ENTRY 32766 20181121 31873276600000001 SUBENT 32766001 20181121 31873276600100001 BIB 11 31 3276600100002 TITLE Measurement of neutron-induced fission cross section 3276600100003 of 238U at 14 MeV 3276600100004 AUTHOR (Hu Zhongkang, Qi Bujia, Li Anli, Zhang Baisheng, 3276600100005 Zhou Huiming, Dong Mingli) 3276600100006 INSTITUTE (3CPRAEP) 3276600100007 REFERENCE (J,CST,14,201,1980) 3276600100008 FACILITY (CCW,3CPRAEP) 3276600100009 INC-SOURCE (D-T) 0.7 mg/cm2 thick TiT for 150 & 200 keV 3276600100010 deuterons at 45 & 90 deg. 0.24 mg/cm2 thick TiT for 3276600100011 220 keV deutrons at 0 deg. 3276600100012 SAMPLE Natural U foils (898 ug and 899 ug) electrodeposited 3276600100013 on Pt foil (0.1 mm thick). 3276600100014 The masses of U foils were determined by weighing, 3276600100015 coulometry, and alpha spectrometry. 3276600100016 DETECTOR (FISCH) Ar (95%)+ CO2(5%) at 500 mmHg 3276600100017 (SOLST) Detection of associated alpha particles at 3276600100018 90 deg. 3276600100019 METHOD (ASSOP) Detection of alpha from T(d,n)4He 3276600100020 CORRECTION Corrected for 3276600100021 - Anisotropic emission of associated alpha in 3276600100022 lab system 3276600100023 - Subthreshold fission number (2%) 3276600100024 - Materials between TiT target and U sample (1.6%) 3276600100025 - Central position of U foil 3276600100026 - The sum (3%) of D(d,n)3He neutron contribution (<1%)3276600100027 and scattered neutrons 3276600100028 - Self-absorption of fission fragment 3276600100029 - Alpha originated from 3He(d,p)4He with 3He decayed 3276600100030 from T (0.2% at 14.10 MeV, 0.4% at 14.60 MeV, 3276600100031 1.8% at 15.04 MeV) 3276600100032 HISTORY (20181121C) Wang Jimin (CNDC) + Otuka Naohiko (NDS) 3276600100033 ENDBIB 31 0 3276600100034 NOCOMMON 0 0 3276600100035 ENDSUBENT 34 0 3276600199999 SUBENT 32766002 20181121 31873276600200001 BIB 3 17 3276600200002 REACTION (92-U-238(N,F),,SIG) 3276600200003 ERR-ANALYS (ERR-T) Total uncertainty 3276600200004 (ERR-1) Solid angle of alpha detector (1.1%) 3276600200005 (ERR-2) Background of alpha detection (0.3%) 3276600200006 (ERR-3) Direction of alpha emission (0.5%) 3276600200007 (ERR-4) Effect of material between 3276600200008 TiT target and U sample (0.8%) 3276600200009 (ERR-5) U sample mass (0.8%) 3276600200010 (ERR-6) Distance between TiT target 3276600200011 and U sample (1.2%) 3276600200012 (ERR-7) Extrapolation of fission 3276600200013 fragment spectrum (0.7%) 3276600200014 (ERR-8) Background subtraction (0.6%) 3276600200015 (ERR-S) Statistics deviation (0.5%) 3276600200016 (ERR-9) 3He(d,p)4He contribution 3276600200017 (1% at 15.04 MeV, <0.4% at 14.10 and 14.60 MeV)3276600200018 STATUS (TABLE) Table 2 of Atom.Energy Sci.Tech.14(1980)201 3276600200019 ENDBIB 17 0 3276600200020 COMMON 9 6 3276600200021 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 3276600200022 ERR-7 ERR-8 ERR-S 3276600200023 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 3276600200024 PER-CENT PER-CENT PER-CENT 3276600200025 1.1 0.3 0.5 0.8 0.8 1.23276600200026 0.7 0.6 0.5 3276600200027 ENDCOMMON 6 0 3276600200028 DATA 5 3 3276600200029 EN EN-RSL-HW DATA ERR-T ERR-9 3276600200030 MEV MEV B B PER-CENT 3276600200031 14.10 0.10 1.14 0.03 3276600200032 14.60 0.20 1.21 0.03 3276600200033 15.04 0.13 1.26 0.03 1. 3276600200034 ENDDATA 5 0 3276600200035 ENDSUBENT 34 0 3276600299999 ENDENTRY 2 0 3276699999999