ENTRY 40636 20230228 4063600000001 SUBENT 40636001 20230228 20231011 4063600100001 BIB 6 16 4063600100002 TITLE Fission cross sections for Th230, Pu240, Pu241, and 4063600100003 Am241 by neutrons with energies of 2.5 and 14.6 MeV 4063600100004 AUTHOR (M.I.Kazarinova,Yu.S.Zamyatin,V.M.Gorbachev) 4063600100005 There is an misprint in SJA,8,125,1961 : 4063600100006 Yu.S.Zamyatin -> Yu.S.ZamyatNin (right, as in AE,8,139)4063600100007 REFERENCE (J,SJA,8,125,1961) Engl.translation of AE,8,139,1960 4063600100008 (J,AE,8,139,1960) Issue 2. 4063600100009 INSTITUTE (4RUSKUR) 4063600100010 STATUS (TABLE) Table 2 of SJA,8,125,1961 4063600100011 HISTORY (19831005C) Compiled at the centre 4063600100012 (19880921U) One author name (Zamyatnin) and MONITOR 4063600100013 headings in SAN 002, 004, 006, 008 changed 4063600100014 (19911016U) MONITOR codes in SAN 002, 004, 006, 008 4063600100015 corrected. Sample content is given 4063600100016 (20230228A) Update for current rules and dictionaries. 4063600100017 Decay data (used in weight determination) were added. 4063600100018 ENDBIB 16 0 4063600100019 NOCOMMON 0 0 4063600100020 ENDSUBENT 19 0 4063600199999 SUBENT 40636002 20230228 20231011 4063600200001 BIB 9 22 4063600200002 REACTION (90-TH-230(N,F),,SIG) 4063600200003 INC-SOURCE (D-D) 4063600200004 (D-T) 4063600200005 DECAY-DATA (90-TH-230,8.E+4YR,A) 4063600200006 SAMPLE Th-230 effective weight is 1870+-40 microgram, 4063600200007 Th-230 content is 35+-1 % , Th-232 content 65+-1 % . 4063600200008 DETECTOR (FISCH) Double fission chamber 4063600200009 (LONGC) For 2.5-MeV neutron flux monitoring 4063600200010 MONITOR ((MONIT)90-TH-232(N,F),,SIG) 4063600200011 0.13 b at 2.5 MeV, 0.34 b at 14.6 MeV 4063600200012 ANALYSIS Measured values by two ways were the same in the 4063600200013 range of uncertainties : 4063600200014 1. relative to Th-232 at 2.5 keV, 4063600200015 2. relative known cross section at 14.6 MeV, using 4063600200016 ratio isotope/monitor for 2.5 and 14.6 MeV and 4063600200017 Th-232 cross sections 0.13 and 0.34 b at 2.5 and 14.6 4063600200018 MeV, respectively. 4063600200019 ERR-ANALYS (DATA-ERR) Most probably total error 4063600200020 HISTORY (19911016U) Th-230 in monitor code corrected to Th-232 4063600200021 (20230228A) MONIT 0.34 b and EN-NRM 14.6 MeV were 4063600200022 deleted from COMMON block according to a comment of 4063600200023 N.Otsuka (NDS,IAEA). 4063600200024 ENDBIB 22 0 4063600200025 NOCOMMON 0 0 4063600200026 DATA 4 1 4063600200027 EN DATA DATA-ERR MONIT 4063600200028 MEV B B B 4063600200029 2.5 0.41 0.08 0.13 4063600200030 ENDDATA 3 0 4063600200031 ENDSUBENT 30 0 4063600299999 SUBENT 40636003 20230228 20231011 4063600300001 BIB 8 11 4063600300002 REACTION (90-TH-230(N,F),,SIG) 4063600300003 DECAY-DATA (90-TH-230,8.E+4YR,A) 4063600300004 DETECTOR (FISCH) 4063600300005 SAMPLE Th-230 effective weight is 1870+-40 microgram, 4063600300006 Th-230 content is 35+-1 % , Th-232 content 65+-1 % . 4063600300007 INC-SOURCE (D-T) 4063600300008 METHOD (ASSOP) For neutron flux measurement of alpha-particles4063600300009 from T(d,n)He4 reaction 4063600300010 MONITOR Absolute measurements 4063600300011 ERR-ANALYS (ERR-T) Most probably total error 4063600300012 (ERR-S,2.,3.) Statistical accuracy 2-3 %. 4063600300013 ENDBIB 11 0 4063600300014 NOCOMMON 0 0 4063600300015 DATA 3 1 4063600300016 EN DATA ERR-T 4063600300017 MEV B B 4063600300018 14.6 0.72 0.15 4063600300019 ENDDATA 3 0 4063600300020 ENDSUBENT 19 0 4063600399999 SUBENT 40636004 20230228 20231011 4063600400001 BIB 10 23 4063600400002 REACTION (94-PU-240(N,F),,SIG) 4063600400003 INC-SOURCE (D-D) 4063600400004 (D-T) 4063600400005 DECAY-DATA (94-PU-240,6.6E+3YR,A) 4063600400006 94-PU-240,1.2E+11,SF 4063600400007 SAMPLE Pu-240 effective weight is 345+-15 microgram, 4063600400008 Pu-240 content is 85 % , Pu-239 content is 15 % . 4063600400009 DETECTOR (FISCH) Double fission chamber 4063600400010 (LONGC) For 2.5-MeV neutron flux monitoring 4063600400011 MONITOR ((MONIT)92-U-238(N,F),,SIG) 4063600400012 0.58 b at 2.5 MeV, 1.1 b at 14.6 MeV. 4063600400013 ANALYSIS Measured values by two ways were the same in the 4063600400014 range of uncertainties : 4063600400015 1. relative to U-238 at 2.5 keV, 4063600400016 2. relative known cross section at 14.6 MeV, using 4063600400017 ratio isotope/monitor for 2.5 and 14.6 MeV and 4063600400018 U-238 cross sections 0.58 and 1.1 b at 2.5 and 14.6 4063600400019 MeV, respectively. 4063600400020 ERR-ANALYS (DATA-ERR) Most probably total error 4063600400021 REL-REF (A,41675004,V.G.Nesterov+,J,ZET,35,532,1958) 4063600400022 HISTORY (20230228A) MONIT 1.1 b and EN-NRM 14.6 MeV were 4063600400023 deleted from COMMON block according to a comment of 4063600400024 N.Otsuka (NDS,IAEA). 4063600400025 ENDBIB 23 0 4063600400026 NOCOMMON 0 0 4063600400027 DATA 4 1 4063600400028 EN DATA DATA-ERR MONIT 4063600400029 MEV B B B 4063600400030 2.5 1.6 0.3 0.58 4063600400031 ENDDATA 3 0 4063600400032 ENDSUBENT 31 0 4063600499999 SUBENT 40636005 20230228 20231011 4063600500001 BIB 9 14 4063600500002 REACTION (94-PU-240(N,F),,SIG) 4063600500003 DECAY-DATA (94-PU-240,6.6E+3YR,A) 4063600500004 94-PU-240,1.2E+11,SF 4063600500005 SAMPLE Pu-240 effective weight is 345+-15 microgram, 4063600500006 Pu-240 content is 85 % , Pu-239 content is 15 % . 4063600500007 DETECTOR (LONGC) For neutron flux monitoring 4063600500008 (FISCH) 4063600500009 INC-SOURCE (D-T) 4063600500010 METHOD (ASSOP) For neutron flux measurement of alpha-particles4063600500011 from T(d,n)He4 reaction 4063600500012 MONITOR Absolute measurements 4063600500013 ERR-ANALYS (ERR-T) Most probably total error 4063600500014 (ERR-S,2.,3.) Statistical accuracy 2-3 %. 4063600500015 REL-REF (A,41675003,V.G.Nesterov+,J,ZET,35,532,1958) 4063600500016 ENDBIB 14 0 4063600500017 NOCOMMON 0 0 4063600500018 DATA 3 1 4063600500019 EN DATA ERR-T 4063600500020 MEV B B 4063600500021 14.6 2.4 0.3 4063600500022 ENDDATA 3 0 4063600500023 ENDSUBENT 22 0 4063600599999 SUBENT 40636006 20230228 20231011 4063600600001 BIB 9 21 4063600600002 REACTION (94-PU-241(N,F),,SIG) 4063600600003 INC-SOURCE (D-D) 4063600600004 (D-T) 4063600600005 DECAY-DATA (94-PU-241,13.2YR) 4063600600006 SAMPLE Pu-241 effective weight is 50.6+-1.6 microgram, 4063600600007 Pu-241 content is 88 % , Am-241 content - 12 % . 4063600600008 DETECTOR (FISCH) Double fission chamber 4063600600009 (LONGC) For 2.5-MeV neutron flux monitoring 4063600600010 MONITOR ((MONIT)92-U-238(N,F),,SIG) 4063600600011 0.58 b at 2.5 MeV, 1.1 b at 14.6 MeV. 4063600600012 ANALYSIS Measured values by two ways were the same in the 4063600600013 range of uncertainties : 4063600600014 1. relative to U-238 at 2.5 keV, 4063600600015 2. relative known cross section at 14.6 MeV, using 4063600600016 ratio isotope/monitor for 2.5 and 14.6 MeV and 4063600600017 U-238 cross sections 0.58 and 1.1 b at 2.5 and 14.6 4063600600018 MeV, respectively. 4063600600019 ERR-ANALYS (DATA-ERR) Most probably total error 4063600600020 HISTORY (20230228A) MONIT 1.1 b and EN-NRM 14.6 MeV were 4063600600021 deleted from COMMON block according to a comment of 4063600600022 N.Otsuka (NDS,IAEA). 4063600600023 ENDBIB 21 0 4063600600024 NOCOMMON 0 0 4063600600025 DATA 4 1 4063600600026 EN DATA DATA-ERR MONIT 4063600600027 MEV B B B 4063600600028 2.5 1.2 0.2 0.58 4063600600029 ENDDATA 3 0 4063600600030 ENDSUBENT 29 0 4063600699999 SUBENT 40636007 20230228 20231011 4063600700001 BIB 9 17 4063600700002 REACTION (94-PU-241(N,F),,SIG) 4063600700003 DECAY-DATA (94-PU-241,13.2YR) 4063600700004 Alpha particles from Am-241 after Pu-241 B- decay. 4063600700005 DETECTOR (LONGC) For neutron flux monitoring 4063600700006 (FISCH) Fission chamber 4063600700007 SAMPLE Pu-241 effective weight is 50.6+-1.6 microgram, 4063600700008 Pu-241 content is 88 % , Am-241 content - 12 % . 4063600700009 ASSUMED (ASSUM,94-PU-241(N,F),,SIG) at thermal energy. 4063600700010 Pu-241 layer was also "weighted" in a thermal neutron 4063600700011 flux by using the Pu-241 thermal neutron cross section4063600700012 of 1025 +-10 b. 4063600700013 INC-SOURCE (D-T) 4063600700014 METHOD (ASSOP) For neutron flux measurement of alpha-particles4063600700015 from T(d,n)He4 reaction 4063600700016 MONITOR Absolute measurements 4063600700017 ERR-ANALYS (ERR-T) Most probably total error 4063600700018 (ERR-S,2.,3.) Statistical accuracy 2-3 %. 4063600700019 ENDBIB 17 0 4063600700020 COMMON 2 3 4063600700021 ASSUM ASSUM-ERR 4063600700022 B B 4063600700023 1025. 10. 4063600700024 ENDCOMMON 3 0 4063600700025 DATA 3 1 4063600700026 EN DATA ERR-T 4063600700027 MEV B B 4063600700028 14.6 2.05 0.1 4063600700029 ENDDATA 3 0 4063600700030 ENDSUBENT 29 0 4063600799999 SUBENT 40636008 20230228 20231011 4063600800001 BIB 10 24 4063600800002 REACTION (95-AM-241(N,F),,SIG) 4063600800003 INC-SOURCE (D-D) 4063600800004 (D-T) 4063600800005 DECAY-DATA (95-AM-241,458.YR,A) 4063600800006 SAMPLE Am-241 effective weight is 89+-2 microgram, 4063600800007 Am-241 content is 100 % . 4063600800008 DETECTOR (FISCH) Double fission chamber 4063600800009 (LONGC) For 2.5-MeV neutron flux monitoring 4063600800010 MONITOR ((MONIT)92-U-238(N,F),,SIG) 4063600800011 0.58 b at 2.5 MeV, 1.1 b at 14.6 MeV. 4063600800012 ANALYSIS Measured values by two ways were the same in the 4063600800013 range of uncertainties : 4063600800014 1. relative to U-238 at 2.5 keV, 4063600800015 2. relative known cross section at 14.6 MeV, using 4063600800016 ratio isotope/monitor for 2.5 and 14.6 MeV and 4063600800017 U-238 cross sections 0.58 and 1.1 b at 2.5 and 14.6 4063600800018 MeV, respectively. 4063600800019 ERR-ANALYS (DATA-ERR) Most probably total error 4063600800020 COMMENT Measured data are compared with 1.35 b value from 4063600800021 D.Hughes,R.Schwartz, Neutron Cross Sections, New York, 4063600800022 BNL,1958. 4063600800023 HISTORY (20230228A) MONIT 1.1 b and EN-NRM 14.6 MeV were 4063600800024 deleted from COMMON block according to a comment of 4063600800025 N.Otsuka (NDS,IAEA). 4063600800026 ENDBIB 24 0 4063600800027 NOCOMMON 0 0 4063600800028 DATA 4 1 4063600800029 EN DATA DATA-ERR MONIT 4063600800030 MEV B B B 4063600800031 2.5 1.95 0.2 0.58 4063600800032 ENDDATA 3 0 4063600800033 ENDSUBENT 32 0 4063600899999 SUBENT 40636009 20230228 20231011 4063600900001 BIB 9 13 4063600900002 REACTION (95-AM-241(N,F),,SIG) 4063600900003 DECAY-DATA (95-AM-241,458.YR,A) 4063600900004 SAMPLE Am-241 effective weight is 89+-2 microgram, 4063600900005 Am-241 content is 100 % . 4063600900006 DETECTOR (LONGC) For neutron flux monitoring 4063600900007 (FISCH) 4063600900008 INC-SOURCE (D-T) 4063600900009 METHOD (ASSOP) For neutron flux measurement of alpha-particles4063600900010 from T(d,n)He4 reaction 4063600900011 MONITOR Absolute measurements 4063600900012 ERR-ANALYS (ERR-T) Most probably total error 4063600900013 (ERR-S,2.,3.) Statistical accuracy 2-3 %. 4063600900014 REL-REF (D,40443002,A.N.Protopopov+,J,AE,6,67,1959) Issue 1. 4063600900015 ENDBIB 13 0 4063600900016 COMMON 1 3 4063600900017 HL-ERR 4063600900018 YR 4063600900019 0.5 4063600900020 ENDCOMMON 3 0 4063600900021 DATA 3 1 4063600900022 EN DATA ERR-T 4063600900023 MEV B B 4063600900024 14.6 2.95 0.15 4063600900025 ENDDATA 3 0 4063600900026 ENDSUBENT 25 0 4063600999999 ENDENTRY 9 0 4063699999999