ENTRY 32799 20210129 32003279900000001 SUBENT 32799001 20210129 32003279900100001 BIB 15 49 3279900100002 TITLE Fission cross-section measurement for the 3279900100003 238U(n,f)89Rb reaction induced by D-T neutrons 3279900100004 AUTHOR (Qiang Wang,Yafei Han,Luocheng Yang,Lixin Qin, 3279900100005 Changlin Lan,Kaihong Fang) 3279900100006 INSTITUTE (3CPRLNZ) 3279900100007 (3CPRCPR) Gansu Hechuang Huanbao Technology Co., Ltd, 3279900100008 Lanzhou 3279900100009 REFERENCE (J,NIM/B,469,28,2020) 3279900100010 #doi:10.1016/j.nimb.2020.02.023 3279900100011 FACILITY (NGEN,3CPRNPC) The K-400 intense neutron generator 3279900100012 INC-SOURCE (D-T) The neutron flux was monitored by accompanying 3279900100013 alpha-particle and the neutron energies were 3279900100014 determined by the cross-section ratio of 3279900100015 90Zr(n,2n)89Zr to 93Nb(n,2n)92mNb reaction. 3279900100016 DETECTOR (HPGE) A well calibrated low-background 3279900100017 HPGe-gamma system 3279900100018 SAMPLE The nitrate of uranium oxide (UO2(NO3)2) powder was 3279900100019 pressed into wafers with a diameter of 12 mm and a 3279900100020 thickness of about 1.0 mm. The sample wafer was 3279900100021 sealed with a polyethylene film, and then sandwiched 3279900100022 between two monitor aluminum (99.99% purity, 0.05 mm 3279900100023 thickness) foils and standard niobium and zirconium 3279900100024 (99.99% purity, 0.5 mm thickness) foil. 3279900100025 METHOD (ACTIV) Three samples were placed at 0, 45 and 90 deg 3279900100026 angles relative to the deuteron beam direction and 3279900100027 centered about the T-Ti target at a distance of 4.0 cm,3279900100028 were irradiated for about 110 min. After a short 3279900100029 cooling time (about 4.5 min), the gamma spectrum of 3279900100030 the irradiated sample was recorded every minute 3279900100031 within the measurement time of about 90.0 min. 3279900100032 MONITOR (13-AL-27(N,A)11-NA-24,,SIG) 3279900100033 Qiang Wang (2021-3-3): 3279900100034 The values were obtained by fitting and interpolating 3279900100035 the data of ENDF/B-VII.1 3279900100036 DECAY-MON (11-NA-24,14.997HR,DG,1368.63,0.999936) 3279900100037 MONIT-REF (,M.B.Chadwick+,J,NDS,112,2887,2011) ENDF/B-VII.1 3279900100038 CORRECTION Corrections were made for the neutron-fluctuation 3279900100039 correction, the self-absorption correction factor, 3279900100040 the geometry correction factor, the coincidence sum 3279900100041 effect of cascade gamma-rays and so on. 3279900100042 ERR-ANALYS (ERR-T) The uncertainties mainly come from following 3279900100043 and others were caused by the sample geometry, weight 3279900100044 of samples, the time schedule and neutron energy. 3279900100045 (ERR-S,0.6,1.3) The counting statistics of the 3279900100046 characteristic peak 3279900100047 (ERR-1,1.8,2.5) Detection efficiency 3279900100048 (ERR-2) The self-absorption 3279900100049 (MONIT-ERR) The cross-section of 27Al(n,a)24Na reaction3279900100050 HISTORY (20210129C) Compiled by Lile Liu (CNDC) 3279900100051 ENDBIB 49 0 3279900100052 COMMON 1 3 3279900100053 ERR-2 3279900100054 PER-CENT 3279900100055 0.5 3279900100056 ENDCOMMON 3 0 3279900100057 ENDSUBENT 56 0 3279900199999 SUBENT 32799002 20210129 32003279900200001 BIB 3 4 3279900200002 REACTION (92-U-238(N,F)37-RB-89,CUM,SIG) 3279900200003 DECAY-DATA ((1.)37-RB-89,15.15MIN,DG,1031.92,0.6290) 3279900200004 ((2.)37-RB-89,15.15MIN,DG,1248.14,0.4592) 3279900200005 STATUS (TABLE) Table 2 of Nucl.Instr.Meth.B.469(2020)28 3279900200006 ENDBIB 4 0 3279900200007 NOCOMMON 0 0 3279900200008 DATA 7 6 3279900200009 EN EN-ERR DATA ERR-T DECAY-FLAG MONIT 3279900200010 MONIT-ERR 3279900200011 MEV MEV MB MB NO-DIM MB 3279900200012 MB 3279900200013 14.1 0.3 33.93 2.11 1. 120.73279900200014 2.4 3279900200015 14.1 0.3 32.58 2.04 2. 120.73279900200016 2.4 3279900200017 14.5 0.3 32.90 2.06 1. 116.83279900200018 2.3 3279900200019 14.5 0.3 31.50 1.99 2. 116.83279900200020 2.3 3279900200021 14.7 0.3 32.95 2.09 1. 114.43279900200022 2.3 3279900200023 14.7 0.3 32.32 2.08 2. 114.43279900200024 2.3 3279900200025 ENDDATA 16 0 3279900200026 ENDSUBENT 25 0 3279900299999 SUBENT 32799003 20210129 32003279900300001 BIB 3 6 3279900300002 REACTION (92-U-238(N,F)37-RB-89,CUM,SIG,,AV) 3279900300003 ANALYSIS Simple average value of selected characteristic 3279900300004 gamma-peaks (1031.92 keV and 1248.14 keV) 3279900300005 STATUS (TABLE) Text (p.30) of Nucl.Instr.Meth.B.469(2020)28 3279900300006 (DEP,32799002) Cross sections obtained from two gamma 3279900300007 lines 3279900300008 ENDBIB 6 0 3279900300009 NOCOMMON 0 0 3279900300010 DATA 6 3 3279900300011 EN EN-ERR DATA ERR-T MONIT MONIT-ERR 3279900300012 MEV MEV MB MB MB MB 3279900300013 14.1 0.3 33.2 2.1 120.7 2.43279900300014 14.5 0.3 32.2 2.0 116.8 2.33279900300015 14.7 0.3 32.6 2.1 114.4 2.33279900300016 ENDDATA 5 0 3279900300017 ENDSUBENT 16 0 3279900399999 ENDENTRY 3 0 3279999999999