ENTRY 32762 20181214 31873276200000001
SUBENT 32762001 20181214 31873276200100001
BIB 14 49 3276200100002
TITLE Fission product yields in thermal neutron-induced 3276200100003
fission of 235U 3276200100004
AUTHOR (Yang Yi, Li Ze, Cui Anzhi, Liu Yonghui, Liu Daming, 3276200100005
Tang Peijia, Li Xinhua, Sun Hongqing, Li Daming, 3276200100006
Zhang Shengdong, Guo Jingru) 3276200100007
INSTITUTE (3CPRAEP) 3276200100008
REFERENCE (J,CST,34,(S1),170,2000) 3276200100009
FACILITY (REAC,3CPRAEP) Heavy-water reactor 3276200100010
INC-SOURCE (REAC,THCOL) Thermal neutrons from the thermal column 3276200100011
of heavy-water reactor. Neutron beam filtered through 3276200100012
monocrystalline silicon, the cross-section with 8 cm 3276200100013
in diameter. 3276200100014
SAMPLE (92-U-235,ENR=0.902) Isotopic composition of the 3276200100015
sample are 234U (1.1%), 235U (90.2%), 236U (0.3%) and 3276200100016
238U (8.4%). The thick uranium with 16 mm in 3276200100017
diameter and 0.4-0.8 g/cm2 thick was wrapped by pure 3276200100018
aluminium foil with 5 mg/cm2 thick. The thin standard 3276200100019
uranium with 16 mm in diameter and 0.3-0.4 mg/cm2 3276200100020
thick was electrodeposited on the platinum foil with 3276200100021
0.10-0.15 mm thick. 3276200100022
DETECTOR (HPGE) The volume of P-type coaxial HPGe detector is 3276200100023
110 cm3. For gamma energy 1332.5 keV the gamma-energy 3276200100024
resolution FWHM is 1.8 keV. The distance between 3276200100025
detector and sample can be adjusted. At a distance of 3276200100026
31.6 cm, the detection efficiency was calibrated 3276200100027
relatively using Eu-152, and was calibrated 3276200100028
absolutely using various standard gamma sources, 3276200100029
which were Mn-54, Co-57, Zn-65, Cd-109 and Cs-137. 3276200100030
The ratio of detection efficiency between distance of 3276200100031
1.3 cm and 31.6 cm, was mensurated using Cr-51, Mn-54, 3276200100032
Zn-65, Zr-95, Ru-103, Cs-137, Ba-140, Ce-141 and 3276200100033
Ce-144. The uncertainty of efficiency is less than 2% 3276200100034
at 1.3 cm distance. 3276200100035
(FISCH) Double-fission chamber were used to measure 3276200100036
the absolute fission rate. 3276200100037
METHOD (ABSFY,FPGAM) 3276200100038
ANALYSIS Decay gamma spectrum area were determined with SPAN 3276200100039
code. 3276200100040
CORRECTION (1) gamma self-absorbtion for thick sample. 3276200100041
(2) geometry. 3276200100042
(3) neutron scattering from the wall of fission 3276200100043
chamber. 3276200100044
ERR-ANALYS (DATA-ERR) Absolute uncertainty of measurement. 3276200100045
(ERR-1,,2.0) Uncertainty of efficiency of HPGe is 3276200100046
less than 2.0%. 3276200100047
STATUS (TABLE) Data taken from Table 2 of Atom. Ener. Sci. 3276200100048
and Tech.,34(S1) 170,2000. The data for 105Cd and 3276200100049
124Sb were discarded that approved by first author. 3276200100050
HISTORY (20181213C) Wang Jimin and Liu Yangyang (CNDC) 3276200100051
ENDBIB 49 0 3276200100052
COMMON 1 3 3276200100053
EN-DUMMY 3276200100054
EV 3276200100055
0.0253 3276200100056
ENDCOMMON 3 0 3276200100057
ENDSUBENT 56 0 3276200199999
SUBENT 32762002 20181214 31873276200200001
BIB 2 3 3276200200002
REACTION (92-U-235(N,F)ELEM/MASS,CUM,FY) 3276200200003
REL-REF (R,,R.B.Firestone,B,FIRESTONE,,,1996) 3276200200004
Source of decay data 3276200200005
ENDBIB 3 0 3276200200006
NOCOMMON 0 0 3276200200007
DATA 5 17 3276200200008
ELEMENT MASS ISOMER DATA DATA-ERR 3276200200009
NO-DIM NO-DIM NO-DIM PC/FIS PER-CENT 3276200200010
36. 85. 1. 1.32 3.5 3276200200011
36. 87. 2.73 4.0 3276200200012
36. 88. 3.25 3.5 3276200200013
38. 91. 5.58 3.5 3276200200014
38. 92. 5.86 4.0 3276200200015
40. 95. 6.51 2.6 3276200200016
40. 97. 5.82 3.5 3276200200017
44. 103. 3.07 2.5 3276200200018
53. 131. 3.07 4.0 3276200200019
53. 133. 6.51 3.2 3276200200020
53. 134. 7.19 5.1 3276200200021
53. 135. 6.45 3.6 3276200200022
55. 138. 6.64 4.4 3276200200023
56. 140. 6.24 2.6 3276200200024
57. 142. 6.09 5.0 3276200200025
58. 143. 5.88 3.4 3276200200026
60. 147. 2.29 2.7 3276200200027
ENDDATA 19 0 3276200200028
ENDSUBENT 27 0 3276200299999
ENDENTRY 2 0 3276299999999