ENTRY 31676 20210512 32003167600000001 SUBENT 31676001 20210512 32003167600100001 BIB 14 49 3167600100002 TITLE Some cross sections of bromine isotopes induced by 3167600100003 14 MeV neutrons 3167600100004 AUTHOR (Liangyong Zhao, Changlin Lan, Kaihong Fang, 3167600100005 Xiaosan Xu, Xiangzhong Kong, Rong Liu, Li Jiang) 3167600100006 INSTITUTE (3CPRLNZ,3CPRNPC) 3167600100007 REFERENCE (J,ANE,36,874,2009) 3167600100008 FACILITY (CYCLO,3CPRNPC) K-400 Intense Neutron Generator 3167600100009 INC-SOURCE (D-T) 220 KeV deuteron beam and the average beam 3167600100010 current is 350 uA. 3167600100011 The solid T-Ti target used was 2.18 mg/cm2 in thick. 3167600100012 The neutron flux was monitored by a uranium fission 3167600100013 chamber. 3167600100014 SAMPLE High-purity NaBr (99.9%) of natural Bromine isotopes 3167600100015 pressed into 20 mm diameter and 4.78-10.78 mm thick 3167600100016 slices. 3167600100017 Each NaBr sample was sandwiched between two Nb foils 3167600100018 (the thickness of each Nb foil: less than 0.20 mm), 3167600100019 and the purity of the Nb foils was better than 3167600100020 99.99%. 3167600100021 One Nb foil and one Zr foil had been put together as 3167600100022 a group and used to determine the neutron energy in 3167600100023 the experiment. 3167600100024 MONITOR (41-NB-93(N,2N)41-NB-92-M,,SIG) 3167600100025 METHOD (ACTIV) Irradiations lasted from 0.5 to 1 h with a 3167600100026 yield of about 3-4 x 10**10 n/s. 3167600100027 MONIT-REF (,V.E.Lewis+,J,NIM,174,141,1980) 3167600100028 DETECTOR (HPGE) Coaxial HPGe detector low background gamma-ray 3167600100029 spectroscopy (ORTEC,model GEM 60P, diam.:70.1 mm, 3167600100030 length:72.3 mm) with a elative efficiency of ~68% and 3167600100031 an energy resolution of ~1.69 keV FWHM at 1.33 MeV 3167600100032 for 60Co. 3167600100033 The detection efficiency was calibrated beforehand 3167600100034 using various standard gamma sources. 3167600100035 The uncertainty in the absolute efficiency curve at 3167600100036 9.5 cm was estimated to be ~2%, and the uncertainty 3167600100037 of the activity of the standard sources was ~1%. 3167600100038 STATUS (TABLE) Table 2 of Ann.Nucl.Energy 36(2009)874 3167600100039 ERR-ANALYS (ERR-T) The main uncertainties result from: 3167600100040 (ERR-S,1.,9.) the counting statistics (1.0-9.0%) 3167600100041 (ERR-1) detection efficiency (2.0%) 3167600100042 (ERR-2) standard cross section (1.0%) 3167600100043 (ERR-3) weight of samples (0.1%) 3167600100044 (ERR-4) neutron energy (2.5%) 3167600100045 (ERR-5,0.5,2.) gamma-ray self-absorption (0.5-2.0%) 3167600100046 (ERR-6,0.,5.) coincidence sum correction (0-5%) 3167600100047 (ERR-7,0.1,1.) irradiation, cooling, and measuring 3167600100048 times (0.1-1.0%) 3167600100049 HISTORY (20090531C) SD 3167600100050 (20210512U) On. FACILITY revised. METHOD added. 3167600100051 ENDBIB 49 0 3167600100052 COMMON 4 3 3167600100053 ERR-1 ERR-2 ERR-3 ERR-4 3167600100054 PER-CENT PER-CENT PER-CENT PER-CENT 3167600100055 2.0 1.0 0.1 2.5 3167600100056 ENDCOMMON 3 0 3167600100057 ENDSUBENT 56 0 3167600199999 SUBENT 31676002 20090531 31383167600200001 BIB 3 3 3167600200002 REACTION (35-BR-79(N,2N)35-BR-78,,SIG) 3167600200003 SAMPLE 78Br with abundance 50.69+-0.07% 3167600200004 DECAY-DATA (35-BR-78,6.46MIN,DG,613.68,0.136) 3167600200005 ENDBIB 3 0 3167600200006 COMMON 1 3 3167600200007 EN-ERR 3167600200008 MEV 3167600200009 0.3 3167600200010 ENDCOMMON 3 0 3167600200011 DATA 3 2 3167600200012 EN DATA ERR-T 3167600200013 MEV MB MB 3167600200014 13.5 710. 45. 3167600200015 14.6 912. 91. 3167600200016 ENDDATA 4 0 3167600200017 ENDSUBENT 16 0 3167600299999 SUBENT 31676003 20090531 31383167600300001 BIB 3 3 3167600300002 REACTION (35-BR-81(N,2N)35-BR-80-M,,SIG) 3167600300003 SAMPLE 81Br with abundance 49.31+-0.07% 3167600300004 DECAY-DATA (35-BR-80-M,4.4205HR,DG,37.052,0.391) 3167600300005 ENDBIB 3 0 3167600300006 NOCOMMON 0 0 3167600300007 DATA 4 3 3167600300008 EN EN-ERR DATA ERR-T 3167600300009 MEV MEV MB MB 3167600300010 13.5 0.3 600. 52. 3167600300011 14.1 0.2 735. 48. 3167600300012 14.6 0.3 763. 57. 3167600300013 ENDDATA 5 0 3167600300014 ENDSUBENT 13 0 3167600399999 SUBENT 31676004 20090531 31383167600400001 BIB 3 3 3167600400002 REACTION (35-BR-81(N,2N)35-BR-80-G,,SIG) 3167600400003 SAMPLE 81Br with abundance 49.31+-0.07% 3167600400004 DECAY-DATA (35-BR-80-G,17.68MIN,DG,616.3,0.067) 3167600400005 ENDBIB 3 0 3167600400006 NOCOMMON 0 0 3167600400007 DATA 4 2 3167600400008 EN EN-ERR DATA ERR-T 3167600400009 MEV MEV MB MB 3167600400010 13.5 0.3 413. 52. 3167600400011 14.1 0.2 381. 43. 3167600400012 ENDDATA 4 0 3167600400013 ENDSUBENT 12 0 3167600499999 SUBENT 31676005 20090531 31383167600500001 BIB 3 3 3167600500002 REACTION (35-BR-81(N,P)34-SE-81-M,,SIG) 3167600500003 SAMPLE 81Br with abundance 49.31+-0.07% 3167600500004 DECAY-DATA (34-SE-81-M,57.28MIN,DG,103.01,0.130) 3167600500005 ENDBIB 3 0 3167600500006 NOCOMMON 0 0 3167600500007 DATA 4 2 3167600500008 EN EN-ERR DATA ERR-T 3167600500009 MEV MEV MB MB 3167600500010 13.5 0.3 8.2 1.2 3167600500011 14.1 0.2 8.55 1.0 3167600500012 ENDDATA 4 0 3167600500013 ENDSUBENT 12 0 3167600599999 SUBENT 31676006 20090531 31383167600600001 BIB 3 3 3167600600002 REACTION (35-BR-81(N,P)34-SE-81-G,,SIG) 3167600600003 SAMPLE 81Br with abundance 49.31+-0.07% 3167600600004 DECAY-DATA (34-SE-81-G,18.45MIN,DG,828.27,0.0028) 3167600600005 ENDBIB 3 0 3167600600006 NOCOMMON 0 0 3167600600007 DATA 4 2 3167600600008 EN EN-ERR DATA ERR-T 3167600600009 MEV MEV MB MB 3167600600010 13.5 0.3 11.5 1.2 3167600600011 14.1 0.2 13.9 1.5 3167600600012 ENDDATA 4 0 3167600600013 ENDSUBENT 12 0 3167600699999 SUBENT 31676007 20090531 31383167600700001 BIB 3 3 3167600700002 REACTION (35-BR-81(N,A)33-AS-78,,SIG) 3167600700003 SAMPLE 81Br with abundance 49.31+-0.07% 3167600700004 DECAY-DATA (33-AS-78,90.7MIN,DG,694.9,0.167) 3167600700005 ENDBIB 3 0 3167600700006 NOCOMMON 0 0 3167600700007 DATA 4 2 3167600700008 EN EN-ERR DATA ERR-T 3167600700009 MEV MEV MB MB 3167600700010 13.5 0.3 4.22 0.81 3167600700011 14.1 0.2 4.02 1.04 3167600700012 ENDDATA 4 0 3167600700013 ENDSUBENT 12 0 3167600799999 ENDENTRY 7 0 3167699999999