ENTRY 32635 20100219 31473263500000001 SUBENT 32635001 20100219 31473263500100001 BIB 16 63 3263500100002 TITLE The measurement of cumulative fission yield of U-235 3263500100003 induced by thermo- and fission spectrum neutrons by 3263500100004 using Ge(Li) detector 3263500100005 AUTHOR (Wang Yusheng,Tang Funan,Zhou Ling,Tang Peijia, 3263500100006 Kang Jingxiu) 3263500100007 INSTITUTE (3CPRAEP) 3263500100008 REFERENCE (J,HFH,2,(3),129,198008) 3263500100009 SAMPLE Both U3O8 and metallic uranium were used for sample, 3263500100010 its weight are as follows : 3263500100011 sample weight for fission weight for thermal 3263500100012 neutron (Mg) neutrons (mg) 3263500100013 metallic U 744.15 and 839.10 754.80 and 812.80 3263500100014 U3O8 632.13 630.85 3263500100015 isotopes component are as follows : 3263500100016 U-234 U-235 U-236 U-238 3263500100017 0.011 0.902 0.003 0.084 3263500100018 FACILITY (REAC,3CPRAEP) Heavy-water reactor 3263500100019 INC-SOURCE Thermal neutrons from horizontal hole of reactor. The 3263500100020 fission spectrum neutrons were produced by a 150 gram 3263500100021 enriched uranium (90% of U-235) convertor 3263500100022 irradiated by the thermal neutrons beam. The intensity 3263500100023 was about 1. x 10**9 n/4Pi/sec 3263500100024 METHOD (FPGAM) 3263500100025 DETECTOR (GELI) A 145 cm3 coaxial Ge(Li) detector with 3263500100026 resolution 2.0 keV at 1332.5 keV gamma ray of Co-60 3263500100027 was used for gamma measurement. The absolute efficiency3263500100028 was calibrated with a series of standard sources : 3263500100029 Sc-46,(Zr-95)-(Nb-95),Ag-108m,Cs-137,Ce-144, 3263500100030 (Ba-140)-(La-140),Ta-182. 3263500100031 (FISCH) a back-to-back fission ionization chamber was 3263500100032 used for fission rate measurement. 3263500100033 CORRECTION Corrections were made for 3263500100034 . pulse pile-up 3263500100035 . gamma self-absorption in U-235 sample 3263500100036 . geometry 3263500100037 DECAY-DATA The decay data given below were used for calculating 3263500100038 the fission yields. 3263500100039 (40-ZR-95,64.1D,DG,724.2,0.444,DG,756.74,0.546) 3263500100040 (40-ZR-97,17.0HR,DG,743.36,0.945) 3263500100041 (41-NB-95-G,35.15D,DG,765.83,0.998) 3263500100042 (42-MO-99,66.02HR,DG,739.70,0.118) 3263500100043 (44-RU-103,39.35D,DG,497.08,0.868) 3263500100044 (53-I-131,8.06D,DG,364.47,0.821) 3263500100045 (53-I-132-G,2.38HR,DG,954.55,0.177) 3263500100046 (56-BA-140,12.81D,DG,537.30,0.24) 3263500100047 (57-LA-140,40.22HR,DG,1596.49,0.955) 3263500100048 PART-DET (G) 3263500100049 MONITOR Absolute measurement 3263500100050 ERR-ANALYS (ERR-T) Total errors were given. The principal sources 3263500100051 are as follows : 3263500100052 (ERR-1) 1.5% for fission rate error 3263500100053 (ERR-2) 0.2% for error due to pulse pile-up time 3263500100054 correction 3263500100055 (ERR-3) 0.3% for error due to self absorption 3263500100056 correction 3263500100057 (ERR-4,1.,6.) 1-6% for branch ratio error 3263500100058 (ERR-5,1.2,3.5) 1.2-3.5% for efficiency error 3263500100059 (ERR-6) 0.2% for half-life error 3263500100060 and statistical error 3263500100061 STATUS (TABLE) Data taken from Table 5,6 and 7 of J,HFH,vol.2,3263500100062 No.3, p.129,1980. 3263500100063 HISTORY (19951225C) Compiled by Liang Qichang, CNDC. 3263500100064 (20100219A) SD:Updated to new date formats,lower case. 3263500100065 ENDBIB 63 0 3263500100066 COMMON 4 3 3263500100067 ERR-1 ERR-2 ERR-3 ERR-6 3263500100068 PER-CENT PER-CENT PER-CENT PER-CENT 3263500100069 1.5 0.2 0.3 0.2 3263500100070 ENDCOMMON 3 0 3263500100071 ENDSUBENT 70 0 3263500199999 SUBENT 32635002 20100219 31473263500200001 BIB 1 1 3263500200002 REACTION (92-U-235(N,F)ELEM/MASS,CUM,FY,,FIS) 3263500200003 ENDBIB 1 0 3263500200004 COMMON 1 3 3263500200005 EN-MEAN 3263500200006 MEV 3263500200007 1.8 3263500200008 ENDCOMMON 3 0 3263500200009 DATA 4 5 3263500200010 ELEMENT MASS DATA ERR-T 3263500200011 NO-DIM NO-DIM PC/FIS PC/FIS 3263500200012 40. 95. 6.31 0.22 3263500200013 44. 103. 3.66 0.22 3263500200014 53. 131. 4.04 0.26 3263500200015 53. 132. 3.97 0.34 3263500200016 56. 140. 6.34 0.37 3263500200017 ENDDATA 7 0 3263500200018 ENDSUBENT 17 0 3263500299999 SUBENT 32635003 20100219 31473263500300001 BIB 1 1 3263500300002 REACTION (92-U-235(N,F)ELEM/MASS,CUM,FY,,MXW) 3263500300003 ENDBIB 1 0 3263500300004 COMMON 1 3 3263500300005 EN-MEAN 3263500300006 EV 3263500300007 0.0253 3263500300008 ENDCOMMON 3 0 3263500300009 DATA 4 5 3263500300010 ELEMENT MASS DATA ERR-T 3263500300011 NO-DIM NO-DIM PC/FIS PC/FIS 3263500300012 40. 95. 6.37 0.22 3263500300013 44. 103. 3.08 0.19 3263500300014 53. 131. 3.18 0.20 3263500300015 53. 132. 3.55 0.30 3263500300016 56. 140. 6.20 0.39 3263500300017 ENDDATA 7 0 3263500300018 ENDSUBENT 17 0 3263500399999 SUBENT 32635004 20100219 31473263500400001 BIB 2 5 3263500400002 REACTION ((92-U-235(N,F)ELEM/MASS,CUM,FY,,FIS)// 3263500400003 (92-U-235(N,F)ELEM/MASS,CUM,FY,,MXW)) 3263500400004 ANALYSIS The data given in the Table were obtained by using the 3263500400005 powerful gamma spectrum analysis program GSAP developed3263500400006 by Chinese. 3263500400007 ENDBIB 5 0 3263500400008 COMMON 2 3 3263500400009 EN-MEAN-NM EN-MEAN-DN 3263500400010 MEV EV 3263500400011 1.8 0.0253 3263500400012 ENDCOMMON 3 0 3263500400013 DATA 4 7 3263500400014 ELEMENT MASS DATA ERR-T 3263500400015 NO-DIM NO-DIM NO-DIM NO-DIM 3263500400016 40. 95. 1.015 0.035 3263500400017 40. 97. 1.060 0.032 3263500400018 42. 99. 1.080 0.041 3263500400019 44. 103. 1.155 0.031 3263500400020 53. 131. 1.296 0.044 3263500400021 53. 132. 1.197 0.044 3263500400022 56. 140. 0.992 0.026 3263500400023 ENDDATA 9 0 3263500400024 ENDSUBENT 23 0 3263500499999 SUBENT 32635005 20100219 31473263500500001 BIB 2 4 3263500500002 REACTION ((92-U-235(N,F)ELEM/MASS,CUM,FY,,FIS)// 3263500500003 (92-U-235(N,F)ELEM/MASS,CUM,FY,,MXW)) 3263500500004 ANALYSIS The data given in the Table were obtained by using 3263500500005 another gamma spectrum analysis program GOLTON. 3263500500006 ENDBIB 4 0 3263500500007 COMMON 2 3 3263500500008 EN-MEAN-NM EN-MEAN-DN 3263500500009 MEV EV 3263500500010 1.8 0.0253 3263500500011 ENDCOMMON 3 0 3263500500012 DATA 4 5 3263500500013 ELEMENT MASS DATA ERR-T 3263500500014 NO-DIM NO-DIM NO-DIM NO-DIM 3263500500015 40. 95. 0.991 0.028 3263500500016 44. 103. 1.189 0.031 3263500500017 53. 131. 1.272 0.032 3263500500018 53. 132. 1.118 0.036 3263500500019 56. 140. 1.023 0.026 3263500500020 ENDDATA 7 0 3263500500021 ENDSUBENT 20 0 3263500599999 ENDENTRY 5 0 3263599999999