SCIENTIFIC ABSTRACT YAKOVLEV, V.A. - YAKOVLEV, V.A.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001961920008-5
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: March 15, 2001
• Sequence Number: 8
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

YAKOVLEV, V.A.9 inzh.
-------------------
Deve:Lop a.perfect design of a slip catch. Bezop.truda v prom- 4
no.6;..17-32 Je 160. (KMA 1413)
1. Trest Kharlkovneftegazrazvedka.
(Pulleys)

T\ I
YAKOVIXV9 VoYse . inzh.
Automatic switching-out of winches in swabbing wells. Bezop.
truda v prom. 4 no.10:33 0 160. (MIRA 13:11)
1. Treat Miartkovneftegazrazvedka.
(Oil well drilling)

TAKOVLIIV, V.A., inzh.
Automatic device for switching off the U2-4-5 draw works in
swabbing operations. Neftlanik 5 no.6j22 Je 160.
(KIBA 13S7)
1. Trest Kharlkoneftegazrazvedka.
(Hoisting machinery)

)LAKOVLEV, Lta1iX Arkadlyayichi. LATUNINA, Ye.I., ved. red.; VORONOVA,
TN., tekhn, red.
Diater exclusion in air and gas drilling; drilling practices
in forei gn countrieslBor'ba s vodoproiavleniemi pri burenii
skvazhin a produvkoi zavoia; zarubezhnyi opyt. Moskva, Gos-
toptekhizdat, 1962. 52 p. (MIRA 16:4)
(Oil well drillihg)

V.I., kand.tekhn.nauk; RUZIYEV) B*T91 inzh.; YAK9 y,.,.V.A., inzh.
BOCHAROVP
A11tomatic device for controlling humidity In cloth. Trudy Frunz-
politekh. inst. no. 6:85-88 062. (MIRk 17:9)
mampw-'g IBM
q m

YAKOVLEV V.A.
:~:J-
Lifetime control of bits .dth reduced and small diameters
at great depths. Izv, vys, uchebe zav.; neft' i gaz 6 no.10:
25-28 163. (MIRA 17:3)
1. Llvovskiy politekhnicheskiy institute
~
g,
w

ZUBKOVt Ya.S.; MOSKOVKIN, I.V.; EDERLIMAN, Ya.A.; YAKOVLEV, V.A.
Efficient functioning of bits. Haft. khoz. 41 no. 11:57-59
N 163. (FIRA 17:7)
-3,
MiT,
glmg-%
A. ~Ilffiwmflffl

YAKOVLEV V.A.
Efficient treatment of bits in the drilling of deep wells cf
decre&sed and small diameters. Neft. J gaz. prom, n0.3.-24-28
J1-5 164. WrRAL 17-. 12)
`3 -
g -;y qz
j; ~ejgg iggi ggk
P~
NO

YEREMENKO, T.Ye.; YAffiVLFV_,_V.A.
Selecting methods for determining the service lifet:,,ar- of bito,
Izv. vys. ucheb. zav.; neft' i gaz 8 no.3:29-32 165.
(HIRA 18:5)
1. Llvcvskiy politekhnicheskiy institut i institut IIUKRNIIGIPROIJEFTll.

PASTOV, Georgiy Hikolayevich; YAKOVLNV V.A.p otvatetvannyy redaktor:
DOBRYNINA, A.Ya.. A.B., tekhnichaskiy radaktor
(Mechanization of labor-consuming work in the laying of cables
without uaing trenches] Makhanizataiia tiazholykh robot pri bes-
transhatnom vypolnenii kabelfnykh perekhodov. Xoskva, Goo. izd-vo
lit-ry po voprosam oviazi i radio,,1956. 6o p. (MLPA 9:9)
(11lectric cables)

TAKCVLLV, V.A., Inzhener.
'Over-all mechanization of underground cable laying. Nekh trud.
rab. 10 no.1:33-35 Ja '56. (MLRA 9:5)
(Cables)

PIOMOTSKIY, -M.A.,, kzndidat teldinicheskikh nank- YAKOVIHV V.A. inzhener,
DM-l machine for boring horizontal holes. Mekh.trad.rab.10
no-11:32 -33 R 15 6, .(Wu 10:1)
(Boring machinery,)
RRM~
It R - MN -
Rsw
M
km

YAKOVLEV, V.A.. inzhener.
Mechanizing work on cOmEanication and signaling lines. Avtom.
elem- i eviaz' no-7:34-37, JI 157- (YJ-aL 10:8)
(Building machinery)

-TAXOVIZV*.,-V9A*, inzh,
Determining the location of casing pipes in cutting blind passages.
Tranap.. stroi.. 9 no..4:58 Ap 159. (KIn 12 -.6)
(Pipe, Pteel)
T T
mw-vV~pE,~V-S MMWAX5
. ~ --,In 0",
R AT
wi
WW"MAIN. ---Fgoi -, -
--gg
v 0- VK04

MAZEL', Solomon Issakovich;:~YAKOVLHV, Viktor Alakoeyevich; KOKOSOV, Lev
Viadimirovich;
HKRX&N, -,Otv-e red. _,-R'nVLWSUA, X.M.,
red.; KAFXOCH, K.G., tekhn.red.
(Mechanization of line construction of.municipal telephone networks]
MakhDnizataiis stroitalletva lineinykh ooorathenii gorodskikh tele-
fonnykh setei. Moskva. Gos.izd-vo lit-ry po voprosem sviezi i
radio, 1960. 153 p. (MIRA 13:12)
(Telephone lines--Construction)

AC.C NRt 06=78o SOURCE CODEt W04131664000103.2
HMEhITORSt Vitkov, G. D.; KWntsev, V. V.; Selesnev, Pe go; 74Ttserp Vo K,j
K7'7
_LTatishcheyp P. A*
_4j,j YakovIsvp Ve Ae
Morozoy,
ORGt none
MIX: An induction furnace for heating blanks. Class 18p No. 182756
SOURCE: Izobretoniya, provqshl~nWe obrastay, tova~rnqyw xnaki', no..'12# 1966p 45
TOPIC TAGS:- furnace,'induction furnace, refractory alloy
ABSTRACTt This Author Certificate preaenti an Induction furnace for heating blanka
of complex shapes , made of refractory- alloys . in a nonoxidizing atmoapheres To save
the refractory alloys and t6 produce, Ooper heatingp the furnace in provided with a
hermetically closed caaing.~hich contains two Induction heatIng*slements. The two
heating-chambers formwd are interconiiectedlbr transmitting tunnels. 'A closed r*G__.
tangle conducts push rods for a self-dupol pan idti b2anks being himtede -
SUB COM 23/ a= DMS JjMjr63
Cwd

IA~]Il -.11. -,--
;?.A ~~ - ~ V." ---
1. ~'~ i .:~ - - ,-

YAKOVLNV.V.A., inzhener
New technology of producing welded crankshafts. Rech. transp.
14 no.4:29 Ap '55. (XLRA 8:6)
(Granks and crankshafts--Welding)

YAKOVLNV V.A., in2hanor-makhanik.
Remote control system designed b7 P.L.Lorpachev. Rech.tranffp.15
no.7:25-26 Jl 156. (MLRA 9:9)
1 (motorboats) (Remote control)

YAKOVLEV, V.A. , inzh.
Instrument for checking quality of lubricants on ships. Rech.
transp 17 no-11:52 X 158. ORM 11: 12)
iShips-Equipment 'and supplies)
(Lubrication and lubricants)
BMW

YAKOVLEV, V.A., inzh.
Vibration cushion for auxiliary equipment. Rech transp. 18
no.9:3 of cover S 159. iMIRA 13:2)
(Ships--Equipment and supplies)
0 i;
NRP
W
U,
M,

YAKOVIXV, V.A., inzh.
Every inland navitation worker and seaman will readthis brochure
with interest ("Remote cont-ol of main engines on the diesel-
propelled ship "Orelmllb7 B.V, Levitskii, F.V.Pilippenko, V.I.
Sheleshko. Reviewed bir V.A.IAkovlev. Rech.transp. 18 no.11:
55 N '59- (MIRA 13:4)
(Marine engineering) (Remote control)
(Levitskil, B.V.) (7111ppenko. Y.V.),(Shelashko, V.I.)
6~1 25-K N
AN
Mr
DR
WiN

YAKOVLEV, V..&., inzh.
Device for the automatic linking of river and lake vessels.
Sudostroenie 27 no.5:19-23 14Y 161. (MIRA 14:6)
(Towing)

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Iton a New Theory of the Crystal." Theals for degree of Ctind. Phys icomathemati Cal
Sci. Sub. 15 Jun 49, Moscow Order of Lenin State U imeni M. V. Lononosov,
M Summary 82, 18 Dee 52, Dissertations Presented For Depx-_ees in Science and Engineering
in Moscow in 1949, From Vechernyaya Moskva, Jan-Dee lcY+9.

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rap 1131 94 umvisell 441660, 0
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1-.-~--KMIKOVX,,-N.-M.--and--LAZAREVk,--L .-4.
"The Angular Distribution of Fission Fragments in the Photo Fission,of Uraniumn
a paper presented at the International Conference an Nuclear Reactions, Amsterdam,
2-7 JulY 1956.
D551274
'AV
3,10
.H,
HIM
AROM Ow
AMR,"
M 10
4L;-.,,- 1L

120-4-3/35
AUTHORS: Bugorkov, S.S.Xalkin, b.Z., Petrzhak, K.A., Yakovlev, v.A.
and Yakunin, M.I.
TITIE: Ionisation Chambers for Alpha Particle Counting
(lonizatsionrW kamery dlya scheta' allfa-chastits)
PERIODICAL: Pribory i Tekhnika Eksperimenta, 195?, No.4,
pp. 16 - 19 ~USSR)
ABSTRACT: The construction and properties of 5 ionisation chambers
for alpha particle counting are described.
iio.l: A universal camera for alpha pwticles emitted within
a solid angle of 2TT (Fig.1). This caniera is used for
measurements on alpha-active materials deposited on one or
both sides of a thin plate. It can also be used to estimate
the degree of alpha-actuivisation of the inner surfaces of
hemispherical platinum cups after various chemical procedures.
.No.2: A camera for measurements in a solid angle which is
less than, or equal to, 21f (Fig.4).
No-3: A camera for measuring alpha activities of liquids
(Fig-5).
No.4: A camera with a solid angle (0.01 - 0.001) x 2Tr (Fig.6).
No.5: An argon filled camera (Fig.?). This is used to
measure intensities of the order of 2 x 105 counts/min and also
Cardl/2

120-4-3/35
Ionisation Chambers for Alpha Particle Counting.
in the measurement of alDha activity on a high beta background.
Pressure of the argon is about 1 atm.
The mechanical design of the 5 chambers are shown in the
figures quoted above.
There are 7 figures and 3 references, 1 of which is -Slavic
ASSOCIATION: Khlopin Radiation Institute Ac.Sc. USSR:
(Radiyevyy institut im. V.G. Khlopina AN SSSR)
SUBMITTEM: September 26, 1956.
AVAILABLE: Library of Con-gress
Uard 2/2

AUTHOR
TITLE
PERIODIOAL
A13STRA OT
BAY1K B.P.,h-ULIKOV.4, N',K.,LAZARE,VA L.Ye.,YAI,',OVL--V - 56-7-8/66
j I , V.A
Angalar Distribution of Photofi3son Fiagme t3 from iraniua.
(Uglovoye raspredeleni)e oskolkov pri fotodelenii urana Russian)
1
Zhurnal Ek3perim. i Teoret.Fiziki,1957,Vol 33sNr 7,PP 3-55 (U-S . . .
1'i~h the help of Ilf9rd D-1 plates saturated with uranium the angular
distribution of the fission fragments are determined on the oc;casion
of the fis,p~oning of uranium by a rbombardment with an energy of
9,4, 12, and 26,5 'YeV. The 30 XoV synchrotron of the FIAN served as
a
An~ spurae, L
Sbtropy increases very considerably with decreas-Ang I -energy.xior
ihe 3 coefficients, a b,c, of the function of angular distribution
the following values were determineds
EP b/a ratio bet,0een the anisotropio
Q max and isotropic fission yields
9t4 0,55�76,09 0,55-10,09
12 0,2o+O;oT 0,13+0,05
260 O,o7-+O,o6 O,o5TO,o4
1) (a"k 2 c (2 tables, 1 i1 1., 3 Slavic references).
-r ; )
3 a 5!1
Phypiqal Institute"P.N.Lebedev"of t4e Academy of Scienoce of the USSR
'4
Msichqokiy *nstAut im. P.N. Lebedeva Akademij nauk SSSR)
7,2.1957
Library of qQngress.
ASSOC T.-W TON
SUM,1ITTED
AVAIL2V3LL'
Card 1/1

AUTHORS;
TITLE.
PERIODICAL:
ABSTRACT:
Card 1/4
SOV/.-,8-22-7-lo/20
Aron, P. M., Kalyamin, A. V., blurino A. H., Yakovlev, V. A.
On New Rare Earth Isotopts With *Neutron Deficit. Lutctium
Isotope With -the Mass Number 167 (0 novykh neytronodefitsit-
nykh izotopakh redkikh zemell. I~~otop lyutetsij,a s massovym
chialom 167)
Izvestiva Akad,--mii nauk SSSR, Seiiya fizichoskaya, 1958,
Vol. 22, N'r 7, PP- 617 - 817 (USSR)
Weh_-n tantalum ,,,as bombarded with 606o ma protons in the syn-
chrocyclotron of the OIYaI rare earth isotopes with a neutron
deficit were produced. Some of them have not been known hi-
therto (Refs 1 - 5). A radioactive nuclide with a half-life
of 55 + 3 minutes was discovered in the chromatographic se-
paratijn of the lutetium fraction. The half-life %as obtained
from the intensity curve of k- -lines at - loo keV, which was re-
cordtd by at -scintillation spectrometer. When jtterbium is
separated by chromatographic methods 7 hours after the active
rare earths had been separated from the lutetium fraction, the

On New Rare Earth Isotooes With Neutron Deficit. SOV/48-22-7-lo/26
LtAetium Isotope With the !Uss Number 167
samt line is found. The intensity of this line in tht ytter-
bium fraction dropped with a half-life of 18 minutcs. The
energies of the r-quanta and the half-lifes within experi-
-7
mental errors correppond to the tabled data for Yblo
(T 1/20 18 minutes, E~t - 118 keV) . Thz thalium fraction separat-
cd siraultan-:ously -,ith ytttrbiun; fro.ii the lutetium fraction
emitted th!~ characteristic e.-spectrum of Tu 167. Thf, intensity
of the bright P-line with an energy of Ep a 207 keV decreasts
with a half-lift of --,lo days. Hence, the existence of the
167
hitherto unknown isotope Lu is proved:
E E E
Lu 167 Yb 167 - Tu 167- %o Er 167
T 1/2 55 min T 1/2 18 min T 1/2' 9,6 days
(stable)
Card 2/4

On New Rare Earth Isotopes With Neutron Deficit. SOV/48-22-7-lo/26
Lutet~ium Isotope With the Mass Number 167
Apart from the e-line with an energy of -loo keV, also lines
with an enprgy of -17o keV and -24o keV were found in the
spectrum of the initially separated lutetium fraction. The
-17o keV-line was also observed in the spectrum of the 167
daughter ytterbium. Its half-life is near to that of Yb
The -/ 24o keV-line was not obeerved in the spectrum of the
167. V. P.
daughter ytterbium, as it originates from Lu
Dzhelepov, Director of the Laboratory for Nuclear Problems
OIYaI, the operational staff of the synchrocyclotron, and
B. K. Preobrazhenskiy assisted in the first experiments.
There are 5 references, 5 of which are Soviet.
ASSOCIATION: Radiyevyy institut im. V.G. Khlopina Akademii nauk SSSR.
(Radium-Institutqimeni V.G. KhlopinjAS USSR)
Card 3/4

2~(8)
AUTHORS:
TITLE:
PERIODICAL:
ABSTRACT:
Card 1/2
no MMMA
Kalyamin, A. V., Levenberg, 1. Yus, SOV/89-6-5-21/33
Yakovlev, V. A.
- ---------------------------
On New Positron Activities of Neutron-deficient Isotopes of
Lutetium, Ytterbium, and Holmium (0 novykh pozitronnykh aktiv-
-nostyakh neytronno-defitsitnykh izotopov ly-utetsiya, itterbiya
i &ollmiya)
Atomnaya energiya, 1959,-Vol 6, Nr 5, P 582 (USSR)
A tantalum target is irradiated for 10 minutes with 660 Nev
in a synchrocyclotron, and after chemical treatment the
individual fractions are measured. The following new nuclei
were found: 1) LU 167: T1/2 - 43 min; Ee 0 1.7�0.2 Mev;
2) Yb 161 : T 8 2� 155:
1/2 = 4 min; E,+ 2.90~+O.i5 Mev; 3) Ho
T1/2 ~ 50 min; E,+ = 2.10�0-15 Mev- Positron energies were
measured by means of a P-spectrometer constructed by
V. N. Mekhedov and M. Ya. Kuznetsova. By means of a I-acin-
tillation spectrometer the y-spectrum of a chromatographically
separated body was measured, which isidentical with the

On New Positroh Activities of Neutron-deficient SOV189-6-5-21133
Isotopes of Lutetium, Ytterbium, and Holmium
spectrum of Dy155. Therefore the mass arrangement of Ho155
is probably sufficiently certain. Professor A- N. Murin
was interested in the investigation, and results were
discussed with him. There,are 3 references, 2 of which are
Soviet.
ASSOCIATION: Laboratoriya yadernykh problem Ob"yedinennogo inBtituta
yadernykh issledovaniya, (Laboratory for Nuclear Problems of
the Joint Institute of Nuclear Research)
SUBMITTED: December 10, 1958
Card 2/2

BRIK, I.L.; BRESTKIN, A.P.; YAKOVLEV, V.A.
Interaction of eaters of the ff-methylcarbamic acid with acetyl-
cholinesterases of the brain of white mice and flesh flies.
Biokhimiia 29 no.6:1020-1028 N-D 164. (MIRA 18:12)
1. Institut evolyutsionnoy fiziologii i biokhimii imeni I.M.
Sechenova. AN SSSR, Leningrad, Submitted January 31, 1964.

BUGORKOVJP S..S.; MALKIN, L.Z.; PETRZHAK, K.A.; YAKOVIEV, V.A.; YAKUNIN, M.I.
ionization chambers for CC'-particle counting., Trudy Radiev.inst.
AN SSSR 9:214-228 1159. (MIRA 14:6)
(Ionization chambers) (Alpha rays)
L. Z.'; PETRZFA K,, K-A a nd YA KOVLEV V.' A.
Study-of the Effect of,alpha particle reflection on measuring in a
chamber with a solid angle 2 1:~id, p. 207
'Thin book represents *61xvii6 9'of'the Transaicti6fis of the'Radium'In-dt.
and c6fitains'the results 'Of'studies c' onducted at tha'Ifistitutb 6hiefly'from
1955't0 1956. There are -8 ri-dmber-of article6 dealing-,4ith'tb6 itudy'of nuclear
reactiorii 6c6 U-irifig "With ~artic-16i -of differbnt-energie-s'ringing from sov-4ral
eV' tip to hundreds of MeV. Others treat different problems of the physics of
neutrons.

21 21 (a)
AUTHOR Rud&kov, V. P. !SOT/a9-7-'-1eit5
Tnu.
IX A21-11alon Cznf.~.- Ift-l- Speztro.~-,py
Vdaanyuza.7. PC Td.=1y *;.k%-k-VUj
PSUODIMI Atoauts7a wastelya, 1957, V~l 3r 1, p? TC-73 (USUB)
AMRACTS Th. 11 A11-9clon Cmf.r--~ wo., b.la C~roa J~1:7 26
Peb'o sr.~, 2, 1959 at r%--kzv. V=- tOO heard
100 leaturea, the nost cf 4-.lt with t-b
fallovine fl.ld3i Nu.1var ---cary. Ger-ral Fr~b!-, C' zi-Ar.
A. S. Darydov (MU)t Tb,.*-tLoaZ ef
excited nual.ar L. X. Nker, -foxy,!
A. 11, (LPrZ),
oscillations of d.r.,-d jj_-Z~~ 7. Y! -za--
MM) at -7.
t-1* f%-,xZU.% 7:%
3- P- TOY,
fzaa.-rt- I one ty uv~ -:401.xk.
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in na ca" n of the &~7*r-
(IAZ)s Th. sprit
aodu tlywaGdal Co.- the of
their .-I. of L.trtl.. P. X. (=~; of
the nsrutrcn stability of Th.
CmA 1/3 present *;age in
AAC~l- =ZtVsl-i2~1 t. roa, ax~l
Asutri.0 in the d.rAY of the
(LY? U.~~-m% r
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polarization. of I-qu=t& 0-;rriac !. the d--AY of
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of %he I w.r levels of sess -Iii ftring t!:tlr by
wultiplyo hax-g.d 1-3 (C, 5. 0! ---1 1-).
JUZ1,1, T-5- P1kr2r1kijt,--V- 1~
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Ro , R.155.
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isotopes, set up ~n the basis :f If th- cz-tzzi-
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lih.h ki. (JAE-t lztpx~..4
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The represoatativos 2f the 111,U
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Cav . report bout a- -Iltp'i--. "be Cluf-.--- -44
vk~ tr .... A the f..T 'b.'
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quLck is ord %a be of real t. tk.
cut 3/3 ti

YAKOVLEV, V.A.; LEVCIIMKO,L.A.
Localization of dehydrogenases conrected vilth nitrogen fixa-
tion in Azotobacter vinelandii. Dokl. P11 SSSR 159 no.15tII73-1174
D 164 18:1)
1. Ihstitut khimicheskoy fiziYi (filial) MI SSSR. Predstavlene
akademikom V.A. Bagelfgardtom.

YAKOVIZV. V.A.; VOROBIYEV, L.V.; LEVCIIENKO, L.A.; LINDE, V.R.;
G.I.; SIRTSOVA, L.A.
Study of the biological fixation of molecular notrogen.
Biokhimiia 30 no.6:1167-1178 ti-D 65. (MIRA 19:1)
1. Filial Instituta khimicheskoy fizlki All SSSR, Mosk-va.
Submitted January 18, 1965.

_T ALT7 A005138- :0 -~SMCE--CCDS:--U'R/9126/66/021/001/0062/0067
UTHO]k: Sairimov,.B.- I.;.Yakovlev V. A'
ORG:_ PhyaLco-Technical InsUtutelm, A,, F. Ioffe, AN SSR (F1zik6-tekhnichaskiyq
inatitut)
TITLE: Change in the fine crystalline structure.and deformation resistance of
-tu
ungsten, during annealing
__T4 U5317.1
0
OURCE: Fizika metallov i metallovedeniy a,: v. 21 n ..1, 1966, 62-67
TOPIC TAGS. crystal structure crystal lattice dislocation, tungsten, annealing,
x ray analysis
ABSTRACT. :To clarify the:quest n of whether microdiatortionsare a cause or an ef-
feet of the hardening of metals, the~authors investigated the redistribution of
microdistoritions in individual regions~ of ~ crystal lattice during the annealing of
99.99% pur", on using the blurring of X-ray lines as a criterion. W was selected
because it.facilitates the comparison of the variation in wicrodistortions and in
strength characteristics with increasing temperature. Specimens of W were pre-annealed
in vacuum for 90 min at 1600*C and subjected to the following operations: deformation
-by reduction of 7.5% in.area at 20% radiography, annealing for 90 min at various
temperatures to,2.000'C,,radiography, and.second.defomation, with determination of
Card 1/2 UDC: 620.183.48

ACC --AP60051 8
3.
yteld 'points at adeformation of 0.2% during second loading. The fine crystailine
structure of deformed W and its variation during annealing'was determined according
to the~bl"rrincr of X-ray linee.- The direncions of micradistartions and blockc were
-,determined both according to line iddth and by-the method of harmonic analysis. It
turned out.thit the "effective" dimensions of blocks in the directiona 1100] and
(110] differ somewhat while the microdistortions are the same. On the other hand, it
Was-establiBhed,that the variation in the microdiatortions and yield poiuts of speci-
deformed at 20'C follows the some pattern in both cases. These findLags.ara in-.
terpreted cg follavs: The anisotropy, of "effective" block dimensions my be due to
the-pregence.of packing arrors,in.the layers [112). The sameness of microdistortious
in the directio4s.[1100] and [1101, is'. from the.standppint of the theory of alastical"
1y stressed blocks, attributable to the. isotropy of the elastic, properties of W. and
particularly to the 'proper ratio-betueen the densities ofedge and screw dislocations*
Further, both the iiicrodistortions and the deformation.resistance of specimens were
observed to decrease with increasing temperature. Depending on their nature, micro'
r duce the stressed state of the specimen..
may either,contribute.to or e
microdistortions which change in polarity over' distances of the order of the "path
length" of dislocations will Impede the migration of dislocations, I. e. contribute
to'bardening of the metal, while residual microdistortionst resulting from residual
stresses, which reverse polarity muc -should contribute to lo-
over I h larger distances,
i 'has: 4 figures*:
cal- plastic flowageo Or g-~ art*
012/ UM REF: 006
SUB CODE: Al, 13,,Z01 .-SUBM DATE: 06Jan65/ ORIG REP,
7- 7.

44608-66 EWTMA
WT (m) A EC (k -2ZMETI
ACC NRt AP6030983 SOURCE CODE: UR/0181/66/~08/009/28161281C--I--
Zakbarov, Yu. P.; Nikitin, V. V.V-
AUTHOR: Basov, N. G.1; Drozhbin, Yu. A. q7.
Semenov, A. S.; Stepanov, B. M.; Tolmachev, A. M.; Yakovlev, V. A.
ell,
ORG: Physics Institute im. P. N. Lebedev, AN SSSR, Moscow (Fizicheskiy institut
AN SSSR)
0 17
TITLE: -The effect of injection current on the temporal'characteristics of a GaAs
laser
SOURCE,, Fizika tverdogo tela, v. 8, no. 9, 1966, 2816-2818
TOPIC TAGS: solid state laser, semiconductor-laser, gallium arsenide,laser, injection
laser
ABSTRACT: In an investigation Of the temporal characteristics of a GaAs laser the
radiative delay time (T ) was determined as a function of.the injection current.
-Ordinary diodes, prepar9d by means 'of the diffusion process, were'placed in a dewar
at the liquid N temperature. The laser was excited by a current oscillator with pulse
amplitudes from 4 to 40 amp anda duration -of 40 nanosec. Several diodes were investi
gated at threshold currents.from 1.8 to 4 amp. The denc-rdence Of T on injection
current indicates that the value"of i9 approaches 1.8 x 10-9 see. this corresponds
approximately. to the spontaneous -radiative lifetimes for electrons and holes calculatEd
theoreti.cally elsewhere (W. F. Dumke, Phys. Rev.,.132, 1998, 1963). With a 16-fold
Card

MWER
'-ACC NR,
increase of Ithr, T 9 increases to 0.9 nanosec; this is explained by.the time increase
nece ssary to achieve population inversion. To eliminate delay due to spontaneous
emission and to achieve stimulated emission, the diode was pulsed by currents from an
auxilliary oscillator with amplitudes of 1.5 Ithr and durations of approximately
200 nanosec. Some 50 nanosec after the onset of the auxilliary p'ulse, the diode was
puls'ed by a positive.current from the master~oscillator. The delay time between the
onset of the injection current from the master oscillator and'the radiation inducedby
it was measured, and at 17 Ithr was reduced to 6 x 10711 sec.* A further decrease in
T calls for considerably increased injection currents, The experimental data indicate
tRat GaAs lasers can bb used a's radiation modulators in the centimeter band and as
high-speed (10-10-4011 sec) optical switches. Orig. art. has: .1 figure. [YKI
SUB CODE: 20/ SUBH DATE:' 13Apr66/ ORIG REF: 001/, M REF: 002/ ATD PRESS:
5076

_jAKYY;L.LA.; MIKHAYLOVSKAYA, A.M.; ARTAMONOV, M.A.; SLAVIN, Yu.T.; STRAKHOV,
K.I.; KCRIIYUSH.IH, A.K.
Induction furnnce for melting Imagnesium] n1loys; suggestion by V.A.lAkov-
lev and others.-Prom.anore.11 no.6-28-30 Je '56. (MLRA 9-.'g)
. (Electric furnaces) (Magnesium Alloys)

'TL v-
YAKOIII~V,
t -~a als
bles for 7L-*ItiDg_ lie zv.
no.0 Jo
(C-t. cibler,) kj',Iu:ninIIrJ alloys-D-le c tr o tie tv, 111urry
VMMS
9-

--p- 90-
A~ VU,
-M WIN I

YAK kand. tekhn. nauk; RAGAZINA, M.F., inzh.,
Ved. red.; TRUSOV, L.P., kand.tekhn. nauk, red.; SOROKINA,
T.M., tekhn. red.
[Induction heating with a commercial frequency current of
aluminum and magnesium alloy ingots)lnduktsionnyi nagrev to-
kom promyshlennol chastoty slitkov is aliuminievykh i magnie-
vykh splavov. Moskva, Filial Vaes.in-ta nauchn. i tekhn. in-
formatsii, 1958. 21 p. (Paredovoi nauchno-tekhnicheakii-i
proizvodstvennyi opyt. Tema 3. NO.M-58-44/3) (MIRA 16:3)
(Induction heating) (Nonferrous ingots)

129-1-10/14
AUTHORS: Yakovlev, V.A., Candidate of Technical Sciences and
'Ya-._T-.7S-p-6 kf-o-r-,'-Engine e r -
TITLE: Induction Heating of Titanium-base Alloys Prior to
Plastic Deformation (Induktsionnyy nagreV splavov na
osnove titans. pered plasticheskoy deformatsiyey)
PERIODICAL: Metallovedeniye i Obrabotka Metallov, 1958, No.1,
pp. 43 - 46 (USSR).
ABSTRACT: The advantage of induction heating of titanium alloy
blanks prior to plastic deformhtion is the considerable red-
uction in the total heating time, thereby reducing the rate
of burning off metal, the depth of the changed layer and the
danger of crack formation during plastic deformation. This is
of particular importance in the manufacture-,of thin, aircraft
components. The authors of this paper aimed at studying
certain relations which accompany induction heating of titanium-
base alloys and elaborating recommendations relating to the
technology of induction heating of such alloys prior to plastic
deformation. The kinetics of induction heating of the alloy
BT-2 was studied on specimens of 18 mm dia., 14 mm long. The
tested alloy contained: 0.6% C, 2-5576' Cr, 2.39016 Al, 0.11% Fe,
uardl/3 0.4180% 02 and 0.0391%o H2. The heating current was supplied by

129-1-10/14
Induction Heating of Titanium-base Alloys Prior to Plastic
Deformation.
a rotary generator of 8 000 c.p.s., 100 kW, which was fitted
with a hardening machine (the engineers A.P. Gracheva and
V.I. Damaskin participated in the experiments). The temperature
recording was by means of a loop oscillograph with thermocouple
sensing devices welded on to the specimen. The heating was
automatically switched off by a photo-electronic pyrometer
with a response time of 45 milliseconds. Curves of induction-
heating of specimens of BT-2 alloy for various heating speeds
are graphed in Fig.1, p.43. All ~he curves show a bend in
the temperature range 400 to 500 C. The graph, Fig.2, shows
the results of heating of 150 mm dia. specimens made of
titanium-base alloys by means of currents of industrial fre-
quency in a three-layer inductor; the total heating time is
20 minutes and the temperatureogradient between the surface and
the core does not exceed + 10 0 for a duration of 1 1/2 minutes
after s~gitching off the h-eating current; prel;minary heating
to 800 U, followed by rapid heating to 1 050 C reduced by
another 2 to 3 minutes the time during which the temperature
of theospecimens is within the dangerous range of 800 to
1 050 C. For heating titanium-base alloys, the authors con-
Card2/3 sider more efficient and economical the use of induction muffle

129-1-10/14
Induction Heating of Titanium-base Alloys Prior to Plastic
Deformation.
furnaces operating at industrial frequency in which a muffle of
a heat-resistant alloy is heated by induction current and the
blank inside the muffle is heated by induction currents and by
radiation; in such furnaces', the sealing of the atmosphere
and the use of protective atmospheres is usually solved. The
sketch of an experimental, 4-channel, 2-muffle, induction
furnace of industrial frequency is shown in Fig.4, p.45; the
furnace is well-sealed and an inlet is provided for a protective
atmosphere. The blanks inside the muffle are displaced along
guides and changeover from one standard dimension to another
requires substitution of the respective guide elements; such a
changeover can be effected in 3 - 4 hours.
There are 4 figures.
AVAILABLE: Library of Congress
Oard 3/3

-6-12/17
SOV-129-58
AUTHORS:Yakovlev, V. A. (Cand.Tech.Sci.), Spektor, Ya. I. (Engineer)
TITLE: Gas Corrosion of 'tanium Base Alloys in the Case of -Furnace
and Induction Heating (Gazovaya korroziya splavov na osnove
titana pri pechnom, i induktsionnom. nagreve)
PERIODICAL: Metallovedeniye i Obrabotka Metallov, 1958, Nr 65
PP 52-56 (USSR)
ABSTRACT: The influence was investigated of the thermal parameters
of heating on the kinetics of corrosion and the depth of the
change layer in the case of heating in the furnace and in-
duction heating. The kinetics of corrosion of the alloy
VT2 was determined by the method of continuous weighing on
an instrument designed by Prof. 1. Sidorin. The specimens
were firstground and washed in alcohol. The kinetics
of,:cbtrosion was investigated in the temperature range 200-
10000C with temperature steps of 1000C; the weighing at the
given temperature was effected over 20 minutes. Dryiand
humid air was used as the aggressive medium. Fig.1 gives
the specific increase in weight of the alloy VT2 as a funct-
ion of.time in various media. Other results are entered in
a table, p 54 and in graphs, Figs.2-9. It was established
that during furnace heating the corrosion in humid air is
Card 1/3 more intensive at high temperatures (800-10000C) than for

SOV-129-58-6-12/17
Gas Corrosion of Titanium Base Alloys in the Case of Furnace and
Induction Heating
dry air. At lower temperatures (about 800 00) the corrosion
s less intensive in humid air due to the fact that the
i
degree of dissociation of the water is still small and the
vapours which are adsorbed on the surface of the specimen
impede the access of oxygen molecules. In -the case of
furnace heating the corrosion speed in undried air increa-
ses sharply at ?OOOC. In the case of induction heating tip
to 10000c1 the specific weight increase is dbout ten times
lower than in the case of furnace heating and the duration
of the heating is about 200 times shorter. In the case of
induction heating to 12000C with a speed of 10 to 150 a/see
the depth of the changed layer is 5 to 6 times smaller than
in the case of furnace heating. It was established that in
the case of induction heating, the scale formation processes
(temperature of beginning of appearance of an opaque film,
temperature of flaking off of thefllmetc.) are shifted
Card 2/3

.83559M
SOV-129-58-6-12/17
Gas Corrosion of Titanium Base Alloys in the Case of Furnace and
Induction Heating
upwards by about 2000C due to shortening of the heating
times. A. P. Grachev and A. I. Pekarev participated in the
experiments. There are 9 figures, 1 table and 4 Soviet
references.
1. Titanium alloys - CoxTosion 2. Titanium alloys - Induction heating
3. Titanium alloys - Corrosion 4. Gases - Corrosive effects
Card 3/3

SOV/94-58-12-9/19
AUTHORS: StrakhoVY4, K.I., Andrianov, Yakovlev, V.A.,
Ivanchenko, I.N. and Yakovicht A*I,#I,,_,_
TITLE: A Continuously Operating Induction Heater for Heating
Hot Stamping Tools(Tnduktsionnyye nagrevateli
nepreryvnogo deystviya dlya nagreva shtampov)
PERICDICAL:Promyshlennaya Energetika, 1958, Nr 12, pp 20-21 (USSR)
ABSTRACT: Hot stamping tools are usually heated by tubular...heaters
but it takes a long time to heat the tools up in this
way. The authors have developed a method of using
induction heating for these tools. Insulated conductors
are inserted in the tools as shown in the sketch and a
50 kVA transformer is used for supply. Conductor
dimensions and current ratings are given. An electronic
temperature controller is used. With this method of
heating the tools are heated continuously and uniformly,
the heating time is cut by a factor of five and is now
1.5 to 2 hours, prod-action is of better quality and the
power consumption is much less. This suggestion was
Card 1/2

SOV/94-58-12-9/19
A Continuously Operating Induction Heater for Heating Hot Stamping
Tools
awarded a fourth premium in an All-Union Power
Economy competition. There is 1 figure.

The seciond prize (imeni 11. A. Minkevich) was awarded to Candidate of Technical
Sciences V, A. Yakovlev., Engineers-Ya...N..Spektor and K. As Makashev for the
paper "New-Heat,Treatment Technology for Tubular Components of a Complex Geo-
metrical Shape-Using,Induction, Heating for the Hardening Process".
Results of the 1958 Competition for Obtaining imeni Do K. Chernov and imeni.
N. A. Minkevich Prizes, Metallovedeniye i termicheskaya obrabotka metallov.,
1959, No* 6,, pp 62-64

yAKOV1&V, V.A.; KUZIMIN, S.G.; RYBAKOVs P.A.; KORNYUSHIN, A.K.
Induction furnace using industrial frequency and equpped with a
cylindrica cast-iron crubible for smelting aluminum allo7s. Prom.
energ. 14 no.1:39-40 Ja '59. (MIRA 12:1)
(Electric furnaces)

YAKOVLFjV, V.A., lnzh.
Installation of TS-1 heat registers. Inergetick 8 no.8:19-20 Ag
,6o., (Temporature-Measurement) O(M 13:10)
MIINMR-4
1~;UU WF NMI
ME
,A g S-g
RE!-

850-28
S/094/60/000/010/002/002
B073/E335
AUTHORS: Strakhov, K.I., Each'Anov, I.I. and Yakovlev, V.A.
0-
TITLE: High-temperature Induction Rvirnace' of Industrial
Frequency for Brazip& pf Components
PERIODICAL: Promyshlonpaya energetika, 1960, No. 10,
PP. 15 - 16
TEXT: The authors propose a new design of an induction type
furnace qperating at the supply frequency with a permanent
hermetically closed muffle and not an expendable one. The
furnace forms-.a coreless transformer, the primary winding of
which is arh6itituiii-solenold (inductor) and the secondary
winding is the'hermetic muffle made of a refractory metal.
On connecting the inductor to an AC supply, currents are
induced in the muffle and partly also in the components inside
it which generate the required brazing heat. The temperature
control Is effected by means of a potentiometer on the basis
of temperature values derived from thermocouples fitted
inside the furnace. The furnace consists of the following -
basic parts: housing - 1; industor - 2; thermal Insulation - 3;
hermetic muffle lid and the magnetic circuit - 6~
Card 1/3 -

s/o94/640010/00-2/0 102
E073/E335
High-temperature Induction Furnace of Industrial Frequency for
Brazing of Components k~
The housing is made of ordinary "steel 511 and its dimensions
are 1 000 x 1 000 mm. To prevent heating of the housing
separation gaps are provided. The inductor is a two-layer one
and has 78 turns of a 16 x 16 mm hollow aluminiunt conductor.
The outer layer has 5 tappings, enabling selection of the
necessary thermal regime of the furnace, The dimensions of
the inductor are: external diameter 823 mm; internal
diameter 785 mm and height 750 mm., The thermal insulation is
M:,,,de of "ultra-lightweight" material (between the internal
layer and the external surface of the muffle) and f,3-rebrick.
The muffle is Imade of refractory (~I-435)143heet steel,
11 mm thick;' the joints are fused by argon are welding. The
cover of the furnace is of nonmagnetic steel, 14 mm thick with
a pipe connection for fitting a vacuum pump, introducing a
gas flux and thermocouple& On the inside the lid is fitted with
thermal insulation. On the outside it is water-cooled. The
furnace characteristics are as followsf power 65 Wt.
-voltage 380 Vj current consumption 180 A.- current intensity
Card 2/3

8509-8
S/094/60/000/010/002/002
E073/E335
High-temnerature Induction Furnace of Industrial Frequency for
Brazing of Components
in the furnace 700 A; rating of the condenser bank 350 kVAri
temperature 1 200 .- 1 250 C. This furnace has the following
advantages: the power consumption is only one.-quarter of
that of a chamber furnace; the process is much less labor ious;
a great saving is obtained in expensive refractory metal for
manufacturing the muffles. The annual saving in electricity
amounts to 600 000 kWh. This proposal was awarded second
prize in the Fifteenth All-Union Competition for Saving
Energy. There is 1 figure,
Card 3/3

YAKOVLEV V.A.; DOBRRI, Z.Ye.; ICOLDASHOV, 5.S.
Bui-lcIing tunnel kilns at the Borovichi Refrac-'cries 'Oombine.
Ognzeupory 26 no.6:252-255 161. v-dRA 14:7)
1. Borovichakiy kombinat ogneuporov (for Yakovlev, Dobrin).
2. Stroitellnyy uchastok. -- 81 tresta.No.4.3 Upravleniya
n
stroiteltstva Le ingradskogo rovnarkhoza (for Koldashov).
(Borovichi - -YJ Ins)

'OvM9
YAY
mar
Ferr
e of -FerrIom agnetic VAtals-P11
"Additional Res'stanc , CbernovtBY
C".- samoylovichl, Yakovlev
State U
et Fizol vol XX: 11, No 3) pp 350-
Itzhur Eksper i Teor
355
Considers the influence of spontaneous magnet
gnetic crystal upon its elee
ization Of a ferroma the
resistance. Establishes thermal dependence of,
sistance in a low temp range. Re ceived
addnl r'e
23 Oct 51-
21W-9Q

AEn,SKjyvSh.Sh.; YAKOVIWIV.I.
AdditiOnal resi8tance of ferrom&gnets
no.2:143-145 155. lu R magnetic field. AN URSR
1- ChernivetalklY derzhavniv univerattet. (MIRA 8:11)
Akademij nauk URsR V.B.Iashkarlov. Predat'liv diYanly chlen
(Forromagnetism)

SOV/58-59-5-10870
Translation-from: Referativnyy Zhurnal Fizika, 1959, Nr 5, p 138 (USSR)
AUTHOR. Yakovlev, V.A.
TITLE: Effect.of Electric Field on the State of Electrons In a Solid Body
PERIODICAL: Nauk, zap. Chernivets'k un-t, 1955, Vol 12, pp 147 - 157 (Ukr.; Russ.
r6sum6)
ABSTRACT, The author applies Van'ye (Russ. spell.) functions to the case of a
crystal with narrow bands (insulator, semiconductor). He obtains
eigenfunctions and the energy spectrum of electrons in the presence of
a homogeneous electric field, He calculates,the probability of an
electron transition from one band to the next. This probability has a
form that differs from that known up to the present and points to the
existence of an anisotropic dependence of the pre-breakdown current
upon the magnitude of the field for the case of a three-dimensional
crystal. It is shown that, thanks to this mechanism, the time of passage
of significant pre-breakdown current is of an order corresponding to the
experimental data.
Card 1/1 The author's r6sum6

SOV/58-59-5-10953
Translation from% Referativnyy Zhurnal Fizika, 1959, Nr 5, p 149 (USSR)
AUTHORS-, Samoylovich. A.G,, Yak vlev,,-.YA.---
-TITLE. The Kinetics of.,Semiconduotp;! PhotocondtLcjjyj:ty
PERIODICAL- Nauk..,zap. Chernivetalk. un-t, 1955, Vol 12, pp 167 - 175 (Ukr.; Russ,
r6sum6)
ABSTRACT: The authors studied the character of photocurrent In relation to time
as the light which illuminates the semiconductor is switched on and off.
The introduction into the kinetic equation of a "statistical term" which
takes the thermal interaction of the levels into account makes it
possible, in the main, to explain the breaking up of semiconductors that
Gurevich and Tolstoy propounded (Gurevich, Tolstoy, Dokl. AS USSR, 1950,
Vol 72, p 473); namely, the hyperbolic or exponential character of the
variation of the photocurrent is directly caused by the character of
steady semiconductor photoconductivity. (Chernivetsk. un-t. USSR).
The authors' r6sum6
Card 1/1

21-5-6/26
AUTHORS: Tarnavskaya, M.V. (Tarnavalka,, MV,) and Yakovlev., VA.
(Takov3,vev., V.A.) I-------
TITLEt Excitation Spectrum of a System of Many Particles in a Magnetic
Field (Spektr vozbuzhdeniy sistemy mnogikh chastits v magnit-
nom pole) -
PERIODICAL: Dopovidi Akademii Nauk Ukrains1koi RSRp 1957P Nr 5, Pp. 448-
452 (USSR) -
ABSTRACTt The author give~`the results of an investigation of excit-
ation spectrum in systems of.charged particles of one sign
being in a constant homogeneous magnetic field. These results
can be applied to an electron plasma. The formula for a "dis-
persion equation" (formula 6) takes into account all the
quantum effects for the case of particles interacting accord-
ing to any central law. The most complete results are ob-
tained for the particles with the Coulomb interaction law
(for "plasma"). The method of density matrix is employedf
and the presence of half-integer spin of the particles and
correlation.due to identity of the particles are taken into
consideration. The dispersion equation obtained connects the
oscillation frequency with the wave vector. The equation is
solved, by means of expansion into aeries by Bessel functions,
Card 1/2 for two cases of low temperatures (formula 10) and high temper-

21-5-6/26
Excitation Spectrum of a System of Many Particles in a Magnetic Field
aturea, when the degeneration of the electron gas is left
without consideration (formula 12). it can be shown by this
method that magnetic field strength does not affect the ex-
citation spectrum of Bose-particle systems at T - 0. The
article contains 6 Slavic references.
ASSOCIATION: Chernovtsy University
"of,the- AN Urrainian SM
PRESENTED: By V.' e. Lashkarev (La9*A0~4jhejg*r
Y
SUBMITTED: 20 October 1956
AVAILABLE: Library of Congress
Card 2/2

69428
??o o S/139/6o/ooO/01/002/041
AUTHOR: Yakovlev, V~*A. EiWE382
TITLE:- 'influence of the Electric Field on the Mobility of
Current Carriers-in Semiconductors
PERIODICAL: Izvestiya vysshikh uchebnykh zavedeniy, Fizika,
1960, pp 12 - 15 (USSR)
ABSTRACT: The general theory o f the influence of the electric field
on the mobility in pure atomic semiconduct*ors was given
in -the works of Davydov, Landau and Kompaneyets (Refs 1,2).
In practice, however, the semiconductors are used with
impurities which can change completely the behaviour of
the current carriers. In particular, in a strong electric
field, the deviations from the Ohm's law will be determined
by the impurities, as can be seen from some experiments
carried out on n-type germanium (Ref 3). The theory of
this effect (Refs 4, 5) showed that in order to determine
the relaxation time it is not possible to employ the
perturbation theory for low temperatures. In view of the
particular part played by the quantum effects, the
relaxation time can have several values. These are given
(1)
forthe collision forces. For the resonance
Cardl/4 by Eqs

69428
S/139/60/000/01/002/041
Influence of the Electric Field on RVANU.ity of Curre.
0 3. nt
Carriers in Semiconductors
scattering conditions, the times are expressed by Eqs (3),
while for the scattering corresponding to the Ramsauer
effect they are given by Eqs (4), where a is the radius
of the impurity potential and N. is the impurity con-
3.
centration. These results can be used to determine the
distribution function. The function is assumed to be in
the form:
p
f0 + - fl
p
The first component of the function is expressed by
Eq (6), where the parameters ~ and w are defined
oil p 13. Themobility can be expressed by;
e1 1 d Q v 2 (7)
-2 -
3m (v dv

69428
S/139/6o/ooo/oVoo2/01
EL?J~f~82f Current
influence of the Electric, Field on the Me 0 Carriers
3.n Semiconductors
where the averaging is effected by employing the function
f0 At high temperatures the mobility can be expressed
by either of Eqs (8), where 'AL is the background
mobility. At low temperatures, provided the conditions of
Bqs (1) and (2) are fulfilled, the mobility is expressed
by Rq (9), -where q -P'/-(T'41--t`j*B')' B = Bor B
0 9 0 n
and W is -the Whittaker function. At small E the
IL'V
mobility is given by Eq (10), whilst at strong fields
it is expressed by Eq (11). On the other hand, the
resonance scattering results in a formula for the mobility
which is in the form of Eq (12). Consequently, at weak
fields, the mobility is given by Eq (13) and at strong
fields it is in the form of Eq (14). In the case
corresponding to Eqs (4), the mobility is expressed by
Eq (15). Consequently, at high concentrations the mobility
is given by Eq (16) and at strong fields it is expressed
by Eq (17). The results obtained above for comparatively
Card3/4 weak fields (Eqs 8, 10, 13 and 16) are analogous to those

69428
S/139/6o/ooO/01/002/041
Influence of.the Electric Field on the 0 1 1 y Current Carriers
in Semiconductors
obtained by M. Sodha (Ref 6). There are 7 references,
5 of which are English and 2 Soviet.
ASSOCIATION: Stalingradskiy pedinstitut (Stal-Ing- PgdaLro,%j5ZLjl
Irlstitute)
SUBMITTED: February 6, 1959, initially;
June: 11, 1959, after revision.
Card 4/4

S/181/60/002/007/036/042
B06/Bo6o
AUTHOR: Yakovley.L V. A.
'k
TITLE: Absoation of Infrared Radiation by Electrons in n-Type
Silicon
PERIODICAL: Fizika tverdogo tela, 1960, Vol. 2, No- 7P PP- 1624-1628
TEXT: As is known a theory of infrared absorption in semiconductors
may be developed without making use of equations of motion. This is of I/11C
special importancefbr semiconductors with a complex system of electron
energy (Sip Ge). As regards germanium there are many more publications
available than on silicon. The present paper makes a contribution to this
problem. The conduction band structure of n-type silicon in which the ab-
sorption by electron scattering can be explained by atomic vibrations. and
lattice defects, has alrea(trbeen discussed in the paper of Ref. 3 and is
therefore assumed to be known. The author gives a theory of infrared ab-
sorption due to electron scattering by atomic vibrations. The absorption
of a photon by'a band electron becomes possible owing to the simultaneous
absorption or emission of a photon. The probability of this two-stage
process is calculated here by perturbation method in the second -appro3dihatian.
Card 1/2

Absorption of Infrared Radiation by Electrons In S/181/60/002/007/036/042
n-Type Silicon B06/Bo6o
For the ": electrons of the conduction band of n-type Si (whose distribution
in the -space is known) the author first gives an equation for the iso-
energetic surface E(k) and one for the matrix element that describes the
photon absorption. The Hamiltonian of the interaction with long-wave acous-
tio oscillations is derived, and an expression (4) is finally given for the
probability of photon absorption in which acoustic phonons participate.
Next, expressions are derived for the absorption coefficients (first, for
the acoustic branch of the atomic vibration spectrum). In the folloving,tbe
author studies the effect of the optical branch also, The method of the de-
formation potential, which can be used in the first case, cannot be employ-
ed in the second case, so that it is necessary to analyze the matrix ele-
ments. A general expression is derived for the absorption coefficient,
after which some limitingcases are examined, for which the expressions for
the absorption coefficient can be considerably simplified. There are
6 references: I Soviet and 5 US.
ASSOCIATION: Stalingradskiy pedagogicheskiy institut
(Stalingrad Pedagogical Institute)
SUBMITTED: October 28, 1959
Card 2/2

84618
S/181/60/002/010/047/051
B019/BO56
AUTHOR; Yakovlov. V. A.
TITLE: The Absorption of Infrared Radiatioln n-Type SilicoO
PERIODICAL: Fizika tverdogo tela, 1960, Vol. 2,, No. 10, pp. 2639 -2640
TEXT: In a paper by V. S. Vavilov (Ref.1) a report was given on the
,anomalous behavior of n-type silicon in the absorption of radiations in
the range of 2-7 R- In this range the absorption coefficient was greater
than it ought to have been acdording to the usual theory. Vavilov sug-
gested the impurities as the cause for this. The present author gives a
possible explanation of this anomaly, ascribing the main part played to
the absorption of the free carriers, and without taking absorption by
impurities into account. Using a result obtained by Yamashita et al.
(Ref-5), who put Xrj0/kT = 59 where e,)0is the frequency of the optical
vibrations, the author, on the basis of published results, obtained for
the absorption coefficient
Card 1/2

84618
The Absorption of Infrared Radiation in S/181/60/002/010/047/051
n-Type Silicon B019/BO56
3/2 5/2), 1.
o.62(;~ + 7.7 2 m-' (2)9 X is given in p. By put-
2 1
ting,7.7 2L - 7, the absorption curve obtained by Vavilov is well ap-
1 11 C2
proximated with (2). D and C are coupling constants of electrons with
acoustical and optical vibrationag respectively. Thus, the anomalous
behavior of absorption may be explained by the effect of the optical
branch of the lattice vibrations. There are 7 references: 3 Soviet and
4 US-
ASSOCIATION: Stalingradskiy pedagogicheskiy inetitut (Stalingrad
Pedagogic Institute)
SUBMITTED: March 199 1960
Card 2/2

6317d
S/056/60/039/002/015/044
Boo6/BO56
AUTHORS., Yakovlev, V. A., Kalyush, A. V.
TITLE: The Excitation Spectrum of a System of Electrons and Ions
Located in a Homogeneous Magnetic Field
PERIODICAL- Zhurnal eksperimentallnoy i teoreticheskoy fiziki, 1960,
Vol. 39, No. 2(8), pp. 308-310
TEXT: The existing mathematical methods of taking collective Coulomb
interactions in a multi-particle system into account are being more and
more used also in solid-state physics. In the case of a metal, this
system is approximated by an isotropic plasma, and in first approximation,
the periodicity of ion distribution (in the lattice points) may be ignor-
ed when calculating the physical properties of such a plasma, which are,
of course temperature-dependent, the ion motion ust be taken into ac-
+
.count. V. P. Silin has already investigated th eakly/excited states of
electrons and,ions by means of a quantum equation of motion in a self-
consistent field,, From an analysis of the dispersion equation it followed
Card 113.

The Excitation Spectrum of a System of Electrons
and Ions Located in a Homogeneous Magnetic
Field
83178
S/056/60/039/002/015/044
B006/BO56
that in the long-wave range, excitations were essentially of a collective
Icharacter. By employing a method similar to that used by Silin, the
authors of the present paper investigate the influence of a constant homo-
geneous magnetic field -.upon the speatrum of the longitudinal excitations
of the syetem.investigatitd'o Here, only the long-wave part of the spectrum
.is investigated, which plays~the most important-part in many physical
phenomena. The authors proceed from a relation for the electron (and
ion) distribution function of weakly excited states. The dispersion rela-
tions are given, and the authors go over to the Fourier components accord-
ing to a method developed by L. D.-Landau. In the absence of a magnetic
field, the dispersion relations (1) furnish (in the case of small kt i,e.,
long waves) two vibration branchest, an acoustic and'an electronic one. The
thermal motion in a motal excites only acoustic oscillations; for the ex-
c.itation of electronic oscillations about 104 OK would be necessary. The
acoustic'branch of excitations is further investigated for T> 0 (0 - Dobye
temperature). Fermi distribution is assumed to hold for the degenerate
electron gas, and Maxwell distribution for the ions, The effect of the
magnetic field upon this branch is formulated, and several relations
Card 2/3
~_*Nm_m_m M. ~Wp

83178
The Excitation SPectrum of a S.75tem of Electrons S105616010391002loi5lOA4
and Ions Located in a Homogeneous Magnetic B0061B056
Field
are gi* en. If there is no fieldt one obtains the same results as Silin,
There.are 7 reference.: 6 Soviet and I US.
ASSOCIATION: 'S~alingrad6kiy pedagogichoskiy institut
j 'p f
Stalin rad Peda o icalche~iqkiy in,
'uago i Institute
'St rnovi X'j~ a
0 ca~
Ins t I tu~
te
qhe tski, ~~r t'
Chernovjtskiy~egosuda s vonnyy universitet
Chernovts State U -stv" nny,
err'ov" 'Z
a Un ~rve r s~
niversity
it
y
SUBMITTED: 'December 22, 1959
Card 313
.. T7
v'zi
~*,R M 611-
INAP V

YAKOVLEV V A.
concentration of vacancies in solJAs. Izv.vys.ucheb.zav.li- fiz.
no.1:14-3.-146 161. (KMA 14:7)
I- St,~Iing.radskiy pedagogicheskiy in~titut.
(CrystaII3-+fGCtB)

25685 s/181/61/003/007/007/023
7 7 0 0 O's V/ /0 3r) B102/B202
AUTHORs Yakovlevf V. A.
TITLEs Theory of electron conductivity of narrow semiconductor
bands in a strong electric field
Fizika tverdogo tela, v. 3, no- 7t 19619 1983 - 1966
TEM The author presents a theoretical study of the conductivity caused
by the effect of a strong electric field on the state of the electrons
in narrow, not filled semi 'conductor bands. In the calculation of the
el&otrical resistance in solids it is usually assumed that the wave
functions and the electron energy spectrum are not influenced by an
external magnetic field. (This field causes only'a redistribution of
the electrons to the levels.) This model applies to mgtals, buto not to
semiconductors where the field strengths may attain 10 V/cm. Such a field
cannot always be regarded as a disturbance of the periodic field within
the aryatall its effect (also in zeroth approximation) on the steady
states of the electrons has to be taken into account. 1. M. Lifshits and
M. I. Kaganov (UFN, LXIX, 419, 1959)-discuseed the problem of the existence
Card 1/ 5

685
S71,81/61/003/007/007/023
Theory of electron ... B102/B202
of steady states of a crystal electron in a homogeneous electric field,
The existence of states corresponding to a finite motion is well
substantiated for any law of dispersion and fieldanot causing band-to-band
transitions* In metalat the electron level quantization in an electric
field does, however, not cause the observed effsot.M. The author
studies the possibility of observing the contribution of this effect in
semiconductors with narrow bands to their electrical conductivity. He
uses the :nnierlrepresentation of the single-elsotron wave function
(1 lin(I )w(~ - 11)(1) vdzm w,(1'- TO are the Vannier functions i:bf
the n-th band looali.zed at the point 1 X, 1 ' 1Z. Neglecting the
y 5 6
band-to-band transitions (which is justified at 10 10 V/om)
(E (i) + e(O) - E)V (1) - 0 is the equation daterminingT , Here, 9 is
n n n
the field strength of the homogeneous electric field ' 'In(p) an operator.
In the following the author confine8-himself to a cubic crystal with
.eyrow impurity band). Here,
narrow conduction band (or
2 Z'-Jc (3) holds; ' a'
En En 20th sin 2 ai re the translation vectors.
Card 2/5

68
S~1815/61/003-/007/007/023
Theory of Olectron
/3202
Thus, the following-eglution is obtained for t
r
n n
j
(M ) where J. are-Bessel functions,
)j
x x x :a S z-
y y z
Oc Oc liaf P S integer numbers. Hence, the (normalized) wave funcfibh
x n ~x
takes:on form
(ay) (ct.) w (r ri),
(a.) JY
eats The
and 'he energy spectrum is,given by E E 3Y-n +Z I
transition between the states 13--ils' is Sivern by the matrix element
-