ENTRY 41499 20070821 41414149900000001
SUBENT 41499001 20070821 41414149900100001
BIB 12 36 4149900100002
REFERENCE (J,AE,102,(3),189,2007) 4149900100003
(J,AE/T,102,(3),232,2007)Engl.translation of AE,102,1894149900100004
TITLE Determination of Pu-240 spontaneous fission products 4149900100005
yields. 4149900100006
AUTHOR (A.V.Bushuev, V.N.Zubarev, A.F.Kozhin, E.V.Petrova, 4149900100007
T.K.Ragimov, A.M.Petrov, G.N.Vlaskin, V.I.Timonin, 4149900100008
A.A.Samoylov) 4149900100009
INSTITUTE (4RUSMIF) - Bushuev, Zubarev, Kozhin, Petrova 4149900100010
(4RUSRUS) Institute of nonorganic materials 4149900100011
- Ragimov, Petrov, Vlaskin, Timonin, Samoylov4149900100012
SAMPLE Two samples of metallic plutonium as sphere covered 4149900100013
twice by stainless steel of 2mm thickness: 4149900100014
1. Mass - 82.93g, Radius - 1.05 cm. 4149900100015
2. Mass - 41.46g, Radius - 0.83cm. 4149900100016
Content: Pu-238 < 1.E-4%, Pu-239 - (7.86 +- 0.01)%, 4149900100017
Pu-240 - (91.07 +- 0.01)%, Pu-241 - (0.88 +- 0.01)%, 4149900100018
Pu-242 - (0.17 +- 0.01)%. 4149900100019
Am-241 content - about 3% of plutonium mass. 4149900100020
DETECTOR (GE) Coaxial germanium detector, protected by borated 4149900100021
polyethylene (40mm), lead (4mm) and cadmium (2mm).4149900100022
Efficiency - 60%, resolution - 1.9 keV for 4149900100023
E-gamma=1332 keV. 4149900100024
Energy dependence of detector efficiency was defined 4149900100025
by Eu-152 and Ra-226 sources. 4149900100026
METHOD (GSPEC) 4149900100027
ANALYSIS The spontaneous fission yields are calculated by 4149900100028
ratio of counts in gamma-peaks of fission products and4149900100029
counts in peak og 642. keV gamma-ray of Pu-240. 4149900100030
CORRECTION Corrections for: 4149900100031
- Self-Absorption of gamma-rays of Pu-240 and fission 4149900100032
products , 4149900100033
- Initiated fission, 4149900100034
- Spontaneous fission of other isotopes - 0.995%. 4149900100035
ERR-ANALYS (DATA-ERR) Errors are not specified. 4149900100036
STATUS (TABLE) Table of Reference. 4149900100037
HISTORY (20070821C) Compiled at CJD. M.M. 4149900100038
ENDBIB 36 0 4149900100039
NOCOMMON 0 0 4149900100040
ENDSUBENT 39 0 4149900199999
SUBENT 41499002 20070821 41414149900200001
BIB 3 17 4149900200002
REACTION (94-PU-240(0,F)ELEM/MASS,IND,FY) 4149900200003
Yields of Pu-240 Spontaneous fission 4149900200004
DECAY-DATA (94-PU-240,,DG,642.4) 4149900200005
(37-RB-94,,DG,1309.,0.871) 4149900200006
(38-SR-92,,DG,1383.,0.90) 4149900200007
(38-SR-94,,DG,1428.,0.942) 4149900200008
(39-Y-96-M,,DG,1107.,0.481,DG,1751.,0.882) 4149900200009
(51-SB-132,,DG,973.9) 4149900200010
(51-SB-133,,DG,1096.,0.430,DG,1132.,0.226) 4149900200011
(53-I-134,,DG,847.1,,DG,1072.6) 4149900200012
(53-I-135,,DG,1260.,0.287,DG,1796.,0.077) 4149900200013
(53-I-136,,DG,1321.,0.248) 4149900200014
(54-XE-138,,DG,1768.,0.167) 4149900200015
(55-CS-138-G,,DG,1436.,0.763) 4149900200016
(55-CS-138-M,,DG,1436.,0.190) 4149900200017
(57-LA-140,,DG,1596.,0.954) 4149900200018
FLAG (1.) Yield for sum Cs-138-g + Cs-138-m 4149900200019
ENDBIB 17 0 4149900200020
NOCOMMON 0 0 4149900200021
DATA 6 10 4149900200022
ELEMENT MASS ISOMER DATA DATA-ERR FLAG 4149900200023
NO-DIM NO-DIM NO-DIM PC/FIS PC/FIS NO-DIM 4149900200024
37. 94. 1.23 0.04 4149900200025
38. 92. 2.92 0.14 4149900200026
38. 94. 3.94 0.06 4149900200027
39. 96. 1. 1.13 0.16 4149900200028
51. 133. 3.26 0.18 4149900200029
53. 135. 8.13 0.15 4149900200030
53. 136. 3.65 0.40 4149900200031
54. 138. 7.60 0.29 4149900200032
55. 138. 6.85 0.18 1. 4149900200033
57. 140. 5.70 0.18 4149900200034
ENDDATA 12 0 4149900200035
ENDSUBENT 34 0 4149900299999
ENDENTRY 2 0 4149999999999