ENTRY 32793 20190622 31903279300000001 SUBENT 32793001 20190622 31903279300100001 BIB 14 77 3279300100002 TITLE Mass distributions of 22.0 MeV neutron-induced 3279300100003 fission of 238U 3279300100004 AUTHOR (Liu Yonghui,Yang Yi,Feng Jing,Bao Jie,Li Ze,Qi Bujia, 3279300100005 Tang Hongqing,Zhou Zuying,Cui Anzhi,Ruan Xichao, 3279300100006 Sun Hongqing,Zhang Shengdong,Guo Jingru) 3279300100007 INSTITUTE (3CPRAEP) 3279300100008 REFERENCE (P,INDC(CPR)-056,2,2001) 3279300100009 FACILITY (VDGT,3CPRAEP) The HI-13 Tandem 3279300100010 INC-SOURCE (D-T) The tritium gas chamber was used to produce 3279300100011 neutrons by the bombardment with the deuteron beam. 3279300100012 SAMPLE Natural uranium metal disks of 1.6 cm diameter X 0.05 3279300100013 cm thickness with an average weight of about 1.5 g, 3279300100014 packed in 0.2 mm thickness pure aluminium foil. 3279300100015 DETECTOR (HPGE) A HPGe-92X Spectrum Master of gamma- 3279300100016 spectrometer. The resolution of the 120 cm3 HPGe 3279300100017 detector was 1.85 keV (FWHM) for the 1.33 MeV gamma 3279300100018 ray of Co-60. 3279300100019 (FISCH) The sample sandwiched between two 3279300100020 standardized thin samples was mounted in a double 3279300100021 fission chamber, which covered with Cd of 1 mm 3279300100022 thickness. The efficiency of the fission chamber was 3279300100023 checked by 197Au(n,g) 198Au reaction with thermal 3279300100024 neutrons. 3279300100025 METHOD (TOF) Time of flight technique was used to measure 3279300100026 the neutron spectrum. 3279300100027 (GSPEC) Fission product activities were measured by 3279300100028 HPGe gamma-ray spectrometry. Four samples were 3279300100029 irradiated for a period varying from 0.5 to 30 h at a 3279300100030 distance of about 5 cm from the neutron source in the 3279300100031 direction of zero degree. 3279300100032 (ABSFY) Fission rate was monitored by fission chamber. 3279300100033 DECAY-DATA (35-BR-84-G,31.8MIN,DG,881.2,0.42) 3279300100034 (36-KR-85-M,268.8MIN,DG,304.9,0.140) 3279300100035 (36-KR-87,76.3MIN,DG,402.6,0.496) 3279300100036 (36-KR-88,170.4MIN,DG,196.3,0.2558) 3279300100037 (37-RB-89,15.15MIN,DG,1248.1,0.4257) 3279300100038 (38-SR-91,577.8MIN,DG,555.6,0.615) 3279300100039 (38-SR-92,162.6MIN,DG,1384.1,0.90) 3279300100040 (39-Y-93-G,610.8MIN,DG,266.9,0.073) 3279300100041 (39-Y-94,18.7MIN,DG,918.8,0.56) 3279300100042 (40-ZR-95,92189.MIN,DG,756.7,0.5446) 3279300100043 (40-ZR-97,1014.MIN,DG,742.7,0.9306) 3279300100044 (42-MO-99,3956.7MIN,DG,739.5,0.1214) 3279300100045 (43-TC-101,14.2MIN,DG,306.5,0.88) 3279300100046 (44-RU-103,56526.MIN,DG,497.1,0.909) 3279300100047 (43-TC-104,18.3MIN,DG,358.,0.89) 3279300100048 (44-RU-105,266.4MIN,DG,724.2,0.473) 3279300100049 (47-AG-112,187.8MIN,DG,617.5,0.435) 3279300100050 (48-CD-115-G,3208.3MIN,DG,336.3,0.501) 3279300100051 (51-SB-127,5544.MIN,DG,473.2,0.256) 3279300100052 (50-SN-128-G,59.1MIN,DG,482.,0.59) 3279300100053 (53-I-131,11577.6MIN,DG,637.,0.0717) 3279300100054 (52-TE-132,4694.4MIN,DG,228.3,0.882) 3279300100055 (53-I-133-G,1248.MIN,DG,529.8,0.87) 3279300100056 (53-I-134-G,52.6MIN,DG,847.1,0.954) 3279300100057 (53-I-135,394.2MIN,DG,1131.5,0.2274) 3279300100058 (55-CS-138-G,33.41MIN,DG,1435.8,0.763) 3279300100059 (56-BA-140,18354.MIN,DG,537.3,0.2439) 3279300100060 (56-BA-141,18.27MIN,DG,190.3,0.46) 3279300100061 (57-LA-142,91.1MIN,DG,641.3,0.474) 3279300100062 (58-CE-143,1980.MIN,DG,293.3,0.428) 3279300100063 (59-PR-146,24.15MIN,DG,453.9,0.48) 3279300100064 (60-ND-147,15811.2MIN,DG,531.,0.131) 3279300100065 CORRECTION Corrections were made for the gamma self-absorption, 3279300100066 gamma geometry, gamma cascade coincidence losses and 3279300100067 fission induced by background neutrons. 3279300100068 ERR-ANALYS (DATA-ERR) Uncertainties (1 sigma) of the yields were 3279300100069 obtained by consideration of all known sources of 3279300100070 systematic and random errors such as mass 3279300100071 determination of standard sample, detector efficiency 3279300100072 of HPGe spectra system, statistic error of gamma-ray 3279300100073 peak area, and corrections, with the usual rules of 3279300100074 error propagation. Uncertainties of decay data are 3279300100075 not included. 3279300100076 STATUS (TABLE) Data were obtained from TABLE 2 of 3279300100077 P,INDC(CPR)-056,2,2001 3279300100078 HISTORY (20190622C) Compiled by Liu Lile (CNDC) 3279300100079 ENDBIB 77 0 3279300100080 COMMON 1 3 3279300100081 EN 3279300100082 MEV 3279300100083 22.0 3279300100084 ENDCOMMON 3 0 3279300100085 ENDSUBENT 84 0 3279300199999 SUBENT 32793002 20190622 31903279300200001 BIB 1 1 3279300200002 REACTION (92-U-238(N,F)MASS,CHN,FY) 3279300200003 ENDBIB 1 0 3279300200004 NOCOMMON 0 0 3279300200005 DATA 3 32 3279300200006 MASS DATA DATA-ERR 3279300200007 NO-DIM PC/FIS PC/FIS 3279300200008 84. 0.79 0.108 3279300200009 85. 1.63 0.096 3279300200010 87. 1.90 0.041 3279300200011 88. 2.67 0.052 3279300200012 89. 3.68 0.107 3279300200013 91. 3.58 0.019 3279300200014 92. 3.94 0.017 3279300200015 93. 4.21 0.237 3279300200016 94. 3.99 0.058 3279300200017 95. 5.81 0.089 3279300200018 97. 6.09 0.180 3279300200019 99. 5.99 0.103 3279300200020 101. 5.03 0.083 3279300200021 103. 4.02 0.024 3279300200022 104. 3.67 0.093 3279300200023 105. 3.32 0.025 3279300200024 112. 1.63 0.016 3279300200025 115. 1.41 0.040 3279300200026 127. 1.78 0.024 3279300200027 128. 2.06 0.865 3279300200028 131. 3.96 0.073 3279300200029 132. 4.31 0.053 3279300200030 133. 5.69 0.021 3279300200031 134. 6.04 0.178 3279300200032 135. 6.03 0.232 3279300200033 138. 4.76 0.126 3279300200034 140. 4.05 0.044 3279300200035 141. 3.81 0.213 3279300200036 142. 3.52 0.070 3279300200037 143. 3.64 0.019 3279300200038 146. 2.18 0.129 3279300200039 147. 1.75 0.140 3279300200040 ENDDATA 34 0 3279300200041 ENDSUBENT 40 0 3279300299999 ENDENTRY 2 0 3279399999999