ENTRY 32750 20180419 31843275000000001 SUBENT 32750001 20180419 31843275000100001 BIB 14 40 3275000100002 TITLE Fission cross section of the 232Th(n,f)131Sb reaction 3275000100003 induced by neutrons around 14 MeV 3275000100004 AUTHOR (Yi Zhang, Tao Lv, Xiaodong Pan, Qiang Wang, 3275000100005 Kaihong Fang, Changlin Lan) 3275000100006 REFERENCE (J,RPC,135,1,2017) 3275000100007 INSTITUTE (3CPRLNZ) 3275000100008 FACILITY (CCW,3CPRNPC) The K-400 Intense Neutron Generator 3275000100009 SAMPLE Two samples (ThO2 powder of 99.5% purity) and monitor 3275000100010 Al (thin Al foil of 99.99% purity) are made into 3275000100011 round disks with a diameter of 2.0 cm; the 3275000100012 thicknesses of samples are around 1.0 mm (THO2) and 3275000100013 0.05 mm (Al). 3275000100014 The samples were placed at 0, 45 and 90 deg. relative 3275000100015 to the deuteron beam direction and centered about the 3275000100016 target at distances of 35 mm. 3275000100017 INC-SOURCE (D-T) A deuteron beam of 220-250 keV and beam current 3275000100018 of 230 uA used. 3275000100019 The solid tritium-titanium target used in the neutron 3275000100020 generator was about 2.18 mg/cm2. 3275000100021 The neutron energies in the measurements are 3275000100022 determined by the cross section ratio of the 3275000100023 90Zr(n,2n)89Zr to 93Nb(n,2n)92mNb reactions. 3275000100024 DETECTOR (HPGE) The relative efficiency is 68%, and the energy 3275000100025 resolution is around 1.7 keV at 1332.5 keV. 3275000100026 PART-DET (A) The neutron flux is about 2x10E11 n/s monitored 3275000100027 by accompanying alpha particle. 3275000100028 MONITOR (13-AL-27(N,A)11-NA-24,,SIG) 3275000100029 MONIT-REF (,M.B.Chadwick+,J,NDS,112,2887,2011) 3275000100030 Evaluated data in ENDF/B-VII.1 3275000100031 ERR-ANALYS (DATA-ERR) The uncertainties mainly come from the 3275000100032 detection efficiency calibration and the counting 3275000100033 statistics of characteristic gamma-ray peaks. 3275000100034 CORRECTION Corrections are made for contributions form 3275000100035 background neutrons, gamma-ray self-absorption in the 3275000100036 sample, gamma-ray coincidence summing effects, pile 3275000100037 up and coincidence losses of cascade gamma-rays, 3275000100038 fluctuation of the neutron flux during the 3275000100039 irradiation and the sample geometry. 3275000100040 HISTORY (20170401C) Compiled by Guochang Chen (CNDC) 3275000100041 (20180419U) On. REFERENCE: IPC -> RPC 3275000100042 ENDBIB 40 0 3275000100043 NOCOMMON 0 0 3275000100044 ENDSUBENT 43 0 3275000199999 SUBENT 32750002 20170401 31793275000200001 BIB 3 5 3275000200002 REACTION (90-TH-232(N,F)51-SB-131,,SIG) 3275000200003 DECAY-DATA (51-SB-131,22.3MIN,DG,943.41,0.471) 3275000200004 (11-NA-24,14.951HR,DG,1368.63,1.) 3275000200005 STATUS (TABLE) Data taken from Table 2 in page 2 of 3275000200006 J,IPC,135,1,2017. 3275000200007 ENDBIB 5 0 3275000200008 NOCOMMON 0 0 3275000200009 DATA 6 3 3275000200010 EN EN-RSL DATA DATA-ERR MONIT MONIT-ERR 3275000200011 MEV MEV MB MB MB MB 3275000200012 14.1 0.3 6.27 0.47 121.20 0.63275000200013 14.5 0.3 6.19 0.54 115.98 0.53275000200014 14.8 0.3 6.00 0.51 112.07 0.53275000200015 ENDDATA 5 0 3275000200016 ENDSUBENT 15 0 3275000299999 ENDENTRY 2 0 3275099999999