due to the above mentioned jumps will be proportional to exp(-Ea/kT) also
in a wider temperature range A/2 . For the polaron-phonon scatter-
if 12 "r4
ing a transfer equation is derived by which various kinetic coefficients
can be calculated. There are 3 figures. The mbst important English-
language references ares 1. lamas.hita, T. Xurosawa, J. Chem. Phys.
Solids, 5, 34w 19561 J. Phys. Soc. Japan, 15, 802, 1960; H. Kubo$ J. Phys.
Soc. Japan, 12, 570, 1957; G. H. Wannier, Phys. Rev. 52, 191, 1937.
AISSOCIATIONt Institut'poluprovodnikov Akademii nauk SSSR (Institute of
11 Semiconductors of the Academy of.Scienoss USSR)
SUBMITTEDs June 6, 1962
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LANG, I*G,;_gj.EL-DQV7m4"VAF%
Mobility of small-radius polarons at low temperatures. Zhur. eksp.
i teor. fiz. 45 no.2:378-380 Ag 163. (MIRA 16:9)
1. Institut poluprovodnikov AN SSSR.
(Polarization (Nuclear physics))

- GUR-WIC.1i,,-V,-L.;-PARFE=-VRi--V-.-,--FjpBOV, Yu-.-Aj-SHALYT, -S.- S.
------------
'I The investigation of a new type oscillations in the magneto-resistance." Usic]
report submitted for Intl Conf on Physics of Semiconductors, Paris, 19-24
jui 64.

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NR: AP4043652 S 5f /f~ 4 /'r 4 7 14 /0 7 4 3
AUTHOR -Gurevich, V. L.; Eiraov, YU. A.
TITLE- New type Of oscillations of longitudinal magnetic resistance
of aemiconductore
SOURCE: Zh. ekspert J teor. fiz., v. 47, no. 5, 1964, 734-743
TOPIC TAMSt magnetic rediatince:t semiconductor, electron phonon
interact-on, elastic scattering, oscillation
ABST'I'LACT.- Transverse Oscillations were predivted theoretically by
aULA-~-ES MEW v. 40, 199, 1961 and v. 41, 512, 19D and
served e-I.-perimentally by S. M. Puri and T. H. G-eballe (Bull. An.
Phys. Soc. v. 8, no. 4, 1963, 309 ). In this axticle the authors
develop - theory for the oscillations of the langitudinal -magnatic
e, caused by resonant scattering c)f f lectror-is Dptl::al
mitronq magnetic field

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