ENTRY 33135 20200716 31973313500000001 SUBENT 33135001 20200716 31973313500100001 BIB 9 28 3313500100002 TITLE Measurement of prompt fission neutron and gamma 3313500100003 spectra in the fast neutron induced fission of 232Th 3313500100004 AUTHOR (S.De, G.Mishra, R.G.Thomas, A.Kumar, A.Mitra, 3313500100005 B.K.Nayak) 3313500100006 INSTITUTE (3INDTRM) 3313500100007 (3INDIND) Homi Bhabha National Institute, Mumbai 3313500100008 REFERENCE (J,EPJ/A,56,116,2020) 3313500100009 FACILITY (VDGT,3INDTRM) Folded Tandem Ion Accelerator (FOTIA) 3313500100010 facility 3313500100011 DETECTOR (IOCH) A double sided ionization chamber contains a 3313500100012 cathode and an anode made of copper plated G-10 discs 3313500100013 of diameter 7.0 cm each, were separated from each 3313500100014 other by 2.0 mm Teflon spacer rings used to generate 3313500100015 fission trigger. 3313500100016 The fission fragments produced in the 232Th(n,f) 3313500100017 reaction are detected in the fission chamber covering a3313500100018 solid angle of nearly 4pi. 3313500100019 The generated electron-ion pairs give rise to an 3313500100020 electrical signal, which is used as a start pulse for 3313500100021 the time-of-flight measurement. 3313500100022 METHOD (TOF,PSD) 3313500100023 (COINC) The prompt neutrons emitted in coincidence 3313500100024 with the fission fragments were measured. 3313500100025 The coincidence time resolution (FWHM) is estimated to 3313500100026 be ~ 6 ns 3313500100027 INC-SOURCE (P-LI7) A natural lithium metallic target of thickness 3313500100028 4.0 mg/cm2. 3313500100029 HISTORY (20200716C) VT 3313500100030 ENDBIB 28 0 3313500100031 COMMON 2 3 3313500100032 EN EN-RSL-HW 3313500100033 MEV KEV 3313500100034 2.6 150. 3313500100035 ENDCOMMON 3 0 3313500100036 ENDSUBENT 35 0 3313500199999 SUBENT 33135002 20200716 31973313500200001 BIB 5 12 3313500200002 REACTION (90-TH-232(N,F),PR,NU/DE,,REL) 3313500200003 SAMPLE Two 1.0 cm X 1.0 cm foils of 232Th of thickness 3313500200004 ~ 2.0 mg/cm2 3313500200005 DETECTOR (SCIN) A neutron detectors EJ301 liquid scintillator 3313500200006 detectors (12.7 cm diameter and 5.0 cm thick) were 3313500200007 placed at a distance of about 1.0 m from the ionization3313500200008 chamber and at angle of 55 and 60 degree with respect 3313500200009 to the beam direction. 3313500200010 The detector efficiency and response function were 3313500200011 determined by GEANT4. 3313500200012 ERR-ANALYS (ERR-S) Counting statistics 3313500200013 STATUS (TABLE) Fig.6 of Eur. Phys. J. A 56 (2020) 116 3313500200014 ENDBIB 12 0 3313500200015 NOCOMMON 0 0 3313500200016 DATA 3 14 3313500200017 E DATA ERR-S 3313500200018 MEV ARB-UNITS ARB-UNITS 3313500200019 0.75 346. 18.61 3313500200020 1.25 418. 20.43 3313500200021 1.75 364. 19.07 3313500200022 2.25 310. 17.61 3313500200023 2.75 149. 12.21 3313500200024 3.25 111. 10.52 3313500200025 3.75 78. 8.84 3313500200026 4.25 37. 6.05 3313500200027 4.75 72. 8.49 3313500200028 5.25 22. 4.74 3313500200029 5.75 10. 3.17 3313500200030 6.25 24. 4.94 3313500200031 6.75 33. 5.76 3313500200032 7.25 15. 3.91 3313500200033 ENDDATA 16 0 3313500200034 ENDSUBENT 33 0 3313500299999 SUBENT 33135003 20200716 31973313500300001 BIB 3 8 3313500300002 REACTION (98-CF-252(0,F)0-G-0,PR,FY/DE) 3313500300003 DETECTOR (SCIN) The prompt fission gamma-rays were measured by 3313500300004 two 38.1 mm X 38.1 mm cylindrical CeBr3 detectors. 3313500300005 The detector, optically coupled with Hamamatsu 50.8 mm 3313500300006 type R6231-100 photomultiplier tube placed at distances3313500300007 of 24 cm and 26 cm from the ionization chamber. 3313500300008 The detector response function was determined by GEANT43313500300009 STATUS (TABLE) Fig.10 of Eur. Phys. J. A 56 (2020) 116 3313500300010 ENDBIB 8 0 3313500300011 NOCOMMON 0 0 3313500300012 DATA 2 127 3313500300013 E DATA 3313500300014 MEV PT/FIS/MEV 3313500300015 0.1 1.58797 3313500300016 0.14 13.2149 3313500300017 0.18 14.5361 3313500300018 0.22 12.3345 3313500300019 0.26 10.0723 3313500300020 0.3 8.955 3313500300021 0.34 10.1377 3313500300022 0.38 8.7096 3313500300023 0.42 7.7929 3313500300024 0.46 7.60383 3313500300025 0.5 8.62647 3313500300026 0.54 6.7246 3313500300027 0.58 7.4385 3313500300028 0.62 6.2633 3313500300029 0.66 5.29213 3313500300030 0.7 5.1313 3313500300031 0.74 4.53953 3313500300032 0.78 3.9981 3313500300033 0.82 4.14673 3313500300034 0.86 3.66803 3313500300035 0.9 2.52017 3313500300036 0.94 2.10989 3313500300037 0.98 2.27785 3313500300038 1.02 2.19062 3313500300039 1.06 1.59553 3313500300040 1.1 1.76116 3313500300041 1.14 1.93253 3313500300042 1.18 1.85402 3313500300043 1.22 1.63808 3313500300044 1.26 1.67029 3313500300045 1.3 1.55743 3313500300046 1.34 1.34664 3313500300047 1.38 0.98932 3313500300048 1.42 1.34812 3313500300049 1.46 1.27041 3313500300050 1.5 1.01718 3313500300051 1.54 0.78666 3313500300052 1.58 1.03731 3313500300053 1.62 1.03581 3313500300054 1.66 1.01139 3313500300055 1.7 0.77822 3313500300056 1.74 1.07353 3313500300057 1.78 0.71571 3313500300058 1.82 0.82517 3313500300059 1.86 0.80993 3313500300060 1.9 0.55207 3313500300061 1.94 1.18977 3313500300062 1.98 0.46623 3313500300063 2.02 0.7637 3313500300064 2.06 0.28318 3313500300065 2.1 0.59683 3313500300066 2.14 0.57657 3313500300067 2.18 0.33603 3313500300068 2.22 0.73552 3313500300069 2.26 0.21126 3313500300070 2.3 0.85958 3313500300071 2.34 0.57955 3313500300072 2.38 0.46869 3313500300073 2.42 0.51999 3313500300074 2.46 0.23846 3313500300075 2.5 0.8036 3313500300076 2.54 0.17108 3313500300077 2.58 0.7207 3313500300078 2.62 0.38358 3313500300079 2.66 0.45975 3313500300080 2.7 0.25031 3313500300081 2.74 0.36985 3313500300082 2.78 0.38212 3313500300083 2.82 0.05817 3313500300084 2.86 0.25285 3313500300085 2.9 0.28939 3313500300086 2.94 0.22835 3313500300087 2.98 0.23588 3313500300088 3.02 0.18528 3313500300089 3.06 0.36888 3313500300090 3.1 0.22358 3313500300091 3.14 0.1837 3313500300092 3.18 0.12324 3313500300093 3.22 0.08401 3313500300094 3.26 0.29956 3313500300095 3.3 0.27607 3313500300096 3.34 0.27222 3313500300097 3.38 0.06926 3313500300098 3.42 0.04011 3313500300099 3.46 0.20891 3313500300100 3.5 0.12818 3313500300101 3.54 0.13302 3313500300102 3.58 0.06551 3313500300103 3.62 0.03389 3313500300104 3.66 0.15127 3313500300105 3.7 0.10782 3313500300106 3.74 0.08573 3313500300107 3.78 0.07484 3313500300108 3.82 0.13117 3313500300109 3.86 0.10895 3313500300110 3.9 0.21104 3313500300111 3.94 0.10018 3313500300112 3.98 0.0707 3313500300113 4.02 0.07283 3313500300114 4.06 0.01795 3313500300115 4.1 0.00528 3313500300116 4.14 0.04287 3313500300117 4.18 0.14161 3313500300118 4.22 0.1125 3313500300119 4.26 0.05714 3313500300120 4.3 0.01348 3313500300121 4.34 0.0781 3313500300122 4.38 0.02458 3313500300123 4.42 0.06992 3313500300124 4.46 0.03179 3313500300125 4.5 0.00341 3313500300126 4.54 0.01402 3313500300127 4.58 0.1114 3313500300128 4.62 0.04478 3313500300129 4.66 0.02996 3313500300130 4.7 0.0067 3313500300131 4.74 0.0183 3313500300132 4.78 0.04091 3313500300133 4.82 0.01419 3313500300134 4.86 0.0313 3313500300135 4.9 0.0154 3313500300136 4.94 0.06696 3313500300137 4.98 0.04333 3313500300138 5.02 0.01584 3313500300139 5.06 0.00454 3313500300140 5.1 0.01731 3313500300141 5.14 0.00295 3313500300142 ENDDATA 129 0 3313500300143 ENDSUBENT 142 0 3313500399999 SUBENT 33135004 20200716 31973313500400001 BIB 4 10 3313500400002 REACTION (90-TH-232(N,F)0-G-0,PR,FY/DE) 3313500400003 SAMPLE Two 1.0 cm X 1.0 cm foils of 232Th of thickness 3313500400004 ~ 2.0 mg/cm2 3313500400005 DETECTOR (SCIN) The prompt fission gamma-rays were measured by 3313500400006 two 38.1 mm X 38.1 mm cylindrical CeBr3 detectors. 3313500400007 The detector, optically coupled with Hamamatsu 50.8 mm 3313500400008 type R6231-100 photomultiplier tube placed at distances3313500400009 of 24 cm and 26 cm from the ionization chamber. 3313500400010 The detector response function was determined by GEANT43313500400011 STATUS (TABLE) Fig.13 of Eur. Phys. J. A 56 (2020) 116 3313500400012 ENDBIB 10 0 3313500400013 NOCOMMON 0 0 3313500400014 DATA 2 53 3313500400015 E DATA 3313500400016 MEV PT/FIS/MEV 3313500400017 0.05 4.10692 3313500400018 0.15 6.46926 3313500400019 0.25 5.77491 3313500400020 0.35 5.38535 3313500400021 0.45 4.38676 3313500400022 0.55 3.114 3313500400023 0.65 4.00694 3313500400024 0.75 4.30758 3313500400025 0.85 3.37109 3313500400026 0.95 3.13875 3313500400027 1.05 3.04091 3313500400028 1.15 2.51675 3313500400029 1.25 1.71388 3313500400030 1.35 1.48639 3313500400031 1.45 1.48049 3313500400032 1.55 1.33288 3313500400033 1.65 1.37529 3313500400034 1.75 0.62199 3313500400035 1.85 1.30812 3313500400036 1.95 0.63927 3313500400037 2.05 0.46969 3313500400038 2.15 0.73608 3313500400039 2.25 0.94663 3313500400040 2.35 0.34337 3313500400041 2.45 0.40536 3313500400042 2.55 0.30171 3313500400043 2.65 0.12352 3313500400044 2.75 0.07762 3313500400045 2.85 0.07467 3313500400046 2.95 0.02432 3313500400047 3.05 0.0303 3313500400048 3.15 0.03818 3313500400049 3.25 0.28223 3313500400050 3.35 0.00937 3313500400051 3.45 0.26072 3313500400052 3.55 0.09716 3313500400053 3.65 0.03715 3313500400054 3.75 0.10424 3313500400055 3.85 0.12431 3313500400056 3.95 0.14056 3313500400057 4.05 0.0428 3313500400058 4.15 0.29033 3313500400059 4.25 0.19418 3313500400060 4.35 0.01502 3313500400061 4.45 0.17698 3313500400062 4.55 0.14398 3313500400063 4.65 0.00705 3313500400064 4.75 0.0277 3313500400065 4.85 0.0124 3313500400066 4.95 0.01026 3313500400067 5.05 0.05157 3313500400068 5.15 0.05881 3313500400069 5.25 0.13613 3313500400070 ENDDATA 55 0 3313500400071 ENDSUBENT 70 0 3313500499999 SUBENT 33135005 20200717 31973313500500001 BIB 3 3 3313500500002 REACTION (90-TH-232(N,F)0-NN-1,PR,KEM) 3313500500003 ERR-ANALYS (DATA-ERR) No information on the source of uncertainty 3313500500004 STATUS (TABLE) Table 1 of Eur. Phys. J. A 56 (2020) 116 3313500500005 ENDBIB 3 0 3313500500006 NOCOMMON 0 0 3313500500007 DATA 2 1 3313500500008 DATA DATA-ERR 3313500500009 MEV MEV 3313500500010 1.22 0.03 3313500500011 ENDDATA 3 0 3313500500012 ENDSUBENT 11 0 3313500599999 SUBENT 33135006 20200717 31973313500600001 BIB 4 4 3313500600002 REACTION (90-TH-232(N,F),PR,NU) 3313500600003 MONITOR (98-CF-252(0,F),PR,NU) 3313500600004 ERR-ANALYS (DATA-ERR) No information on the source of uncertainty 3313500600005 STATUS (TABLE) Table 1 of Eur. Phys. J. A 56 (2020) 116 3313500600006 ENDBIB 4 0 3313500600007 NOCOMMON 0 0 3313500600008 DATA 4 1 3313500600009 DATA DATA-ERR MONIT MONIT-ERR 3313500600010 PRT/FIS PRT/FIS PRT/FIS PRT/FIS 3313500600011 2.049 0.121 3.756 0.005 3313500600012 ENDDATA 3 0 3313500600013 ENDSUBENT 12 0 3313500699999 SUBENT 33135007 20200717 31973313500700001 BIB 3 3 3313500700002 REACTION (90-TH-232(N,F)0-G-0,PR,KE) 3313500700003 ERR-ANALYS (DATA-ERR) No information on the source of uncertainty 3313500700004 STATUS (TABLE) Table 1 of Eur. Phys. J. A 56 (2020) 116 3313500700005 ENDBIB 3 0 3313500700006 NOCOMMON 0 0 3313500700007 DATA 2 1 3313500700008 DATA DATA-ERR 3313500700009 MEV MEV 3313500700010 0.91 0.04 3313500700011 ENDDATA 3 0 3313500700012 ENDSUBENT 11 0 3313500799999 SUBENT 33135008 20200717 31973313500800001 BIB 4 8 3313500800002 REACTION (90-TH-232(N,F)0-G-0,PR,FY) 3313500800003 MONITOR (98-CF-252(0,F)0-G-0,PR,FY) 3313500800004 ERR-ANALYS (ERR-T) Total uncertainty 3313500800005 (ERR-S) statistical uncertainty (1.8%) 3313500800006 (ERR-1) reference spectrum (1.2%) 3313500800007 (ERR-2) unfolding of the gamma detector response 3313500800008 (3.18%) 3313500800009 STATUS (TABLE) Table 1 of Eur. Phys. J. A 56 (2020) 116 3313500800010 ENDBIB 8 0 3313500800011 COMMON 3 3 3313500800012 ERR-S ERR-1 ERR-2 3313500800013 PER-CENT PER-CENT PER-CENT 3313500800014 1.8 1.2 3.18 3313500800015 ENDCOMMON 3 0 3313500800016 DATA 4 1 3313500800017 DATA ERR-T MONIT MONIT-ERR 3313500800018 PRT/FIS PRT/FIS PRT/FIS PRT/FIS 3313500800019 6.55 0.32 8.31 0.10 3313500800020 ENDDATA 3 0 3313500800021 ENDSUBENT 20 0 3313500899999 ENDENTRY 8 0 3313599999999