ENTRY 32751 20171018 31813275100000001 SUBENT 32751001 20171018 31813275100100001 BIB 14 37 3275100100002 TITLE Measurement of fission cross-section for the 3275100100003 232Th(n,f)141Ba reaction induced by neutrons around 3275100100004 14 MeV 3275100100005 AUTHOR (Chang-Lin Lan, Shuang-Tong Liu, Tao Lv, Qiang Wang, 3275100100006 Cai-Feng Lai, Zheng-Wei Zhang, Kai-Hong Fang) 3275100100007 INSTITUTE (3CPRLNZ,3CPRNPC) 3275100100008 REFERENCE (J,EPJ/A,52,345,2016) 3275100100009 #doi:10.1140/epja/ 3275100100010 FACILITY (NGEN,3CPRNPC) K-400 intense neutron generator 3275100100011 INC-SOURCE (D-T) An effective deuterium beam energy of 200-250 3275100100012 keV and beam current of 230 uA. The tritium-titanium 3275100100013 Target (T-Ti) was 2.18 mg/cm2 thick. 3275100100014 DETECTOR (HPGE) A coaxial GMX60 HPGE detector with a relative 3275100100015 efficiency of about 68% and an energy resolution of 3275100100016 1.7keV (FWHM) at 1.33 MeV 3275100100017 SAMPLE ThO2 powder of 99.7% purity were pressed into 3275100100018 circular disks with a diameter of 14 mm. The 3275100100019 thickness of sample was about 2 mm. Each sample was 3275100100020 sandwiched between two monitor aluminum (thin Al foil 3275100100021 of 99.99% purity)foils. 3275100100022 METHOD (ACTIV) Irradiation of the samples was lasted about 3275100100023 117 minutes with the neutrons flux yield about 2 E11 3275100100024 n/(4pi*s). The samples were placed at 0, 45, 90 degree 3275100100025 angles relative to the deuterium beam direction and 3275100100026 centered about the T-Ti target at a distance of 35 mm. 3275100100027 MONITOR (13-AL-27(N,A)11-NA-24,,SIG) 3275100100028 DECAY-MON (11-NA-24,14.959HR,DG,1368.6,1.00) 3275100100029 ERR-ANALYS (ERR-T) The total uncertainty. 3275100100030 (ERR-S,0.9,2.) Counting statistics 0.9-2% 3275100100031 (ERR-1) Detector efficiency ~2.5% 3275100100032 (ERR-2) Neutron energy and fluency uncertainties 2.5% 3275100100033 (ERR-3,,0.1) Mass of the samples <0.1% 3275100100034 (ERR-4) Self-absorption of gamma rays 0.5% 3275100100035 (ERR-5,,0.8) The irradiation, cooling and measuring 3275100100036 times <0.8% 3275100100037 STATUS (TABLE) Table 2 of Eur.Phys.J.A52(2016)345 3275100100038 HISTORY (20171018C) Compiled by Lile Liu (CNDC) 3275100100039 ENDBIB 37 0 3275100100040 COMMON 3 3 3275100100041 ERR-1 ERR-2 ERR-4 3275100100042 PER-CENT PER-CENT PER-CENT 3275100100043 2.5 2.5 0.5 3275100100044 ENDCOMMON 3 0 3275100100045 ENDSUBENT 44 0 3275100199999 SUBENT 32751002 20171018 31813275100200001 BIB 2 3 3275100200002 REACTION (90-TH-232(N,F)56-BA-141,(CUM),SIG) 3275100200003 DECAY-DATA (56-BA-141,18.27MIN,DG,190.328,0.46) 3275100200004 DG,343.67,0.1444) 3275100200005 ENDBIB 3 0 3275100200006 NOCOMMON 0 0 3275100200007 DATA 6 3 3275100200008 EN EN-ERR DATA ERR-T MONIT MONIT-ERR 3275100200009 MEV MEV MB MB MB MB 3275100200010 14.1 0.3 12.2 0.4 121.20 0.63275100200011 14.5 0.3 13.0 0.5 115.98 0.53275100200012 14.7 0.3 13.3 0.5 113.37 0.53275100200013 ENDDATA 5 0 3275100200014 ENDSUBENT 13 0 3275100299999 ENDENTRY 2 0 3275199999999