ENTRY 23262 20150601 22442326200000001 SUBENT 23262001 20150601 22442326200100001 BIB 16 51 2326200100002 TITLE Measurements of Neutron Capture Cross Sections of 112Sn2326200100003 and 118Sn with J-PARC/MLF/ANNRI . 2326200100004 AUTHOR (A.Kimura,K.Hirose,S.Nakamura,H.Harada,K.Y.Hara,J.Hori,2326200100005 M.Igashira,T.Kamiyama,T.Katabuchi,K.Kino,F.Kitatani, 2326200100006 Y.Kiyanagi,M.Koizumi,M.Mizumoto,Y.Toh) 2326200100007 INSTITUTE (2JPNJAE) A.Kimura,K.Hirose,S.Nakamura,H.Harada, 2326200100008 K.Y.Hara,F.Kitatani,M.Koizumi,Y.Toh1 2326200100009 (2JPNKTO) J.Hori 2326200100010 (2JPNTIT) M.Igashira,T.Katabuchi,M.Mizumoto 2326200100011 (2JPNHOK) T.Kamiyama,K.Kino,Y.Kiyanagi 2326200100012 REFERENCE (J,NDS,119,150,2014) Prelim.data. 2326200100013 #doi:10.1016/j.nds.2014.08.042 2326200100014 REL-REF (I,,A.Kimura+,J,NST,49,708,2012) 2326200100015 FACILITY (SYNCH,2JPNJAE) 2326200100016 Accurate Neutron-Nucleus Reaction measurement 2326200100017 Instrument (ANNRI) of Materials and Life science 2326200100018 experimental Facility (MLF) in Japan Proton Accelerator2326200100019 Research Complex (J-PARC). 2326200100020 J-PARC was operated at a repetition rate 25 Hz, a power2326200100021 210 kW, in the 'double-bunch mode' - each proton pulse 2326200100022 consists of two bunches of 100ns width each at interval2326200100023 of 600 ns. 2326200100024 INC-SOURCE (SPALL) 2326200100025 INC-SPECT The energy-integrated neutron intensities were 2326200100026 9.1E+10 n/s/m2 in the neutron energy range 1.5 -25 meV 2326200100027 and 1.2E+10 n/s/m2 at 0.9 - 1.1 keV under a proton 2326200100028 beam power of 210 kW . 2326200100029 The neutron spectrum was measured by detecting the 2326200100030 478keV gamma rays from B-10(n,alpha+gamma)7Li reaction.2326200100031 SAMPLE Metallic tin samples of 5mm diameter . 2326200100032 Background was measured without sample and with Pb-208 2326200100033 sample of 5 mm diameter, 159.7 mg weight, isotopic 2326200100034 enrichment 99.60 mole%. 2326200100035 METHOD (TOF) The total measuring time was about 38 hr for the 2326200100036 Sn-112 and Sn-118 samples, about 23 hr for the empty 2326200100037 sample and 17 hr for the Pb-208 sample. 2326200100038 PART-DET (G) Energies of observed gamma-rays are in Table I 2326200100039 of J,NDS,119,150,2014 . 2326200100040 DETECTOR (GE) The array of Ge detectors is composed of 22 Ge 2326200100041 crystals and located on the flight length of 21.5 m 2326200100042 ERR-ANALYS Uncertainty in the correction factors of the 2326200100043 self-shielding - 5%. 2326200100044 CORRECTION For dead-time. 2326200100045 For backgrounds - frame-overlap; due to scattered 2326200100046 neutrons. The backgrounds were normalized with the 2326200100047 areas of the 7724-keV gamma peaks from 27Al(n,gamma) 2326200100048 reaction. 2326200100049 For self-shielding of the samples. 2326200100050 For contributions of impurities. 2326200100051 COMMENT This work was supported by JSPS KAKENHI (22226016). 2326200100052 HISTORY (20150601C) M.M. 2326200100053 ENDBIB 51 0 2326200100054 NOCOMMON 0 0 2326200100055 ENDSUBENT 54 0 2326200199999 SUBENT 23262002 20150601 22442326200200001 BIB 7 16 2326200200002 REACTION (50-SN-112(N,0),,EN) 2326200200003 SAMPLE Sn-112 : 97.3mg, isotopic enrichment 99.65 mole% with 2326200200004 0.3 mole% and 0.05 mole% isotopic contaminations of 2326200200005 Sn-114 and Sn-115,respectively. 2326200200006 ANALYSIS Resonance energies were defined by measured point-wise 2326200200007 neutron-capture cross-section normalized by the thermal2326200200008 cross-section measured by K.S.Krane+. 2326200200009 Resonances 21.02, 40.38, 166. keV were not observed. 2326200200010 REL-REF (R,,K.S.Krane+,J,PR/C,73,054312,2006) 2326200200011 ERR-ANALYS (DATA-ERR) Not specified. 2326200200012 FLAG (1.) The gamma rays were not observed clearly, because 2326200200013 the number of the events was not enough. 2326200200014 (2.) The gamma rays were observed clearly, but the 2326200200015 resonances were overlapped each other. 2326200200016 STATUS (TABLE) Table II of J,NDS,119,150,2014 2326200200017 (PRELM) Preliminary result. 2326200200018 ENDBIB 16 0 2326200200019 NOCOMMON 0 0 2326200200020 DATA 3 24 2326200200021 DATA DATA-ERR FLAG 2326200200022 EV EV NO-DIM 2326200200023 64.61 0.06 2326200200024 72.24 0.08 2326200200025 94.76 0.11 2326200200026 104.65 0.12 2326200200027 236.6 0.3 2326200200028 252.9 0.4 2326200200029 514.0 0.9 2326200200030 577.3 1.1 2326200200031 679.7 1.3 1. 2326200200032 715.6 1.4 2326200200033 771.3 1.6 2326200200034 809.2 1.7 2326200200035 879.3 1.9 2326200200036 903.3 2.0 1. 2326200200037 1086.0 2.5 2326200200038 1156.0 2.8 2326200200039 1321. 3. 2326200200040 1419. 4. 2326200200041 1511. 4. 2. 2326200200042 1539. 4. 2. 2326200200043 1639. 5. 2326200200044 1687. 5. 1. 2326200200045 1824. 5. 2326200200046 1982. 6. 2326200200047 ENDDATA 26 0 2326200200048 ENDSUBENT 47 0 2326200299999 SUBENT 23262003 20150601 22442326200300001 BIB 5 11 2326200300002 REACTION (50-SN-118(N,0),,EN) 2326200300003 SAMPLE Sn-118 : 87.3mg, isotopic enrichment 99.60 mole% with 2326200300004 0.35 mole% and 0.05 mole% isotopic contaminations of 2326200300005 Sn-117 and Sn-119,respectively. 2326200300006 ANALYSIS Resonance energies were defined by measured point-wise 2326200300007 neutron-capture cross-section normalized by the 2326200300008 evaluated value of JENDL-4.0 at 47.05-eV resonance. 2326200300009 Resonance 289.keV was not observed. 2326200300010 ERR-ANALYS (DATA-ERR) Not specified. 2326200300011 STATUS (TABLE) Table II of J,NDS,119,150,2014 2326200300012 (PRELM) Preliminary result. 2326200300013 ENDBIB 11 0 2326200300014 NOCOMMON 0 0 2326200300015 DATA 2 13 2326200300016 DATA DATA-ERR 2326200300017 EV EV 2326200300018 45.75 0.05 2326200300019 307.5 0.5 2326200300020 344.3 0.5 2326200300021 358.7 0.7 2326200300022 770.6 1.6 2326200300023 791.7 1.6 2326200300024 1267. 3. 2326200300025 1360. 4. 2326200300026 1397. 4. 2326200300027 1583. 4. 2326200300028 1717. 4. 2326200300029 2034. 6. 2326200300030 2233. 7. 2326200300031 ENDDATA 15 0 2326200300032 ENDSUBENT 31 0 2326200399999 ENDENTRY 3 0 2326299999999