SCIENTIFIC ABSTRACT DZHELEPOV, B.S. - DZHELEPOV, B.S.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000411910003-2
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: March 13, 2001
• Sequence Number: 3
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

:. i C, r. 0 f th e 1!'!~
hlatton tit i.J
rM
-1t
C-r
U
~i u.,3 L,-.nc Iit
C, I fV.;
!in p-
r E- IUA 1 fl t- ng - L u-
U:i .-CI I it I :1~
U.' t
c
chowski
I.,; L 'i
.1

In. :--, -6~,t~on of the Angular ')j.jtiibuti!)n SOV/48-22-8- 111/20
r ainra in the Annihilation of Positrons in LiIuid Hydrogen and Heilum
obsorve!.. The small,!r number of such L~ases c,beerved in
aiuminium appeaio to te of a somewhat peculiar signifieanc,~.
The curve of the angu..ar distribUti.)r! for holium is wi
,han that ior PYdroger., which fact is c,-,nn,:cted wth the
1,11igher velocity of the electrons in h-lium, -.he ~!xperimen-
tai curves of angular distribution ofj--quanta liffer from
tho.,,--, computed bj '.hzban Li (Ref 5'), k*'~lgs file
.qi),,:;trum of the center-of-mass energ.,., of the annihilating
P"Liro can be constructed from the curve of the angular !is-
tribution of thea-quanta., As a result of the computations
energ,y spectra of the positron annihilation in liquij hylro-
gen and helium were obtained (Figure 'I). As regaris the
spectrum for aluminium, which is also given in figure 7, no
judgmunt car he passed on it, as the curve w- .:)nstructed
from nix point~'~ only. The authors exprecs their ~,-ratitu~e 1c.
S. U 3
the Director of ti-j Institute of Pnysical robl-..---:s,, ..
imeni ~i,i. Vavilov, P.L. kapitza ani Shal'n--*,,-;
There are 7 fitures, I table, and 11 references, of
are Soviet,

,%vest.-gatlon of the Angular Distribution SOV/4F3-22-8-I-,.',!-
~t r-1-ianLa in the Annihilation of --usitrons in Liqui, Fydrogen and ::eiiu,:~
'laiichno-issiedo-;,,ttel,7,,,!,,,- in-.tit-;t L;ningre i:,L,.ogo
gos universiteui im. A ! Zhdanov;. ;'Scientific Research
Institutz- of Physics a* the Leningr-,d State 7jniver.;ity imeni
A.A. Zhdanov)
, r ,, ~'./ 4

,AUTHORS: Antonlyeva, M. N., Bashilov, A. A., 20-119-2-12/60
ele ov B. S., Corresponding Member of the
V
~

S
A
US It
US R.
i;i;�razhenskiy, B. K.
TITLEt Conversion Spectra of Some Neutron-Deficient Terbium
Isotopes (Konversionnyye spekti!y nekotorykh
neytronodefitaitnykh izotopov Tb)
PERIODICAL: Doklady kkademii Nauk SSSR, 19581 Vol 119, Nr 2,
PY 241-243 (USSR)
ABSTRACT: The present paper investigate* the conversion spectra
of the neutron-defioient Tb-isotopes resulting in the
reaction Ta + P (660 MeV). The preparations and the
conditions of experiments are similar to those in 2
previous works (references 11 2). The denay curve3
determined from the change of the conversion pe '.s
with progressing time showed that the Tb-prepa--ation
contains several isotopes. The present paper gives
the results obtained for each of the observed activities:
1) T1/2 ~ 8 + 1 houre.
Card 1/4

Conversion Spectra of Some Neutron-Deficient Terbium 20-119-2-12/60
Isotopes
Only the conversion electrons of the two transitions
E-y-123 and 977 keV were observed. One of the isomers
of Tb154 shows T1/2 =7.3 hours. Furthermore the level
123 keV is known for Gd154. Therefore the given activity
wan attributed to Tb154. The other transitions known from
the decay ot' Eu154 were, however, not observed in
Gd154. 2) T4/2 - 16 * I hours. Within the energy interval
of from 109 t01050 i~eV 16 nuclear transitions as well
as a composed 0+-spectrum with Elimit - 2#8 MeV were
observe&. The values of FiT of the here discusse&
transitions differ from the corresponding values known
from the decay of Eu154. The 15-hour activity observed
here can be attributed to Tb154 or to Tb151 partly or
Gard 2/4 completely.

Oonversion Spectra of Uome Neutron-Deficient Terbium 20-119-2-12/60
Isotopes
3) T1/2 w 2.3 i 0,3 days. Within the interval of about
100 to 250 keV 8 nuclear transitions were observed. Until
now no isotopes have been known which decay with such
a half life. The newly discovered activity obviously
belongs to Tb153. The authors observed in fact Gd153 in
the secondary products of its preparation.
4) T1/2 - 5 4 1 days. The transitions attributed to the
half life of 5 days obviously belong to the isotopes Tb155
and Tb156. The authors attribute 14 transitions to Th155,
with respect to their energy they partly correspond to the
19 known transitions The t;anaition with Ej w 89 and 199
keV were attributed i0 Tb150. 5) T1/2 - 10; 120 or 200
days respectively. The activities with these half lives
also belong to the secondary products of Gd149, Gd151
Card 3/4 and Gd153. The authors express their thanks to the Team

Conversion Spectra of Some Neutron-Defioient Terbium 20-119-2-12/6o
Isotopes
of the Synchrocyclotron of the United Institute for
Nuclear Research (Obl'yedinannyy institut yadernykh
issledovaniy) for the irradiation of the tantalum
samples; they also thank L. Sayenko and E. Pania for
their collaboration in the measurements. There are 2
figures, 2 tables, and 8 references, 2 of which are
Soviet.
ASSOCIATION: Leningradskiy gosudarstvennyy universitet im. A. A.
Zhdanova (Leningrad State University imeni A. A.
Zhdanov)
SUBMITTED: December 25, 1957
Card 4/4

210) S071120 - 121 -6
AUTI 7TORS Corresponding Mem*3er, Academy of Scier,--e,
f--USSR, Prikhodtaeva, V. P., Khollncv, Yu. V.
+ +- 140 140)
TITLE: The 0 -* 0 Transition in Ce (0+ -0 O+-Derekhod v Ce
PERIODTCAL: Doklady AVademii nauk SSSR, 1958, Vol 121, Nr 6, PP 995-9)7
(USSR)
ABSTRACT: By some authors the following problem was raised: Do the
conversion electrons K-1909 (- 1909 keV) correspond to the
transition between the excited state (1909 keV, ~uantiim
characteristies 0 ) and the ground state (also 0 ) ? In
order to solve this probleT, the authors carefully investi
gated the y-spectrum of La'40 in the energy region of
-1900 keV. Lanthanum oxide irradiated by thermal neutrons
was used as a source. The original activity of the preparatiin
was 2,8 Cu. The results of the measurements are given in a
diagram. No y-line is observed in the energy region 1800-2000
keV. The intensity of the T-raya -1900 keV (if they exist
at all) is less than 4-10-4 quanta per dizintegration. These
Card 1/3 data (together with the data of two'previous paper-- (Refs 1, 2)

The 0 + 0+-Transition in Cel4o SOV/20-121-6-11/45
concerning the intensity of the convers Ion 1 Ve 1909 keV)
enable us to conclude that there is a 0 + 0 -transition.
In order to oonfirm the existence of the line K-1909, and
for a more accurate determination of its intensity, the
authors investigated the hqi;d part of the sPectrum of the
conversion electrons of La'40 by Mealls of 2 sl,ectrometern
of the ketron type. These spectrometers were placed at the
authors' disposal by A. A. Baahilov, Leninaradskiy univer-
sitet(Leningrad University) and K. Ya. Grornov, "diyevyy
inatitut All SSSR (Radium Institute AS USSR). La 0 vir-o used
as a source in both of th-~-ae -ases, Accordini., to the rasults
given in a diagram, the existence of the lines K- and L.1~?09
is beyond any doubt. The transition has the averaf,,e enera
1902 keV, and the ratio of the intensities K
1902/K1596
equal to 0 1220,(i.e. the averaC~e value of all the ;-.-ea3u3e.,en-.
series). For t Ile lower limit of the convereion coefficient
cf the transition 1902 keV the value "K-1902~' 0,38 was
found.
This leads to the conglusion that the traj',.13.LtiOTj -7j;jj tile
e4era +1902 keV in Ce,40 is the hilher'o unknown trnnoit_;,~n
0 ~, 0 . Besides, the authors sought z.-_7 found "I'le K- and
Card 2/3 L-conversion lines which corr-2spond LO tile 2-~43 and

The 0+-+ 0+-Transition in Ce 14o SOV/2o-121-6-11,/45
2390 keV and to the y-line 2515 keV. A table ~-ives the ex-
perimental and the theorptical conversion coefficients on the
K-shell for the transitions discussed in this paper. The
authors thank A.. A. Bashilov and K. Ya. Gromov (who made
it possible to carry out the control experiments by means
of their spectrometeTs)p 11. D. Ifovosilltseva for the chemi-
cal separation of La 40 from a barium solution, and also ji. G.
Dmitriyev and Yu. A. Gurlyan for their help in carrying out
measurements. There are 3 fiCures, I table,and 6 references,
5 of which are Soviet.
ASSOCIATION: Radiyevyy institut im. V. G. Khlop~na Akademii nauk BSSR
(Radium Institute imeni V. G. Khlopin,AS USSR)
SUBMITTED: June 30P 1958
Card 3/3

24(7) PHASE I BOOK EXPLOITATION SOV/3228
Dzhelepov, B. S.
TZ obarnyye yadra s massovym chislom A=74 (Isobaric Nuclei With Mass
Number A=74) hoscow, Izd-vo AN SSSR, 1959. 39 p. (Series:
Svoystva atomnykh yader, vyp. 1) Errata slip inserted. 4,000
copies printed.
Sponsoring Agency: Akademiya nauk 3SSR. Radiyevyy institut.
Ed., Yu. V. Khollnov, CandIdate of Physical and Mathematical
Sciences; Ed. of Publishing House. Ye. A. Semenova; Tech. Ed.:
A. V. Smirnova.
PURPOSEg This book Is intended for s,~ientlsts engaged In nuclear
physics, and particularly for scient1sts working In the field of
nuclear spectroscopy.
COVERAGE: This is the,first of a series of monographs on.proper-
ties of atomic nuclei, It Includes all atomic nuclei"having a
mass number of 74 and all the data on these isotopes. The
author critically analyzes the experimental data and summarizes
Card 1/5

Isobaric Nuclei (Cont.)
ISOV/3228
the reliable data on the energies of radioactive radiations,
mude2 of decay, half-lives, and quantum characteristics of ex-
citation levels for all nuclei with a mass number of 74, He
also points out the characteristics of nuclei which have been
determined with sufficient rellability, as well as the charac-
terl3tics which require further study. rhe other monographs of
this series will present summaries of all physical characteristics
of certain nuclear groups, as well as systematized determined
properties of all known nuclei. No personalities are mentioned.
References follow each chapter.
TABLE OF CONTENTS-.
1. Introductlon
Ga'(4
2. Data an decay
Bibliography on Ga74
5
6
8
Card 2/5

Isobaric Nuclei (Cont.)
SOV/3228
Ge74
3. Properties of the ground state of Ge711 9
711
4. First excitation state of Ge'', E 596.3 KEV 9
5. Second excitation state of Ge74 E* 1190 KEV
6. Higher excitation lnels of Ge74 2 11
13
7. Cross section of Ge activation by neutrons 13
Bibliography on Ge7J1 14
As74
8. General data 15
9. Half-life 15
10. pt and P--spectra 74
K
A 15
11. - and L-capture in
s 18
12. Y -rays of As74 18
13. Conversion electrons of A874 21
14. P'Y , P* y , and 74X Y coincidences 21
15.
6 Decay mode of As
74 22
1
. Branching in the decay made of A3 22
Card 3/5

Isobaric Nuclei (Cont,,) SOV/3228
17. Quantum characteristics of Ge74 and Se 74 levels obtained
in the decay of AB714 24
18. Quantum characteristics of the of As74
ground state 25
19. About the K/ 4 for A874
t dpcay o
_ n the Ge74 level with an
excitation e
ergy of 5S1 6.*
1 K9V 26
20. -decay and electron capture reducing Ge the
leve; of 1190 KEV tl-
~
- 74 28
21. CompOtition between the -
-
and
~ -decay In As
f 28
22. !~nss of As74 74 29
23. Production and chemical s,lparat ion of As 30
Bibliography on As74 31
Se74
24. Properties of the gryyn d state
33
25. Excited states of Se 33
Bibliography on Se74 34
Card 4/5

Isobaric Nuclei (Cont.)
Br 74
26. -Basic properties and decay mode
Bibliography on Br 74
SOV/3228
35
36
27. Other isotopes having a mass number A-74 37
28. Comments on possible experiments 36
AVAILABLE: Library of Congress
Card 5/5 TM/os
2/25/60

BONGH-OSHOLOVSLAYt., Natallya Aleksandrovua; DZHSWOV,,B.S.,,red.j-
SZKENOVA, Ye.A., red.izd-va; BOCIERVIR. V.T., tekhn.red-.
[Atomic photoeffect in the field of gamma rays] Atomnyi
fotoeffekt v oblasti -luchei. Pod red. B.S.Dzhelepova.
Hoskva, Izd-vo Aknd.nauk SSSR, 1959. 48 P. (MLU 12:8)
1. Chlen-korrespondent AN SSSR (for Dzhelepov).
(Photoolectrioity) (Nuclear reactions)

DZUrUfFM', 13. 5-
tit jai
VS.
gig
13
tit
Vill V
I'll Jill]
laQ

In ZJ.PT-b

A I
Ail-I-'U
j A 84L

A
---T
41)

P nr

r- -c -:0 t1dj4t-

,'QZ';T -U
'(t'd)oz'g 'O'd)oV6
.
J) Tf
MF,T~ri-
-I
--
-
.
j
awmn-VT r--ITxmr
a 09 oz I= 0.9
3o A, J. tol"al."Tod

;o Awt.p m .1 atr;jj~
...... ......

w;

&4% ac v

3, -T;1 -C 'T

00,
&56t z

Zd 4Z; I~A '.C;Cl 'V1211- Iftl-%, .=Iaolmu
A =Tvrl-,-v n 43MUZ
08=
tz
4~a

DZEEIEFOV B. B... KHOIANOV,, YU. V.) PPIKff0MVA~ V. P.
"A 0+ --> 0+ Transition in Ce 140.. , Fuolear Pbjysics, vol. 9, 4, 1959, pp.665-669
(No. Holland Publ. Co., Amsterdam)
Radium Inst, im V. 0. Ehlopin, Aced. Sol. UWO lenlWad.
A sezroh has been made for gamca-guenta of energy jcz~vlqOo keV in the spectrum
of la"' by means of a somma-spectrometer by an"is of recoil electrons. It is
shown that is such exist, their intensity is ---' 0-4x 10- 3 quantum per disintegration.
It 1e similtaneously confirmed that the spectrum of conversion electrons contains
intense conversion lines corresponding to a transition energy of 1902 keV.
The lower 11mit of the conversion coefficient of this transition proved equal
to 0.38. Puch a large value of this limit indicates that It is either a trw2mltlon of
high m1ti:Pole order ( I >- 10), or a 04- --> 0+ transition in which gamme quanta of the
given energy are entirely absent. The first asswTtion ray be discarded since In this
case the I Lfetlw of the 1900 keV state should be vary pent ( ->. 10 " years), whereas
the intensIty of the ooss sponding conversion line falls off with a halflifa of~~ 40
hours. We a" thus dealing hen with a ner 0"' ----> 0-+"transition. 1*4
The paper also discusses the characteristics of several other transitions in Ce

21W SOV/48-23-2-3/20
iUTHORS: Voinova, If. A., Dzhelepov, B. S.9 Zhukovskiy, N. N.
TITLE: Investigation of the y-Spectrum of Se75 Nhin the Tbange
200 4 900 kev (Issledovaniye y-spektxa So v oblasti 200 4 900keV)
PERIODICAL: Izvestiya Akademii nauk SSSR. Seriya fizicheskaya, 1959,
Vol 23, Nr 2$ PP 185-187 (USSR)
ABSTRACT: The investigations were carried out by means of the magnetic
spectrometers "Rytron" and "Elotron" by use of recoil electrons.
Two experimental curves are given in figure 1, which correspond
to the y-spectrum of Se75 and were obtained 1) by means of
"Rytron" with cellophane target with a surface density of
6*15 mg1am 2 and 2) by monno of "Elotron" with polystyrene
target wiih a surface density of 2-34 mg/om . By analysis
of the curves 5 components with the energies 207, 259, 278t
305 and 402 kev were separated from 2). The weaker range of
the spectrum was investigated by means of "Rytron", and the
475 and 570 kev lines were found in addition (Fig 2). For
a oomi~~rieon, the energies and intensities of the y-lines
of Be obtained from data of other authors are listed in a
Card 1/2 table (Refs 1, 2j 39 4P 5). Besides the authors of this

75 SOV148-23-2-3120
Investigation of the y-Spectrum of Be Within the Range 200 4 900 kev
paper,only Zolotavin (Ref 3) found the.475 kev line. The
line 570 kev was found also by Van den Bold (Ref 2), Zolotavin
(Rof 3) and Langevin-4oliot (Ref 4). There are 2 figures,
1 table, and 5 references, 1 of which.is~- Soviet.
ASSOCIATION: Radiyevyy institut im. V. G. Khlopina Akademii nauk SSSR
(Radium Institute imeni V. G. Xhlopin of the Academy of
Sciences, USSR)
Card 2/2

210) SOV/413-23-2-4/20
AUTHORS: Grigorlyev, Ye. P., Pzhelepov, B. S., Zolotavin, A. V.
ad Yb 166 -> Tu 166 --*-Er 166
f Yb 166 - Tu 166 --)-Er 166 (Rae
D
TITLE: eoay o
p
PERIODICAL: Izvestiya Akademii nauk BSSR. Seriya fizichaskaya, 195',,
Vol 23, Nr 2, 1p 188-190 (USSR)
ABSTRACT: An error occurred in the spectral analysis of this reaction
since the energies of the most intense transitions in
166
166
166
166
produced by Tu
and in Er
produced by decay of Yb
Tu
were near 80 kev in both cases. For the purpose of explaining
and determining the levels the authors studied the conversion
spectra by means of the P-spectrometer with double focusing
and a half width of lines of 0.3co. The resolving power per-
mitted the separation of L I + LII, LIII and M and N lines.
Table 1 shows the corresponding lines of transitions 81.0 kev
166
166
166
. 1'raneition 79-4 in Er
and 79s4 kev in Sr
in Tu
agrees well with the theoretical transition type
99. M1
,
represents the transition type at 81.0 kev in Tu . A distinct-
ly marked difference results from a cqyariso.11 the relative
09

Card 1/2 (P 0
6
intensities of conversion lines of u and Erl in

Decay of Yb 166 Tu 166 -~, Er 166 SOV/48-23-2-4/20
equilibrium state with values obtained by othq; authors (Ref 3)
(Table 2). The conversion coefficient for Erlbb with ax - 1.8
for E2 transition and Tu 166 for tra'nsition M1 amounts to
3�1 and 4, respectively The tio of i ensities of the
individual transitiona in Tu ltg and ErW - 0-75 � 0-3. The
authors thank the T4 -rallars of the OIYaI and RIAN for
radioactive sourcest 0. V. Larionov, M. K. Nikitin,,, researchers
of the LGU for separation of the Yt- and Tu fraction, as will
as L. K. Poker for discussions. There are 3 figures, 4 tablea
and 5 Soviet references.
ASSOCIATION: Ilauchno-isfiledovatellskiy fizic11e,,,!kiy inatitut Leningradskogo
os. universiteta im. A. A. Zhdanciva
Soientific Research Institute of Physics of Leningrad State
f
University imeni A. A. Zhdanov)
Card 2/2

21(7) SOV/48-23-2-6/20
AUTHORS: Antonlyeva, N. A., Bashilov, A. A., Dzhelepov.
Iltin, V. V. , Preobrazhen8kiy, B. K.
TITLE: Conversion Electrons of Eu149 (Konversionnyye elektrony Eu149)
PERIODICAL: Izveatiya Akademii nauk SSSR, Seriya fizicheakaya, 1959,
Vol 23, Nr 2, pp 204-205 (USSR)
ABSTRACT: In investigating the electron apeotra of Eu and Gd fractions
the authors determined some lines with equal energy among
the conversion lines of both fractions. The energy difference
of the K - L and K - M lines indicates that the corresponding
nuclear transitions take place in the. samarium nucleus. The
respective energies amount to 256, 279 and 330 kev. From the
half-life periods determined by the lines K-279 and K-330
the authors concluded that they had found a long-lived Eu iso-
tope which decays to the samarium nucleus. According to a
comparison with data published on Eu isotopes also
EU149 is considered to be responsible for the above-mentioned
phenomenon. The authors concluded that the tranattions with
the energies 256-330 kev belong to the types E2 or Illy yet
Card 1/2 no definite conclusion can be drawn from the results obtained*

I Conversion Electrons of Eu149 SOV/48-23-2-6/2o
There are 2 figures, 2 tables and 3 Soviet references.
AS30CIATION: Nauchno-iseledovateliskiy fizicheskiy institut Leningradskogo
gos. universiteta im. A. A. Zhdanova
(Scientific Research Institute of Physics of Leningrad State
University imeni A. A. Zhdanov)
Card 2/2

21(7) SOV/48-23-2-7/20
AUTHORS: Dzhelepov, B. S., Prikhodtseva, V. P., Mhollnov,.Yu. V.
TITLE: y-Spectrum of J131 (y-Spektr J131)
PERXODICAL: Izvoetiya'Akademii nauk SSSR. Seriya fizicheekaya, 1959,
Vol 23t 11r-2, p 206 (USSR)
ABSTRACT: The authors investigated the y-spectrum of J131 within the
range of 200-800 kev, determined the intensities of well known
I-lines and tile y-line with 514 kev, of which mention is made
in paper (Ref 2). The results of these investigations are con-
tained in a figure. Por the intensities of y-lines the follow-
ing values were obtained:
E kev: 278 362 514 633.5 722
I % 5-7 100 < 0.4 8.9 1.9
In addition, a special investigation has shown that the intensi-
ty of the y-line with 514 kev never exceeds 0.4% of the intensi-
ty of the y-line with 362 kev. The authors thank V. A. Yeliseyev
for help in the measurements# There are 11 figures and 2
Card 1/2 references, 1 of which is Soviet.

y-Spectrum of J131
SOV/48-23-2-7/2o
ASSOCIATION: Radiyevyy institut im. V. G. Xhlopina Akademii nauk SSSR
(Radium Institute imeni V. G. Khlopin of the Academy of
Scienceeg USSR)
Card 2/2

21M BOV/48-23-2-8/2o
AUTHORS: Dzhelepov, Be S., Yeliseyevq V. .4., Prikhodtseva, V. P.,
Khollnov, Yu. V.
TITLE: y-Radiation of Br 82 (I-Izlucheniye Br 82
PERIODICAL: Izvestiya Akademii nauk SSSR. Seriya fizicheskaya, 1959#
Vol 23, Nr 2, pp 207-210 (USSR)
ABSTRACT: The y-spectrum was stu&d by means of the "Rytron" spectrometer.
It is given in figure 1. 10 lines were detected. The energies
and relative intensities obtained in this and another paper
are listed in a table for comparison. The beat accordance re-
sulted from reference 6, both for energies and intensities.
Within the range 1700-2000kev aweakline at 1780 kev and only
one elevation of a point above the backGround at 1910 kev
were found, Within the range 2000-2700 kev no lines with an
intensity above 0.2~ were found. The conversion coefficient
of the main transitions in BrUz was determined by means of the
inteneit:les obtained. The initial value 8f a
for the transi-
.
tion type E2 of tranaition 777 kev in Kr 2 was adopted from
tables published by Sliv and Band Ref 13) with an amount
~
2 b. Kr82 is given in
of 8.22.10-4. A decay scheme of Br
Card 1/2 figure 2. The transition types of the individual transitions

y-Radiation of Br 82
SOV/48-23-2-8/2o
of Kr 82 were determined according to a comparison of the
theoretical 01K values with the experimental once (Table 2).
The lines 1648 and 1780 kev detected for the first time as
levels are not given in the decay scheme. There are 2 figures,
2 tableat and 13 references, 3 of which are Soviet.
ASSOCIATION: Radiyevyy institut im.
(Radium Institute imeni
Sciences, USSR)
V. 0. Khlopina Akademii nauk SSSR
V. G. Xhlopin of the Academy of
Card 2/2

21M SOV/48-23-2-9/2o
AUTHORS: Dzhelepov, B.-S., Sergiyenko. V. A.
146 151
TITLE: Coincidences Between Conversion Electrons in the Gd and Gd
Decay (Sovpadeniya mezhdu konversionnymi elektronami pri
raspade Gd146 i Gd151 )
PERIODICAL: Izvestiya Akademii nauk SSSR. SeriA fiziehaskaya, 1959,
Vol 23, Nr 2, pp 211-21Q (USSR)
ABS'PRACT: The authors investigated the Gd146 --a- EU146 and Gd151 -- Eu151
decay, that is to saythpy measured the intensity of coincidence
between conversion electrons of the moat iittense lines. The
results are listed in table I and illustrated in figures
Figs 2, 3). The coincidence of transitions 114.8 and 115.5 kev
coincidonce AA) was found. It is unambiguous and is regarded
~
as a llsolf-coin~didencell'of the electrons of line K(114-8+115-5)-
If both lines were separated, there would le only half thi
intensity. The authors proved the coino dence of the lines
(K-114.qtK-115-5) and(LM-155+LM149.M14~) on the basis of the
coincidence of transition 155 kev with the transitions 114-8
and 115-5 (coincidence AC). Furthermore; the authors determined
Card 1/2 the coincidence of the lines L1*14-6+1 5-5)+K-115 and the

SOY4g%23-2-y~2o
Coincidences Between Conversion Electrons in the Gd nd Gd 1 Decay
Auger electrons (K series) (coincidence BA). The components of
the A9 B and C lines are given (Fig 1). The determination of
intensities of the individual componeltg is only outlined.
The scheme of decay from Gd146 to EU 4 is given. All transi-
tions bel?3f to the tTpe M1. The sequences are 1-, 2-, 3-, 4--
In the Gd 0 BU15 decay coincidence (L-21-7)(K-175) may
be regarded as proved. The authors thank A. A. Bash:Llov and B.K.
Freobrazhenskiy for the source, A. A. Bashilov also for
communication of his results. A. Andriyanovag Kh. Nasyrova,
-Students of Alma Atinskiy gos. universitet (Alma Ata State
University) assisted in the coincidence measurements of
Gd146 , and A. V. Kudryavtseva in that of Gd'151. There are
6 figures, 2 tables and 9 Soviet references.
ASSOCIATION: Nauchno-iosledovateltakly fizicheskiy institut Leningradskogo
gos. universiteta im. A. A. Zhdanova
(Scientific Research Institute of Physics of Leningrad State
University imeni A. A. Zhdanov)
Card 2/2

21M .91 SOV/48-23-2-lc/2o
AUTHO,RS: Dzholepov, /. S., Preobrazhonskiy, B. K., Sergiyenko, V. A.
TITLE: Coincidences of Conversion Electrons in the Decay of G'd147
and Gd149 (Sovpadeniya'mezhdu konversionnymi elektronami pri
raspade Gd147 i Gd149)
PERIODICAL: Izvestiya Akademii nauk SSSR. Seriya fizicheskaya, 1959,
Vol 23, Nr 2, pp 219-222 (USSR)
ABSTRACT: The spectra of conversion electrons of a Gd fraction were
recorded by means of a two-lens spectrometer up to electron
energies of 350 kev (Fig 1). The results of investigation of
the coincidence of conversion electrons produced in the decay
of Gd147 and Gd149 are contained in a table and shown in fig-
ures 2 and 3. The scheme of Gd147 N Eu147 decay was determined
from the coincidences of the lines K(396+370) and LM(396+370)
with the K line (229 kev) and the scheme of
Gd 149- ~. EU149 decay in Gd149 from the coincidences
(K-149-8)(K-346) and (K-149-8)(LM-346) (Fig 1). The authors
Card 1/2 thank N. M. Antonlyeva and A. A. Bashilov for interest in the

SOV148-23-2-10120
Coincidences of Conversion Electrons in the Decay of
Gd147 and Gd149
paper. A. Andriyanova and Kh. Hanyroval Students. of the Alma~
Ata University, and V. Bunakov and I. Xyznikov, Students of
the LGU, assisted in the zeasurements. There are 3 figures,
1 table, and 5 references, 4 of which are Soviet.
ASSOCIATION: Nauahno-ioaledovatellskiy fizicheskiy institut Leningradekogo
gos. universiteta im. A. A. Zhdanova
(Scientific Research Institute of Physics of Leningrad State
University imeni A. A. Zhdanov)
Cexd 2/2

7 (4), 7 (5), 21 (9)
A1UTHORSz Dzhelepov, B. S., Ivanovt. P. B9, SOV/48-23-7-1/31
N6d-OvGs-6V,-V-.--ff., Chumin, V. 0.
TITLE: Magnetic w-Speotrometer (Magnitnyy cc-apektrometr)
PERIODICALi Izvestiya Akademii-nank SSSR. Seriya fizicheakaya, 1959,
Vol 23, Nr 7, Pp T82-787 (USSR)
ABSTRACT: In the introduction of this paper, it is pointed out that most
o&-spectrometers work with inhomogeneous magnetic fields, and
that their resolvi
power is different (half-width of the
lines 0-05 to 0-08 and their light intensity is low
l)
(aperture ratio 0.01 to 0-06 ~ of 410- The purpose of the
present paper is to develop an 4-spectrometer with a xwjdving
power of 0.10 4, at an aperture ratio of 093 % of 4 T - In,the
first part of the paperp the experimeniai arrangement
(electromagnet with its screening and curvent supply,
evacuation plant, accomodation of tht radioactive sources, as
well as the geometrical control of the of-ray) is described in
detail, and supplemented by figure 1 (pole shoes) and figure 2
(chamber). The second part deals with the measurement of the
axial-symmetric magnetic field. The focusing angle in indicated
Card 1/3 with TV-2, and three papare are mentioned showing that

Magnetic oc-Spootrometer
SOY/48-23-7-1/31
spectrometers of this type have the most favorable relation
between resolution and light intensity. For the axial component,
an equation is given in which the coefficient 5 determines %h#
focusing properties of the field. The influence of the
magnitude of 0 on the width is discussed, and the measurement
of the topography of the magnetic field by means of a rotatable
coil is dealt with. These measurement results are shown in a
diagram (Fig 3)- Another diagram shors the topography of the
magnetic field in dependence on the position of the screening
rings on the pole shoes (Fig 4). The 04-partiolea are recorded
by thick nuclear photoemulsions. The last part deals with the
determination oil the characteristic of the rpoetrometer. It was
carried out with a Po 210_ source, and the half-width of the
lines aifiounted to 0.1 %, A variation of the solid angle did not
show any influence, and the variation of the half-width of the
line caused by a change in width and height of the source
followed theoretical formulas of a previous paper (Ref 10). A
diagram shows the dependence of the resolving power on the
aperture ratio of the spectrograph (Fig 5)- B- P- Shishin took
Card 2/3 part in the adjustment and calibration of the instrument. The

Magnetic c(,-Spectrometer
SOV/48-23-7-1/31
authors thank the collaborator K. I. Yakovlev f6r thels ctdm
lnstn~ :br %e measurement of -the magnetic field by the method of proton
resonance, D. M. Ziv and V. V. Fedorov for the preparatior of
the polonium sources, and also A. P. Zhdanov for his help in
the preparation of the photoemulsions. There are 5 figLxre4,,Akd
10 references, 2 of which are Soviet.
ASSOCIATION: Radiyevyy institut
(Radium Institute
Sciences, 'USSR)
im. V. G. Khlopina Akademii nauk SSSR
imeni Ve G. Khlopin of the Acelemy of
Card 3/3

7(4),7(5),24(7)
AUTHORS: DzhelLepov, B.,S., Ivanov, R. B., SOV/48-23-7-2/31
Nedovesov-t-M.-t., Shishin, B. P.
'233)
TITLE: The a-Spectrum of U233 . (a-spektr U
PERIODICAL: Izvestiya Akademii nauk SSSR. Seriya fizicheskaya, 1959,
,Vol 23, Nr 7, PP 788-791 (USSR)
ABSTRACT: The introduction mentions a paper by F. Asaro who detected
three a-groups of U 233 by means of a magnetic a-spectrometer
of the sector type. In the following L. L. Golldin et al.
showed in an exact investigation of the a-spectrum of
U233 that it is composed of five lines. These lines, ,are indie~
cated, and it is ascertained that the last three of these
lines cannot be calculated by the known formulas for the in-
tensity of the a-transitions. In 1958, the authors carried
out investigations of the a-spectrum- of U 233 by means of the
a-spectrometer described in the first paper of this issue;
these investigations permitted a moi-e accurate' determination
of the intensity of these three weak lines. Electrochemically
Card 1/2 plated U233 on platinum was used as a source. The measured

The a-Spectrum bf'U 233
SOV/48-23-7-2/31
values are compiled in two diagrams (Pigs I and 2); tables 1
and 2 compare the values with those obtained by other authors.
Thd results show that if there is an d -line this is Yery
4
weak. The a 5-line is formed by a tiansition to the 316 kev
leyelf and its intensity shoys that this is a transition of a
single-particle exAited level. The quantum numbers of these
transitions are dealt with in detail, and finally a scheme of
the decay of U 233 and of the levels Th 229 is given (Fig 3)-
The authors thank Tu. T. Puzynovich and V. K. Delayev for
their help in the measurements, and L. K4 Fqker for the dis-
ouseion of the results of their work. There,are 3 figurest
2'tables, and 9 references, 6 of which are Soviet.
ASSOCIATION: Radiyevyy institut im.
(Radium Institute imeni
Sciences, USSR)
V. 0. Khlopina Akademii nauk SSSR
V. G. Khlopin of the Academy of
Card 2/2

24(5),21(7)
AUTHORS: Brabets, V., Gromov, K. Ya.9 SOV/48-23-7-4/31
Dzhelepor, B. S.9 Dmitriyev, A. G., Morozov, V. A.
TITLE:
166
Conversior Electrons of Yb
rony Yb 166 1 TU 166)
166
and Tu (Konversionnyye elekti-
PERIODICAL!
ABSTRACT:
Card 1/3
Izvestiya Akademii nauk SSSR. Seriya fizicheskaya, 1959,
Vol 23, Nr 7, pp 812-818 (USSR)
The spectrum of the conversion electrons of the decay
166 K 166 166
Yb -mm~- Tu Er (stable) was investigated by an
Wos~ 7tW
improved magnetic P-spectrometer. The obtaining of the isoto-
166 166
pea Yb and Tu carried out in Leningrad is denribed in
short. The first part of this paper deals with the conversion
166 166 166
electrons of Tu . As Tu has the daughter isotope Th
three types of preparatiops were investigated: 1) The thulium
fraction obtained by,neansi of chromatographic separation from
the rare earths. 2) The ytterbium fraction obtained-by means
of chromatographic separation from rate earth elements- 3)
A thulium preparation separated from the ytterbium fraction

conversion Electrons of Yb 166 and Tu 166 SOV/48-23-7-4/31
20 hours after the chromatographic separation. The results of
the measurements are compiled in table 11 and it becomes
clear that the spectrum of the conversion electrons of
166
Tu in most cases agrees with the ytterbium, fraction. It is
pointed out that the value of these results depends on the
evaluation of the limiting intensity of the P-rays. Figure 1
shows the spectrum of the.conversion electrons of the isotope
Tu166 in the range of 10-185 kev of the thulium preparation
separated from the ytterbium fraction. All intensities have
a half-life of eight hours. Table I compares the axperimen-
tally determined ratiQ0 of the intensities of the K- and L-
conversion lines with the theoretical ratios. The second part
investigates the conversion electrons of the isotope
Yb 166 , and it is ascertained that the ratios of the intensities
of the K- and L-conversion lines of.the y-transition of
80 kev strongly diffor. The papers by V. N. Pokrovskiy (Ref 8)
and Ye. P. Grigorlyev are mentioned here. Further it was
ascertained that a y-transition with the energy of 81.0 kev
Card 2/3 takes place in the decay Yb166 Tu 166, and one with

Conversion Electrons of Yb 166 and Tu 166 SOV/48-23-7-4/31
166 166
79.4 kev in the decay Tu Er Finally, the intensity
of the X-2L-Auger-electrons is investigated with the aid of
the diagrams (Figs I and 4), and it is ascertained that the
data obtained are in good agreement with the data known from
publications. There are 4 figures, 3 tatles, and 12 refer-
ences, 5 of which are Soviet.
ASSOCIATION: Radiyevyy institut im. V. G. Khlopina Akademii nauk SSS1
(Radium Institute imeni V. G. Khlopin of the Acadony of
Sciencest USSR)
Card 3/3

24(5),21(7)
AUTHORS: Gromov, K. Ya., Dzhelepov, B. S.,. SOV/48-23-7-6/31
Pokrovskiyj V. 11.
TITLE: On the Scheme of the Decay of Tu 166 (0 ekheme raspada Tu 166
PERIODICAL: Iivestiya Akademii nauk S33R. 5orlya fizicheekayal 1959,
Vol 23, Nr 7, pp 821-825 (USSR)
ABSTRACT: The first part ;f the present paper deals with the multipole
tranaltions in Mr 166 , and discusses at first the experimental
166
data of the emission accompanying the decay of Tu ., which
were obtained in the preceding papers of this-issue. The
identifleation of the energy of the a-transitions, and the
relative intensity of the X-oonversion electrons, are con-
sidered. The multipole transitions E1, E2f (M1+ 92), and M2
are then investigatedq and the results are compiled in table 1.
The second part investigates the absolute intensity of the
I- and conversion-lines, and calculates the number of captures
of orbital electrons* The third part deals with two rotational
166
band13 of Er , the 'authors referring to previous papere, At
firett the levels of the rotational band of the ground state,
Card 1/2 then the levels of the second rotational'bandq are investj&ted

F
On the Scheme ofthe Decay of Tu 166 BOV/48-23-7-6/31
and explained with the help of a figure. The theory doveloped
by A. S. Davydov on the rotational states of non-axial nuclei
is mentioned which permits the energy of the rotational levels
to be calculated. The intensity of the transitions in the
bands studied here is then investigated, and the results are
compiled in table V. The fourth part investigates some other
levela of the zxcitation of Er 166 , and It is ascertained that
for a clarification of these excited states of Er 166 and
their quantum characteristic, accurate-measurements of-the
enern- of the conversion electrons will have to be carried
out. There are 1 figure, 3 tablest and 7 references, 5 of
which are Soviet.
ASSOCIATION: Radiyevyy inatitut imeni V. 0. Khlopina Akademii nauk SSSR
(Radium Institute imeni V. G. Khlopin of the Academy of
Sciences, USSR). Ob"Yedinennyy institut yadernykh issledovaniy
(Joint Institute of Nuclear Research)
Card 2/2

24(5),24(7)
AUTHORS: Dzhelepovl._B. S., Prikhodtseva, V. P., SOV/48-23-7-7/31
_&Eolnov, Yu. V.
TITLE: The I-Emission of Cs134 (1-izlucheniye C.134)
PERIODICAL: Izvestiya Akademii nauk SSSR. Seriya fizicheskaya, 19599
Vol 231 Nr 7, pp 826-827 (USSR)
ABSTRACT: The object of the measurements carried out by a magnetic
spectrometer was the determination of the relative latensity
of the y-linee. The measurement results are shown in two dia-
grameq the half-width of the lines in the range of 1 Mev is
indicated with 3.3 %, and the intensities of the lines are
compared. The half-width of the linas could be reduced by a
better focusing to 1.6 %. The resu~is O'ft~is investigation,
the energy and-be relative intensity of the y-lines of Cs134
are finally compiled. The authors thank V. A. Yeliseyev and
A. Ushako-m :ftw the execution of the measurements, and
N. N. Zhukovskiy for making possible the measurements by the
elotron. There are I figure, 1 table, and 11 references, 4 of
which are Soviet.
Card 1/2

The y-Emission of Csl34
SOV/48-23-7-7/31
ASSOCIATION: Radiyevyy institut imeni V. G. Khlopina Akademii nauk SSSR
(Radium Institute imeni V. G. Khlopin of the Academy of
Sciences, USSR)
Card 2/2

24(5)j24M
AUTHORS: Voinova, N. A., Dzhelepov, B. S.9
Zhukovskiy, N. No
SOV/48-23-7-8/3i
TITLE: The I-Emission of IP 182 in the Energy Range of 300-1,500 key
(Y-izlucheniye Ta v oblacti energiY 300-1500 key)
PERIODICAL: Izvestiya Akademii nauk SSSR. Seriya fizicheskaya, 1959,
Vol 23, Nr 7, pp 828-830 (USSR)
ABSTRACT: The introduction of the ppesent paper mentions in short the
results of many investigations of the rotational band of the
ground state of W182 ; then it is stated that the experiments
described were carried out by an elotron with the purpose of
determining the relative intensity of the y-lines, at the same
time lookirg for new lines in the range of energy indicated.
The measured values are compiled in a diagram (Fig 1), and it
is shown thatthere are practically no lines in the range
hY - 300-850 kevt and that there are 7 lines of different
intensities in the range hy - 850-1#350 key. Finally, some
known lines of low intensity in this range are mentioned.
There are 2 figures, I table, and 5 references, 2 of which
Card 1/2 are Soviet.

The y-Emission of Ta 182 in the Energy Range of SOV/48-23-7-8/31
300-1000 kev
ASSOCIATION: Radiyevyy institut im. V. G. Xhlopina Akademii nauk SSSR
(Radium Instituteimeni V. G. Xhlopin of the Academy of
Sciences, USSR)
Card 2/2

24(5),24(7)
AUTHORS: Dzhelepov, B. S., Yemellyanov, B. A., 30-/48-23-7-10/31
-PodRoP11ysV-#-Tu-.N., Podymakhin, V. N., Uchevatkin, I. F.,
Sheatopalova, S. A.
TITLE: On the Hard Part of the y-Spectrum of Radium Found.in the
Equilibrium With the Products of the Decay (hv.1100+5600 kev)
(0 zheatkoy chasti y-spektra radiya, nakhodyashchegoeya v
ravnovesii s produktami raspada (hv-3100-t5600 keV))
PERIODICAL: Izvestiya Akademii nauk SSSR. Seriya fizicheskaya, 1959,
Vol 23, Nr 7, PP 832-834 (USSR)
ABSTRACT: At the beginning, the transition RaC ---*-RaC1, and further
the transition RaC" ---w RaD, are indicated as the fundamental
cause of the hard I-radiationt and figure I shows a branching
of the radioactive series of the radium family. The energy
levels of these transitions are investigated, and a number of
previous papers is indicated. In the present paper, a
y-hodoscope of the NIFI LGU was used for investigating the
hard y-rays. Two series of measurements were carried out. In
the first series, the range of from 3,070 kev to 5p6OO kev
was investigated. The results of these measurements are shown
Card 1/3 in diagram (Fig 2). In the second series, the range of from

on the Hard Part of the y-Spectrum of Radium Found in SOV/48-23-7-10/31
the Equilibrium With the Products of the Decav (h7-3000+5,600 key)
3,200 key to 5,600 kev was investigated, and the results were
compiled in a diagram (Fig 3). The line with b*. 3,070 key
was practically not measured in the first series, and was
absolutely not measured in the second series. The diagrams
show the existence of I-lines with the energy of .
3,100-39200 key. The second diagram also shows an increase
in the electron output in the range of 3#500-3,600 key, and
this is attributed to the transition RaC" ----p-RaD according
to figure 1. The transitions RaC ----v-RaC' and RaCw co RaD
are indicated forthe I-lines with the energy of about
3,200 kevp and finally it is ascertained that lines with an
energy of more than 3j900 key could not be detected. The
authors the~nk 0. V. Chubinskiy for the supply of experimental
data. There are 3 figures and 9 references, 5 of which are
Soviet.
Card 2/3

On the Hard Part of the I-Spectrum of Radium Found in SOV/48-23-7-10/31
the Equilibrium With the Products of the Decay (hv-39100+5,600 kev),
ASSOCIATION: Vsesoyuznyy nauchno-iseledovatellskiy institut metrologii im.
D. I. Mendeleyeva (kll-Union Scientific Research Institute
of Metrology imeni D. I. Mendeleyev). Leningradskiy god. uni-
versitet im. A. A. Zhdanova, (Leningrad State University imeni
A. A. Zhdanov)
Card 3/3

21M SOV/48-23-7-16/31
AUTHORS: Bunakov, V,.Ye., Dzhelepov, B. S., Zyollskiy, I., Sergiyenko,V.A.
TITLE: The Coincidences of the Conversion Electrons in the Decay
Se75___+ A875 (Sovpadeniya konversionnykh elektronov pri raspade
75--,
Se b A875)
PERIODICAL: Izvestiya Akademii nauk SSSR. Seriya fizicheskaya, 1959,
Vol 23, Nr 7, pp 859-863 (USSR)
ABSTRACT: The authors investigatedl by means of a lens-0 -spectrometer,
the coincidences of the conversion electrons-of the abOTe-
mentioned decay, the isotope s75 being obtained by a (n t1r)_
reaction in the irradiation of the enriched isotope Se74. The
decay of Se75 was investigated in a number of papers; the lines
of the f-spectrum and the coincidences are indicated. The
spectrumt recorded by the spectrometer, of the conversion
electrons of this decay is shown in figure 1, and is supple-
mented by the level schemo. The observed coincidences of
conversion electrons are indicated, and it is ascertained that
their relative number lies between 0.5 and 3. The coincidences'
Card 1/2 of various lines recorded by the spectrometer are shown in

The Coincidences of the Conversion Electrons SOV/48-23-7-16/31
in the Decay Se75___O As75
several diagrams, and the results are discussed in detail.
Finally, it is stated that the results obtained improve the
data of previous papers (Refs 3-5). The authors thank
A, V. Zolotavin Orig- -at Their dldposal the isotope Se75
and mention L. Gorzhakq student of the LGU, who participated
in the measurements. There are 5 figures, I table# and
6 referencest 3 of which are Soviet.
ASSOCIATIONs Hauchno-iseledovatellskiy
gos. universiteta Ims A,
Institute of Physics of t
A* A. Zhdanov)
fizioheakiy institut Leningradakogo
* Zhdanova (Scientific Research
e Leningrad State University imeni
Card 2/2

21(7) SOV/48-23-7-17/31
AUTHORSs Grigorlyev, Ye. Pe, Dzhelepov, 11. S*p Zolotavin, A* V.
TITLE: On the Transitions Er 160 __;, 110160 and yb166___...4. TU166
(0 perekhodakh :,Pr 16 0--4-Ho 160 1 yt166 0 Tu 166)
PERIODICAM Izvestiya Akademii nauk SSSR. Seriya fizicheekaya, 1959,
Vol 23, Nr 7, pp 864-867 (USSR)
ABSTRACTs In the introduction, it is ascertained that in a number of
16o --O.Hol6o --,,DY160
papers the decays Er and
Yb166 --- $,- Tu 166 Do Er166 have been investigated, and that the
authors in the present paper are concerned with some peculiari-
ties of the first transitions of these chains. It is pointed out
that t*o isomeric states of the isotope Ho160 are known, which
have different half-lives and the quantum characteristic of
which is not known. By theoretical investigations, it was found
out that the lower excited states of the odd-odd nuclei must
necessarily have two levels which have the same parity. The
types of the states of the'isotope Er 160 are investigatled.
Card 1/3 Allowed and first forbidden decays take place in the isotope

On the.Transitions Er 160 PHO 160 and Yb 166 01 Tu 166 SOV/48-23-7-17/31
Er 160 , and it is concluded that the energies of the transitions
Er 16 0-11-Ho 16 0 do not exceed 1 Mey. The authors further assert
that the Er 160_ decays passing the so-called five'-hour isomer
d6 n6t take place on the levels 5 +.2- and 2 + but on any other
higher level . In the investigation of the decay Yb 166___,,Z,166
it is first ascertained that the odd-odd nuclei of the isotope
Tu 166 have an excited level with the energy of 81 kev, and they
are assigned to the type MI. Further it is stated that other
'166
levels of the isotope Tu are not known, and that a position
spectrum corresponding to the transition Yb 166 ----P-Tu 166 was not
found. The mass defect of the Yb 166- and Tu 166_nuclei is
indicated with 117 kev (according to Cameron) and with 436 kev
(according to Riddel), and the decay energy of Yb 166 is
evaluated with not over 1,000 kev. The authors thank
Card 2/3

160 _.0.110160 16 6-0, Tu 166
On the Transitions Er and Yb SOV/48-23-7-17/31
L. N. Zyryanova for contributing her knowledge on the
0 -systematics, and L. K. Peker for the discussion of the
results. There are 3 figures and 19 references, 8 of which
are Soviet.
ASSOCIATION: Nauchno-issledovateltakiy fizicheskiy institut Leningradakogo
gos. universiteta im. A. A. Zhdanova
(Scientific Research Institute of Physics of the Leningrad
State University imeni A. A. Zhdanov)
Card 3/3

210) SOV/48-23-7-18/31
AUTHORS: Grigorlyev, Ye. P., Dzhelepov, B. S., Zolotavin, A. V.,
Krateik, B., Sitterfi-kh, -C.
TITLE: The Decay of Ho 16o and the Level Scheme of Dy 16o
(Raspad Ho 16o i skhema urovney Dy 160)
PERIODICAM Izvestiya Akademii nauk SSSR. Seriya fizicheskaya, 1959,
Vol 23f Nr 7# pp 868-874 (USSR)
ABSTRACT: In a previous paper (Ref 1), the authors had already determined
the level scheme of Dy 16o , but in considering all factors they
come to the result that the upper level does not amqunt to
1718 kev , but that in the decay of the isotope Ho'00 excited
states with energies up to 2900 kev occur. In the present paper,
results of an investigation of the transitions with high levels
of the isotope Dy 16o are put forward. The spectra of the
positrons and of the electrons of the internal conversion were
recorded by a F -opectrometer. The obtaining of the radioactive
sources is dealt with, and the investigation of the 0 +- spectrum
Card 1/3 in the range of weak energies is described. In the range under

The Decay of Ho 160 and the Level Scheme of Dy 16o SOV/48-23-7-18/31
160 kevp a positron excess is observed. which is connected with
a soft component. The components of the spectrum are shown in
a diagram (Fig 1), The balance of the intensities for the
transitions in the isotope Ho160 shows that the transition
with 60 kev amounts to 60% of the decay. It is further
concluded that the number of positrons in the decay is equal
to 0-36%. The authors found 55 new conversion lines which are
compiled in table 2 together with the known lines. The
experimental results were compared with the theoretical results,
and it became clear that some L-lines are superimposed by
K-lines of other transitions. Figures 2 and 3 show two ranges
of the spectrum of the conversion electrons, the half-width
of these lines is indicated, and it is ascertained that in
figure 2 there is a group of lines the identification of which
is very difficult. Prom the results obtained hitherto in this
Card 2/3

The Decay of Ho 160 and the Level Scheme of Dy 160 SOV/48-23-7-18/31
paper, and-in other papers, the extensive level scheme of
the isot9pe Dy 16o is set up, and the balance of the intensities
in Ho16o is evaluated. There are 4'figures, 3 tables, and
4 Soviet references.
ASSOCIATIONt Nauchno-iseledovatellskiy fizicheakiy institut Leningradekogo
goo. utiiversiteta im. A. A. Zhdanova
(Scientific Research Institute of Physics of the Leningrad
State University imeni A, A, Zhdanov)
Card 3/3

ANTONIYEVA, N.M.; BASHILOV. A.A,; DZHYJZPOV, B.S.; PREORRAZHENSKIY, B.N.
Conversion electron spectra of Gd3-46 and BU146 [with su=ar7 in
English]. Zhur.okup. I teor.fiz- 36 no-1:28-31 Ja 159.
(MIRA 12:2)
1. Leningradskiv goaudarstvenn~7 universitet.
(Godolinium--Isotopes) (Europiua-Isotopes) (3lectrons)

21 (8)
AUTHORS: 2jhAL0puv*_.A"*#,.Uchevat~in, I. F., SOV/56-37-3-44/62
Shestopalova, S. A.
TITLE: 0+ - O+-Transition in the Decay Prl4q->Cel4O
PERIODICAL: Zhurnal eksperimentallnoy i teoretich6skoy fiziki, 1959,
Vol 37, Nr 3(9), pp 857 - 859 (USSR)
ABST._~IACT: In an earlier paper it has already been stated that the
Ce140_nucleus has an excited state of the type 0' wij~Oan ex-
citation energy of 1902 kev. This state occurs in La 4decay.
The.-'ground state and the excited states of Ce140 may occur also
in electron capture and in the 0 +_ decay of Pr140. Figure 1
shows the scheme of the possible transitions to the lower ex-
cited states of Cei,110. In the present "Letter to the Editor"
the authors endeavor to show that the 1902 kev level of Ce140
is not excited by the decay of Pr140; as the ground state of
Pr140 is of the type 1+, it may be expected that this state
Card 1/3 occurs in the case of permitted P-decays and in electron cap-

0+ 0+ -Transition in the Decay Pr140 4Ce'40 SOV/56-37-3-44/62
ture. For this purpose, an Nd140 + Pr140 preparation in equi-
librium was investigated in a P-spectrometer with triple
focusing. The counters were filled with argon + 15F,." alcohol
pressure 100 torr). Figure 2& shows the K conversion line
11902 kev) and figure 2b - the Curie diagram for the end of
~
the P-spectrum of Pr140. The results obtained are supplemented
by those obtained by other authors (Refs 4-7). The ratio e- /P+
was determined as being 0.2%. The number of e-(1902) is deter-
mined in consideration of the fact that K- and L-captures in
the case of the permitted decay to the ground state amount to
about 47~~a- Herefrom the number of conversion electrons is de-
termined as amounting to 0.11,1a per decay. Thus, the Ce111(0+)
1902 kev level is far more frequently excited in the decay of
Pr140 than in the decay of La140 (accordine to references 1,7:
0.013P%). Actually, the Ce140 1902 kev level occurs both in
e--capture and in the decay of Pr140. ft = 'r*.106is found
Card 2/3

I + - +_ 140 140
0 0 Transition in the Decay Pr ~-4ce SOV/56-37-3-44/62
for permitted transitions. There are 2 figures and 7 references,
6 of which are Soviet.
ASSOCIATION: Vsesoyuznyy institut metrologii (All-Union Iletrology institute)
SUEHTTED: May 16, 1959
Card 3/3

DZEDLAD72, I-Ye-
Terraces of the Kura River in the Tiflis vicinity. Trudy Geog. ob-va
Grus. sm 3 , io-w 1391, (MIRA 1):11)
(W& Valley-Geology, Structural)

PHASE I BOOK EXPLONATION BOV/4394
-!?~~!-iopovlxB. S. , and G. F. Dranitsym
Sistematika energiy P-raspada (Energy Patterns of p-Decay) Moscow, Izd-vo
AN SSSR., 1960. 57 p. (Series: Svoystva atomnykh yader, vYP- 3)
4,000 copies printed.
Sponsoring Agency: Akademiya nauk SSSR. Radlyevyy institut.
Ed. : Yu . V. Khol Inov, Candidate of Physical Ind Mathematical Sciences; Ed. of Publiahing
House: Ye. A. Semenova; Tech. Ed.: R. A. Zamarayeva.
PURPOSE: This book is intended for scientific workers, aspirants, and advanced
students of higher educational institutions working in the field of nuclear
spectroscopy.
COVERAGE: The booklet is a critical review of the literature on semiempirical and
empirical atomic mass formulas. It includes calculated and experimental
data on energies of bets decay shown in charts'and tables of energy values
C"-1/3-

Energy Patterns of 13-Decay SOV/4394
published up to March 1, 1959- No personalities are mentioned. There
are 32 references; 3 Soviet,, 24 English, 3 Dutch, 1 German, and 1 Swedish.
TAE12 OF CONTENTS:
1. Introduction
3
2. Semiempirical Formulas of Weizs9cker and Bethe-Bacher 3
3- Semiempirical Formula of Fermi
4. Semiempirical Formula of Cameron
4
6
5- Calculation of the She1l Effect 8
6. Calculation of the Shell Effect and Parity of Z and N in
Accordance With the Cameroli Method 10
7- Empirical Formula of Levy 17
8. Energy Patterns of Beta Decay. "The levy Network" 19
Card--?ff ~'

ZTRTANOVA, L.N.; DZ OV, oty,red.; TSV3MKOV, N.V., red.izd-va;
BOCHBYR, .red.
9
[Unique beta-transitionol Unikallnye beta-perekhody. Moskva,
lzd-vo Akad.nauk SSER, 1960. 96 p. (Svoistva atomnykh tader,
no*2)* (MIRA 13-9)
1-Chlon-korrespondent AN SM (for Dshel6pov).
(Waolei. Atomic-Spectra)

DZHnM'OVI B.S.;. ZHUOVSTIY, NoR.; KHOLIKOV, Ta.V., )mnd.fiz.-mat.nauki
-- KALI , MoM. , red.ind-rva; ZAMARAYXVA, R.A., takhn.red.
[Isobaric nuclei with an atomic number of 1101 Izobarnye iadra
s wassovym chiolom A= 110o Moskva, Ixd-vo Akad.nauk SSSR, 1960.
72-P. (Svoistvd atomnykh iader, no.4). (MIRA 13:11)
(Isobars, Nuclear)

DZHELEPOVj B.S.; PRIKHODTSEVA, V.Pej XHOLINOVp Yu.V.; BARKOVSKIYP I.V.p
; BOCHMRp V.T., tekhn.red.
[Isobaric nualgi with a mass mmnber of 1401 Izobarnye iadra 8
massovym chislom A=140. Moskva, Izd-vo Akad, nauk SSSR, 1960.
97 P. (Avoistva atomnykh iader, no. 5.) (MIRA 14:2)
(Isobars, fluclear)

S/048/60/024/03/0'A/()1q
Boo6/BO14
AUTHORS: Gromovq K. Y .9.1)zhelePavt B,.S,, Dmitriyev, A. G~p
Morozovq V A., Yakovlev, K. I.
TITLE: Conversion_.IleotronelLnd Gamma Rays of Tu165
N ---7?
PERIODICAL: I2veatiya Akademii nauk 383R. Seriya fizicheskaya, 1960,
Vol. 249 No- 39 pp. 272-277
TEXT: The article under review was read at the Tenth All-Union Confer-
ence on Nuclear Spectroscopy (Moscow, January 19 - 27, jg6o). The authors
studied the spectrum of the conversion electrons of Tu16 by means of a
magnetic spectrometer of the type "Ketron". The relative half-width of the
lines was 0.4 per cent, the light intensity of the instrument was 0,4 per
cent. The y-ray spectrum was taken by means of a y-scintillation spectro-
meter. The half-width of the 661-kev c9137 line was 12 per cent, In order
to obtain Tu165 tantalum was bombarded with 660-Mev protons for 4 hours
on the synchrocyclotron of the Ob"yedinennyy institut yadernykh
iasledovaniy (11!1~nt Institute of Nuclear Research) at Dubna, Then, the
Card 1/2

Conversion Electrons and Gamma Rays of S/048/60/024/03/03/0101
Tu165 B006/BO14
resulting elements were separated chromatographically~ The conversion-
electron spectrum was studied in the range 85 - 1,200 kev. The spectra
obtained are illustrated in Pigs. I - 3- Each spectral region was taken
three times ever
q 25 - 35 hours. Thus, it was possible to distinguish
the lines of Tul 5 from the lines of other isotopes., The intensity of
the lines was measured relative to the K-243 intensity. The resulting
data permitted the identification of the following new I-transitions:
27M, 312.1, 366.0, (378-4), 389-4, 457.2, 460-4, 471.6, 488.2, (543-5),
566.o, 807.1, 1,133, 1,179, and 1,187 kev. Table I lists all data on the
conversion-electron spectrum (E., Hf, relative intensity, identification,
Y, The y-spectrum obtained is shown in Fig.. 4. The following y-lines
were recorded: (219-240), 296, 3509 4509 540,~ 810, and 1,170 kev, The
relative intensities of these lines are compiled in TablP 2. There are
4 figurO8, 2 tables, and 12 references, 6 of which are Soviet.

S/048 60102W;.'~_.'
B006/BO14
0
AUTHORS: Abdurazakov, A. A,,, Gromov, K. Ya., D.1h2lepov, B. S.,
Norseyev, Yu. V., Umarov, 0. Ya., Chuming V. G.-
TITLE. The 75-minute Activity of Yb
Irf
PERIODICAL: Izvestiya Akademii nauk SSSR. Beriya fizicheakaya, 1960,
Vol. 24, No- 3, pp. 278-282
TEXT: The article under review was read at the Tenth All-Union Confer-
ence on Nuclear Spectroscopy (Moscow, January 19 - 27, 1960). The aut-hor-a
analyzed the spectra of electrons and positrons arising in the decay of
the 75-minute Yb isotope by means of a magnetic P-spectrometer with a
homogeneous magnetic field. The half-width of the C8137 K-line amounted
to 0.8%. Electrons were recorded by an electron counter of the type
MST-17. An analysis of the positron spectrum (Fig. 1) revealed that it
corresponded to a half-life of 75+2 min as,to intensity in all its parts.
Fig. 3 shows one of the decay cur;es of the positron spectrum; its
analysis by means of the Fermi method (Fig. 2) showed that in the range
r1ard 1A

The 75-minute Activity of Yb S/04 60102-1/1'31'041019
B006%014
of 1,300 - 2,940 kev there occurred no deviatione from the shape which is
characteristic of allowed P-transitions. The energy limit of the
P-spectrum is found at 2,94MO kev. A deviation of the spectrum from the
Fermi shape was observed at energies below 1,300 kev. If this deviation
is assumed to be related to a second component of the P-speotrum, its
energy limit should then be at 13001100 kev, L- and M-lines of the
91-5--kev transition and K- and L-lines of the 211-kev transition were
found in the spectrum of conversion electrons. Data on conversion lines
are compiled in Table 1. The mass number of this 75-min isotope has not
yet been safely ascertalnedg but a number of authors believe it to be
167. The opinions of various authors are cited in this connection, among
them B. S. Dzhelepov and L. K. Peker, A. V. Kalyamin and A. Abdurazakov.
To conclude from the investigation results obtained by the authors of the
present paper (Table 2) it does not seem possible to ascribe the mass
numbers 167 and 165 to the 75-minute isotope. Results likewise exclude
163 and 161. The only possible numbers left are 162 and 164, Considera-
tions indicate 164 as the most probable mass number. Fig. 4 shows the
possible decay scheme. To check this assumption, the authors analyzed
Vard 2/3

The 75-minute Activity of Yb S104 60/024/03/04/019
Boo6YBO14
the conversion electron spectrum with a view to determining the Z of
that nucleus in which the 91-5-kev transition, excited in the decay of
75-min Yb, occurs,, Respective data are given in Table 3- It was thus
proven that the 75-min activity Is actually to be ascribed to the mass
number 164. There are 4 figures, 3 tables, and 12 references, 7 of which
are Soviet,,
ASSOCIATION:
Laboratoriya yadernykh problem Ob"yedinennogo instituta
yadernykh iseledovaniy (Laboratory of Nuclear Problems of
the Joint Institute of Nuclear Research) Sredneaziatskiy
politekhnicheskiy institut ((Soviet) Central Asia Poly-
technic Institute)
Card 313

3/04 60/024/031/05/019
.2 )a B006YB014
AUTHORS: Bonch-Osmolovskayat jo A.9~2 1~ ov Kraf
TITLE: Study of Positron Spectra of Neutron-deficient Isotopes
ly / 'Y
PERIODICAL: Izvestiya Akademii nauk SSSR. Seriya fizicheskaya, 1960,
Vol~ 249 No. 3, pp. 283-287
TEXT: The article under review was read at the Tenth All-Union Confer-
ence on Nuclear Spectroscopy (Moscow# january 19 - 27, 196o). The authors
studied the positron spectraor-a-me ne tron- ef c ent so opes o a ne
by bombarding a tantalum target with 680-Mev protons~ The authors used a
P-spectrometer with triple beam focusing. Results are given according to
elements. Lutetium: The hardest component recorded had an energy limit of
about 2,,800 kev. All spectral regions with an energy exceeding 1,500 kev
corresponded to one and the Bame half-life of 85t18 min (Fig. 1). Thus,
it may be seen from the Curie curve shown in Fig. 2 that the energy limit
of the 0+-speotrum was 298OOt2OO kev, corresponding to a half-life of
56t12 min. The above component can, therefore., be ascribed to Lu167
Card 113

Study of Positron Spectra of Neutron- S/048/60/024/03/'~5./f",
deficient Isotopes Boo6/BO14
(55 min). The Curie curve of this isotope is shown in Pig- 3. The problem
of the P'*-speotrum with the energy limit of 29800 kev and T - 85 min has
not yet been solved. Such an isotope is unkno Two explanations are
possible: 1) Such an Lu isotope as,, e.go, Lulrs~actually exists. In this
case also a y-radiation would have to exist for this half-life, which has
not yet been observed. 2) It is the radiation of the 75-minute Yb isotope
(P+-energy limit 2,95 Mev); the -presence of such an impurity is not
impossible. Thulium: The authorej acorded a p+-speotrum with an energy
limit of 2.1 Mev (7.3 hours - Tull ) and one with 137 min (Tu163). As
shown in Fig. 4t the spectrum consists of two components with the energy
limita_l,O5Ot8O and 406t50 kev with an intensity ratio of 1 : 0.7. The
Tu163 Er163 mass difference was a~2,070 kev~ Other authors found 2.1
and 2.24 Mev. Erbium: Intense positron emission with an energy limit of
19300 kev (-.-2-5 hours) was found, further one with 115t15 min. This
spectrum also consisted of two components with the energy limits
11,900�100 and 2p980�100 kev, and an intensity ratio of 5 : 1. Also the
electron-oonversion line with 900 kev (2 hours), which was observed for
the first time by I. A. Dneprovskiy, was detected., Dysprosium- The 1K

S/04BJ60/024/03/06/010,
6 S"~2 0 B006/3014
AUTHORS: Dzhele2ov, B, S., Yemellyanov, B0 A4, Kupriyanovap K. P.p
TITLE: The V-Decay of La140
1i
PERIODICAL: Izvestiya Akademii naukASSR. Seriya fizicheskaya, 1960,
Vol. 24, No. 3# pp. 288-290
TEXT: The article under review was read at the Tenth All-Union Confer-
-ence ovi Nuclear Speotroscopy (Moscow, January 19 - 27, 1960). The data
available on La'140 decay do not permit a definite determination of the
ground-state spin of this isotope. Therefore, the authors of this
article studied the -transition from the ground state of Ta140 to the
ground state of Ce148. Measurements were carried out in the range 1,800
4,000 kev by means of a new p-spectrometer (a 0--hodoseope) by NIFI LGU.
This instrument differs from the P-hodoscope described in Ref. I only in
uses a P-active preparation as electron source, instead of a
~--zet. Altogether, seven series of measurements were made

The p--Decay of La,140
S/04 60/024/03/o6/loir;
Boo6y,3014
with different magnetic field strengths and different sources. Each
series covered an energy range of AE.-,lpOOO key. The results obtaif-ed
were composed in such a manner that the range 1,800 - 4fOOO key was
contiruously covered (Fig. 1). The left-hand diagram of Fig. 1 il-
lustrates the P-spectrum of La140 with the energy limit Elim2::P2200 key.
The electron distribution found between 2,200 and 3,850 key was
identified as a continuous spectrum of the P-transition between the
ground states of La140 and Ce140 and as conversion lines of the
y-transitions of Ce140. Fig. 2 shows the determination of energy limits
by means of Curie curves. The authors found that the most probable spin
value of the La,140 ground state is 3. Further, they detected conversion
lines having electron energies of (2,490t3O) and (2,880�30) key. These
lines had been detected already earlier. A line of (3,100�50) kev was
bound for the first time. The energies of the corresponding y-transitiong
-.;.i,.d the intensities of the conversion lines are listed in a table. The
,-onversion coefficients of the transitions were aK-2,530 = 3.4-1o-4 and
aK-2t920 - 3,1*lo-4. A comparison with theoretical results indicated
-A 0 /A

The 0--Deoay of La140 3/04 60/024/'03/106/0-49
B006%014
that the 2,530-kev 1-transition is an MI transition. The existence of
such an excited level is indicated by the line corresponding to the
nuclear transition of 3PI40 kev. Finally, the authors thank N. D.
Novosilltseva and L. V. Gustova for their assistance. There are 2
figures, 1 table, and 8 references, 7 of which are Soviet.
ASSOCIATION: Nauchno-isoledovatellskiy fizicheskiy institut
Leningradskogo goo. universiteta im. A. A. Zhdanova
(scientific Rosearch Institute of Physics of Leningrad
State University imeni A. A. Zhdanov)
Card 3/3

S/04 60/024/03/'07/01?
B006YI301 A
AUTHORS: Voinova, K. A., Dzhelepov, B. S., Zhukovskiy, N. N.
TITLE: Investigation of the Gamma Radiation of A 1100 in the
Energy Range 0o2 1 2QO May __7f f
PERIODICAL: Izvestiya Akademii nauk SSSR. Seriya fizicheskaya, 1960,
Vol. 24, No. 3, pp. 291 - 299
TEXT: The article under review was read at the Tenth All-Union Confer-
ence on Nuclear Spectroscopy (Moscow,, January 12 - 27, 1960). In recent
years data on the I-emission of A luc appeared in various papers, inter
alia by L. Gustova at al. (Ref- 35'and by the authors of this article
(energy range 650 - 1,600 key). The energies of the y-lines detected by
the various authors in the various energy ranges under consideration
are given in the introductiono The authors analyzed again the y-spectrum
of Ag11O* in the range 0.2 - 2.0 May by means of an elotron. A neutron-
activated sample of approximately 11 g served as source. The initial
activity of the source was about 0.9 curies. Experimental results are
Card 1/3

Investigation of the Gamma Radiation of S/048/60/024/03/07/019
AgIlow in the Energy Range 0.2 1. 2.0 Mev B006/BD14
compiled In diagrams and tables. The 656-kev lines were used as reference
lines. In the range 440 - 1,600 kev 14 lines could be recorded separately.
Their intensity exceeded 1 per cent of that of the 656-kev line. An
analysis of the experimental curves made on the elotron showed that the
ranges 300 - 430 kev and 450 - 600 kev contained no lines with intensities
greater than i per cent and/or 0.8 per cent of that of the 656-kev line.
There was no sign of existence of a 723-kev line in the I-spectrum of
AgIlOYA (as described by Cork et al.), provided its intensity be greater
than 1 per cent of that of the 656-kev line. No y-lines with intensities
exceeding 0.3 per cent were found in the range 950 - 1,350 kev. Next# a
great number of further details are discussedg such as Intensities (Table
1), lifetimes, and multipole types of the various transitions. Further,
the results of numerous papers dealing with decay schemes of isobaric
nuclei vith A . 110 are discussed (Fig. 2). The following is dealt with
in detail: the quantum characteristics of the excited levels of Cd11O
and the pertinent intensity equilibrium, the isomeric transitions in
AgI10 and In110 (Table 2 lists the theoretical K/L values and T of
4211y'
the 120-kev transition in I010 for various multipole types). F! a 1'/13
Card 2/3

Investigation of the Gamma Radiation of S/048/60/024/03/07/019
Ag11O* in the Energy Range 0.2 L 2.0 Mev B006/BO14
the actual possibilities of 0+-decay and of the capture of orbital
electrons in Ag110x and Ag110 are discussed. Mention is made of N.
Antonlyeva. In conclusion, the authors thank V. P. Prikhodtseva and
Yu. V. Khollnov for putting the rytron at their disposal. There are 2
figures, 2 tables, and 34 references, 7 of which are Soviet.
ASSOCIATION: Radiyevyy institut im. V. 0. Xhlopina Akademii nauk SSSR
(Radium Institute imeni V. G. Mopin of the Academy of
Sciences, USSR)
rard 'A PA

t*2.2 0
6 JD/ 0
AUTHORS:
TITLE:
PERIODICAL:
Dzhelepov, B. S., Khollnov, Yu. V.
ly,
The Gamma-Spectrum of Fu152,154 in
245 ~ 500 and 1,450 ~ 2,000 kev'.'
S/04 60/024/03/08/019
B006YB014
the Energy Range
Izvestiya Akademii nauk SSSR. Seriya fizicheskaya, 1960,
Vol. 24, No- 39 PP- 300 - 303
TEXT: The article under review was read at the Tenth All-Vnion Confer-
ence on Nuclear Spectroscopy (Moscow, January 19 - 27, 1960). The
authors studied the I-spectrum by means of a magnotic y-spectrometer
(rytron). A mixture of Eu152 and Eu154, whose total activity amounted
to about 800 millicuries, served as source. The activity ratio between
E154 and E152 was estimated as being 0,21�0.03. The results obtained are
reproduced in two diagrams and a table. The following lines were detected
(the first figure denotes the respective energy of the line, while the
following figure in parentheses denotes the relative intensity referred to
the 344-kev line): 245 kev (35 t 4); it consists of two lines which were
I"K
Card 1/3

The Gamma Spectrum of Eu'52,154 in the Energy S/048/60/024/03/08/019
L
Range 245 q, 500 and 1,450 f 21000 kev Boo6/BO14
inseparable in these investigations: 244.7 kev (Eu152) and 248 kev (EU154).
B. Vn Bobykin and K. W Novik showed that the intensity ratio of these two
lines equals 21.1 : 5.9. Hence, the Eu152 line yields the largest fraction.
344 kev (100). 440 kev (detected by N. N. Zhukovskiy). It corresponds to
the conversion lines 411.23 and 444.23 (Ref 6). The authors of this
article recorded 4154 kev (10.1t2) and 450i4 (11-02). The intensity
sums of these two lines are in good agreement with that calculated by
Zhukovskiy for the 440-kev line- 496�10 kev (2.6t1): This line was
observed by the authors for the first time. It corresponds to a
transition between the levels 1,577 and 1,088 kev (489-kev transition)
or between 19533 and 19050 kev (483-kev transition) of EU152. Also
1,526 t 15 kev (1.2�0,3) was observed for the first time. It may be
assumed that it results from a direct transition fror. the 1,533-kev level
(2-) to the ground level (0+). 1,600 kev (described in Ref. 7). 1,61o 1 7
kev (1.6to.2): no further details available on this line. Besides the
spectrum of recoil electronep Fig. 2 also contains the decay schemes for
Eu152 and Eu154 as published by Zhukovskiy. No lines with relative
intensities >0.1 could be found in the range 1,670 - 2,000 kev. Finally,
Card 2/3 e

"r!'.')39
The Gamma Spectrum of Eu152,154 in the S/048/60/024/03/08/019
Energy Range 245 .1 500 and 1,450 1 2,000 kev B006/BO14
the authors thank A. Ushakova and V. Rumyantsev for their assistance
rendered in measurements. There are 2 figures, 1 table, and 7 references,
4 of which are Soviet.
ASSOCIATION: Radiyevyy inetitut im. V. G. Khlopina Akademii nauk SSSR
(Radium Institute imeni V. G. KhloDin of the Academy of
Card 3/3

B006YB014
AUTHORS: Dzhelepov# B. So, Dolgoborodova, M. A.
TITLE: Resonance Scattering of La140 Gamma Rays
7F -71 71
PERIODICAL: Izvestiya Akademii nauk SSSR. Seriya fizicheakaya, 1960#
Vol. 24, No. 3, PP. 304 - 310
TEXT: The article under review was read at the Tenth All-Union Confer-
ence on Nuclear Spectroscopy (Moscow, JanuarX 19 _-_77, 1960). The authors
studied the scattering of gamma rays of Lal4u by Ce'4-. TE-eLs.140
preparation was used as gamma source in the form of a nitric acid
La(N03)3--solution4 The experimental arrangement is schematically shown in
Fig. 1* Ce02-and L&203 cylinders weighing about 3 kg served as scatterers.
The mean scattering angle was.810. A cylindrical NaI(Tl) crystal with an
FEU-24.photomultiplier was used as detector. The half-width of the total
absorption peak of the 19597-kov line was 13 per cent. The counter system
was prevented from being charged by a 12 mm thick lead shield which was
inserted between the crystal and the scatterer. Eleven series of
S/04 60/024/03/09/019
Card 1/3

Resonance Scattering of La140 Gamma Rays S/04 60/024/03/09/019
B006YB014
measurements were carried outp in which CeO2 and La-03 were alternately
used as scatterers. Fig. 2 shows some scattering curves as measured in
one series. The peaks at 1097 kev (the first excited level of COO)
are distinctly marked. The resonance scattering curves of all eleven
series of measurements are shown in Fig. 3. The width of the level which
was excited in the scattering could be determined by measuring the
intensity of resonance scattering. For this purpose the formula
(21*+I);L mr was used (a - resonance scattering cross section
(210+1)4 7
averaged over the microapeotrum, Io and I* - spine of the ground- and
excited level, X - wavelength of the scattered ray, m - fraction of the
microspectrum, corresponding to a 1 ev broad band in the resonance rangey
r - desired radiation width of the level). For the case under consider-
alion it holds that 101c; Of It - 2, X - 7.8-10-11cm. For determining
71 it is necessary to ow a and m. The determination of a, which is
described in great detail, yielded ; - (8-4 t 1 0) mb. In the following,
the determination of m from the microspectrum. iFig. 7) of gamma rays
Card 2/3

Resonance Scattering of La.140 Gamma Rays S/048/60/024/03/09/'019
B006/BO14
is described. The authors obtained m - 0.008 1 0.003, wherefrom It_ 12
followed that r, - 1.4-lo-4ev and T ~20,597 kev) - (3.3 t 1.3)-10
see. The data ottained are finally .cussed and compared with the
results furnished by other authors. Mention is made of A. A. Tkachenko,
who calculated the shape of the microspectrum. The decay scheme of
La140 is shown In Fig. 6. There are 7 figures, I table, and 3 non-Soviet
references.

.2
S/048/60/024/03/lO/Oi9
B006/BO14
AUTHORS: 'Dzhelegov B. S., Rumyantsevt V. L., Khollnov, Yu. V.
1"" " '
3 h ol~u, , _Yi_,__
TITLE: The Gamma Spectrum of 187
V1 I
PERIODICAL: Izvestiya, Akademii nauk SSSR, Seriya fizicheskaya, 1960,
Vol. 24P No- 3, PP- 311-312
TEXT: The article under review was read at the Tenth All-Union Confer-
ence on Nuclear Spectroscopy (Moscowx January 197-771_,_T~60L. The
authors studied the y-emission of W101 by means of a magnetic yapectro-
meter (rytron); three series of measurements were made with a source of
about 1,000 millicuries. The total spectrum of recoil electrons is
illustrated. The measured energies and the relative intensities referred
to the intensity of the 488-kev line are compiled in a table. The
following lines (in kev) - the respective intensities are given in
parentheses - were detected: 488 000) 558 (22-5tl-7), 622 (31.2t2.5),
691 (119t7), 778 (22.2�1.5), e64 1 9 6.4 � 0-3), 891 j 9 0-1 � 0-3)-
Card 1/2

The Gamma Spectrum of v187 S/04 60/024/03/10/019
BOo6YBO14
These results are compared with those obtained by Mueller et al. and
Dubey et al,No y-lines with intensities >O-3 per cent of that of the
488-kev line could be observed in the range 950 -. 1,350 kev. There are
1 table and 6 references, 1 of which is Soviet.
ASSOCIATION: Radiyevyy institut im. V. G. Khlopina Akademii nauk SSSR
(Radium Institute imeni V. G. KhloDin of the Academv of
So
rlav-A

DZH OV, B.S.; UGHEVATKIN, I.F.; SHISTOPAWVA, S.A.
Spectrum of conversion electrons of neutron deficient isotopes of
lutetium in the energy region of 1000-3500 kev. Izv.AN SSSR Ser.
fix. 24 no-7:802-806 ii l6o.. (MIRA 13:7)
1 YeesoyuzW nauchno-iseledovatel'skiy institut metrologli imeni
D:I.Mendeleyeva.
(Lateciu*--Isotop6a)

ABDUR.kZAKOV, A. A.; GRONOT. K-Ta-; DZEIZ B.S.; UKkROV, G.Ta.
Spectrum of conversion electrons of a dysprosiwn fraction.
Izv.AN SSSR.Ser.fiz. 24 no.9:1126-1134 S 160. (MIRA 13:9)
1. Sredne-Aziatakly politekhnichoskiy institut i Ub*yedineuW
institut yadernykh issledovanty.
(Dysprosium--Isotopea) (Electrons--Spectra)

S/04 60/024/007/012/032/XX
.z If -. 6140 B01 9~YBO56
AUTHORS: Basins, A~ S.. Dzhel!j~, B~.S, '. and Chikhladze, V. A,
TITLE: The Lu 167 + Yb 167 Conversion Electron Spectrum
If -/~ 01Y
PERIODICAL: Izvestiya Akademii nauk SSSR. Seriya fizicheskaya: '960,
Vol, 24, No. 7, PP. 807-810
TEXTs This paper was read at the 10th All-Union Conference in Nuclear
Spectroscopy, which took place in Moscow from January 19 to 27, 1960, The
lutecium fraction, which had been obtained by chromatographic separation
of rare earths, was investigated with a lens spectrometer having a re-
solution of 2%. The rare earths were spallation products of Ta. The source
was produced by the evaporation of lutecium lactate on an Al backing; ite
diameter was not greater than 4 mm. The Ta targets were bombarded with
fast protons on the proton-synchrotron of OIYal for 15 to 30 minutes, Tnp,
fraction was separated 1 hour and 50 minutes after exposure. 50 minlites
later, the conversion spectrum was studied~ It was the purpose of th~-
present work to investigate the conversion electron spectrum of
Card 1/6

65 158o
The Lu. 167 +- Yb 167 Conversion Electron S"/048/60/024/007/0'.2/032//XX
Spectrum B019/BO56
Lu 167 + Yb 167 within the energy range from 30 to 340 kev. Within +Ihi,~
energy range there are lines that are formed by the decay of
Lu 167 Yb 167 -) Tu 167 R r167. The experimental spectrum of Ud 167#Yb 167~
recorded one hour aftA sep~r-atiff, is shown in Fig. 1, In the convergion
electron spectrum, a number of very bright lines having the half-life of
55�5 minutes were found to exist I to 6 hours after separation. After
these lines had vanished, 208 kev e-transition lines rould be observed.
which are formed in the decay of Tu 167. The energies and the relative
intensities of the conversion lines for Lul67--,,Ybl67 and Yb167-..Tu,67
decays are given in Tables 1 and 2. The intensity of the LU167 K 239 1.~np
is 35=-55% of that of the Yb1 67 L-106 line. In Table 3, unidentified -)n-
vursion lines of (Lu 167 + Yb 167) are given, which did not appear in the
paper by Mihelich et al, (Ref. 7)- P. M~ Aron: A. V. Kalyamin t al~
(Ref, 4), K. Ya. Gromov and I. S. Dneprovskiy--(Ref~ 8) are mentioned~
There are 1 figure, 3 tables. and 8 referencesi 6 Soviet and 2 US-

9~E~80
S/048/60/024/007/012/032/XX
BO19/BO56
ASSOCIATIO~: Nauchno-issledovatellskiy fizicheskiy institut Leningradskago
gos. universiteta im. A. A. Zhdanova (Scientific Re*earch -
167 167
The LU + Yb Conversion Electron
Spectrum
A. Al--Zhdanov) Obl'yedinennyy institut yadernykh issledovaniy
(Joint Institute-of Nuclear Research)
Ta6nng4 3
HenwiTn4inumpo~ninime nounepenon-
lible weirrpouii (Lu'47 + Yblgl),
OTC)-r(-rllylOIIUIC n paGoru (71
E keV
T. ~Muu
.68 9 5 50�10
76:0 IOCL�40 30�15
160,0 60�15 30
5

I(Ollnepellonflue 9.1eltillollbl, poalmunionkne npn p Ta6,,imtka
nenn;xc Lully~Yblll

E keV E,. k~V T. ..ut
1
1
,111111-
U0 no ui
3
,
flum
1

151,G
212.9
58+5 424-6

1
46
K-213
176,G 2,U
~
2,15 I IC#) K-239

4

77 7

5
65 00

19�5
i

6 K-278
228 238 6~51 15 t7�4 19 L-239
339,5 1 400.8 .5 6 + 5 1 10-4-2 to K-401
Card 3/6 r

S/048/60/024/007/012/032/XX
B019/BO56
Ta 6.t it it a 2
)(0imppelloillmo vaelri-polibl, imaimnammisso npii parnato Y1087-Tu'll
11irreucuruoCTb
E kev Ey. kev T, mitu
110 113ull %t no 171
;I"lljlll,j

46.7 106 56�5 3404-70 1 370 K- 106
53.5 112:2 55�5 190--C40 155 K-1 13
57,6 11009 - 25--L-.,,
- 22 K-I!G
60,8 (33 - 13
19 24.
95.7 105's 55�5 160 106 L-106
W3.6 105,9 5c,�5 58� 50 M-IN;
i
it 1-113
108 M - 16-L7 23 L-Ilf)
1113, 5, 175, 6' 53�5 16Z5 11 K-176
122.3 131,4 55;~s l4a:in' J 3 L-132
3AeC l, Taitme K. 1 2-9 1.1110.
Alr,

C ard 5/6

t2

S/048/60/024/007/012/032/,U

8~580
B/048/60/024/007/012/032/XX
B019/BO56
x
#12
1111C. 1

S/048/60/024/007/013/032/XX
Z'~ ~ 720 B019/BO56
AUTHORS: Basins, A. S., Gromov, K. Ya., and Dzhelepov, B. S.
TITLE: The Conversion Electron Spectrum of the Dysprosium Fraction
71
PERIODICAL: Izvestiya Akademii nauk SSSR. Seriya fizicheskaya, 1960,
Vol. 24, No. 7, pp. 811-816
TEXTs This paper was read at the iOth All-Union Conference on Nuclear
SpActroscopy, which tuok plat-.e from January 19 to January 27, 1960 at
Moscow. The investigations described here were carried out by means of a
~-spectrometer having a resolution of roughly 1.9%. The dysprosium fract-.on
was chromatographically separated from rare earths. The rare earths had
been obtained by irradiation of a Ta-target (15-20 minutes) with fast
protons. Separation of the dysprosium fraction took place 2 hours after the
irradiation of the target. Measurements began roughly I hour after the
fraction separation. The preparation was produced by previous evaporation
of dysprosium lactate and following transfer of the activity by means of a
weak acetic solution upon an Al foil. The source had a diameter of 3 am-
Card 1/5

85561
The Conversion Electron Spectrum of the S/048/60/024/007/013/032/XX
Dysprosium Fraction B019 B056
The emission of the following isotopes was observed; 152 153 155,
D, Dy Dy
157. Dy154 159
and Dy and Dy were not observed. During the f Irst 30 hours,
the conversion electron spectrum was measured continuously, and in the
course of the following days it was measured orce in each case. In this
spectrum lines having the halflife of 6, 6 - 11, and roughly 20 hours, as
well as several days were observed. Besides it was found that the intensity
of a number of linee at first grew with a period of 2-5 hours, after which
it decreased within a period of roughly 20 hours. The known data make It
possible to assign the halflife of 8-11 houre to the Dy155- and Dy157.
isotopes, and the longer periods to the Tb-daughter activities. The
assignment of the halflives of roughly 6, 2-5, and 20 honr_~ is furth r
discussed. On the basis of known data, the spectra of Dy'57 and DyM
are discussed, and it was found that the L-82 and m-a2-lines do not belong
to D 157~ and that no lines could be observed that might. be assigned to
Dy154 or T1154 Furthermore, the authors were able to prove that Dy153
was preaent'77~the preparaticn under invontigation. In Table I tho valuea
for the conversion electrons of Dy153 are given In the first column,
n-A 0/a

The Conversion Electron Spectrum of the S/048/60/024/007/013/032/XX
Dysprosium,Fraction B019/B056
the energy!of the conversion electrons, in the second the nnergioo of
transitions, in the third the periods, in the fourth the relative in-
tensities,.and in the fifth column the identifications are given. From
those lines whose intensity at first grows with a period of 2.5 hours,
after which it fallst the authors -Fonclude that the followine decay exists:
152 152 152. 151 152 154
Dy -5~h -) Tb Gd - Thus, the three Tb Tb and Tb
probably elist with a halflife o 18 hours. In Table 2, the values of the
conversionjelectrons of Tb152 are given' together. In the first column,
the energits of the conversion electrons, in the second the energy of the
er-transitio:ns, in the third the relative intensities, and in column four
the identikications are given. The results obtained indicate the
152 1152
Tb decay scheme shown in Fig- 3- N, M- Antonlyeva, A. A.
Bashilov. 1. N. Dobronravova, I. N. Rogachev, and I. Zvoltskiy are mention-
ed. The authors thank V. A. Morozov and G.. K,-.11ironay- for their help in
measurements, and also I. A. Yutlandov and V. A. Khalkin for carrying out
chemical work. There are 3 figures, 2 tables, and 15 references: 9 Soviet,
and 6 US.
Card 3/5