ENTRY 23653 20221126 23122365300000001 SUBENT 23653001 20221126 23122365300100001 BIB 13 43 2365300100002 TITLE Neutron induced fission cross section measurements of 2365300100003 240Pu and 242Pu relative to the neutron-proton 2365300100004 scattering cross section at 2.5 and 14.8 MeV 2365300100005 AUTHOR (F.Belloni, R.Eykens, J.Heyse, C.Matei, A.Moens, 2365300100006 R.Nolte, A.J.M.Plompen, S.Richter, G.Sibbens, 2365300100007 D.Vanleeuw, R.Wynants) 2365300100008 INSTITUTE (2ZZZGEL,2GERPTB) 2365300100009 (3RUMRUM) Extreme Light Infrastructure-Nuclear Physics,2365300100010 Bucharest-Magurele 2365300100011 REFERENCE (J,EPJ/A,58,227,2022) 2365300100012 (J,EPJ/CS,146,04062,2017) Prelim. data in tables 2365300100013 EXP-YEAR (2012) 2365300100014 FACILITY (VDG,2GERPTB) 3.7 MV Van de Graaff linear accelerator 2365300100015 INC-SOURCE (P-T) Ti/T (1.910 mg/cm2 Ti and 1.05 T atoms/Ti atoms) 2365300100016 with Ag backing 2365300100017 (D-T) Ti/T (0.957 mg/cm2 Ti and 0.81 T atoms/Ti atoms) 2365300100018 with Al backing 2365300100019 SAMPLE 15 mm radius molecular plated on Al foils (0.25 mm 2365300100020 thick, 50 mm diam) 2365300100021 (92-U-238,ENR=0.999992233) 2365300100022 FC1: 10.04(20) Bq, 114.6(2.3) ug/cm2 2365300100023 FC2: 10.71(20) Bq, 112.2(2.3) ug/cm2 2365300100024 (94-PU-240,ENR=0.998915) 2365300100025 FC1: 816(3)E+03 Bq, 13.78(6) ug/cm2 2365300100026 (94-PU-242,ENR=0.9996518) 2365300100027 FC2: 915(3)E+02 Bq, 88.7(8) ug/cm2 2365300100028 DECAY-DATA (92-U-238,4.468E+09YR,SF,,5.45E-05) 2365300100029 (94-PU-240,6561.YR,SF,,5.70E-06) 2365300100030 (94-PU-242,3.73E+05YR,SF,,5.50E-04) 2365300100031 DETECTOR (FISCH) Two identical Frisch Grid fission chambers (FC)2365300100032 housing 238U and 240Pu (FC1) or 238U and 242Pu (FC2) 2365300100033 back-to-back. 2365300100034 (TELES) Recoil proton telescope (T1) for neutron 2365300100035 fluence measurement at 0 deg between runs with FC 2365300100036 (LONGC) de Pangher long counter (PLC) parmanently 2365300100037 located at 98 deg to relate two measurements 2365300100038 CORRECTION Corrected for 2365300100039 - fission of impurity isotopes and spontaneous fission2365300100040 - neutron scattered by T/Ti target or FC 2365300100041 - beam attenuation 2365300100042 - dead time 2365300100043 STATUS (APRVD) Approved by Francesca Belloni (2022-12-19) 2365300100044 HISTORY (20221126C) On 2365300100045 ENDBIB 43 0 2365300100046 NOCOMMON 0 0 2365300100047 ENDSUBENT 46 0 2365300199999 SUBENT 23653002 20221126 23122365300200001 BIB 5 27 2365300200002 REACTION 1(94-PU-240(N,F),,SIG) 2365300200003 Measured relative to n-p scattering 2365300200004 2(94-PU-240(N,F),,SIG) 2365300200005 Measured relative to 238U(n,f) 2365300200006 MONITOR 1(1-H-1(N,EL)1-H-1,,DA) ENDF/B-V 2365300200007 2(92-U-238(N,F),,SIG) 2365300200008 MONIT-REF 2(,A.D.Carlson+,J,NDS,148,143,2018) 2365300200009 ERR-ANALYS (ERR-T) Total uncertainty 2365300200010 (ERR-1,,,U) Pu(n,f) events above threshold (1.5-1.9%)2365300200011 (ERR-2,,,U) Pu(sf) events above threshold (1.25-1.3%)2365300200012 (ERR-3) Pu(sf) branching ratio (0.35%)2365300200013 (ERR-4) Pu half-life (0.11%)2365300200014 (ERR-5) Neutron interaction with Pu FC (0.45-0.56%)2365300200015 1(ERR-6) Neutron flux (1.9-2.9%)2365300200016 2(ERR-7) Number of U atoms (2.0%)2365300200017 (ERR-8) Beam attenuation (0.1-0.4%)2365300200018 (ERR-9,,,U) U(n,f) events above threshold (0.69-0.71%)2365300200019 (ERR-10,,,U)U(n,f) events below threshold (0.72-0.84%)2365300200020 (ERR-11) Neutron interaction with U FC (0.4-0.6%)2365300200021 (ERR-12) Live time U (0.03%)2365300200022 (ERR-13) Zero-bias correction of U (0.3-0.8%)2365300200023 (MONIT-ERR) U standard cross section (0.7%)2365300200024 STATUS (TABLE) Tables 6 and 7 of Eur.Phys.J.A58(2022)227 2365300200025 except for the uncertainties in (1) number of U atoms,2365300200026 (2) neutron interaction with U FC and (3) Zero-bias 2365300200027 correction of U which were received from Francesca 2365300200028 Belloni (2022-12-12). 2365300200029 ENDBIB 27 0 2365300200030 COMMON 5 3 2365300200031 ERR-3 ERR-4 ERR-7 2ERR-12 2MONIT-ERR 2 2365300200032 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2365300200033 0.35 0.11 2.0 0.03 0.7 2365300200034 ENDCOMMON 3 0 2365300200035 DATA 15 2 2365300200036 EN EN-RSL-FW DATA 1ERR-T 1DATA 2ERR-T 22365300200037 ERR-1 ERR-2 ERR-5 ERR-6 1ERR-8 2ERR-9 22365300200038 ERR-10 2ERR-11 2ERR-13 2 2365300200039 MEV MEV B PER-CENT B PER-CENT 2365300200040 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2365300200041 PER-CENT PER-CENT PER-CENT 2365300200042 2.51 0.14 1.645 2.79 1.699 3.18 2365300200043 1.5 1.25 0.45 1.9 0.1 0.71 2365300200044 0.84 0.6 0.3 2365300200045 14.83 0.57 2.259 3.76 2.362 3.49 2365300200046 1.9 1.3 0.56 2.9 0.4 0.69 2365300200047 0.72 0.4 0.8 2365300200048 ENDDATA 12 0 2365300200049 ENDSUBENT 48 0 2365300299999 SUBENT 23653003 20221126 23122365300300001 BIB 5 27 2365300300002 REACTION 1(94-PU-242(N,F),,SIG) 2365300300003 Measured relative to n-p scattering 2365300300004 2(94-PU-242(N,F),,SIG) 2365300300005 Measured relative to 238U(n,f) 2365300300006 MONITOR 1(1-H-1(N,EL)1-H-1,,DA) ENDF/B-V 2365300300007 2(92-U-238(N,F),,SIG) 2365300300008 MONIT-REF 2(,A.D.Carlson+,J,NDS,148,143,2018) 2365300300009 ERR-ANALYS (ERR-T) Total uncertainty 2365300300010 (ERR-1,,,U) Pu(n,f) events above threshold (1.35-1.9%)2365300300011 (ERR-2,,,U) Pu(sf) events above threshold (0.68-0.7%)2365300300012 (ERR-3) Pu(sf) branching ratio (1.27%)2365300300013 (ERR-4) Pu half-life (0.8%)2365300300014 (ERR-5) Neutron interaction with Pu FC (0.52-0.67%)2365300300015 1(ERR-6) Neutron flux (1.9-2.9%)2365300300016 2(ERR-7) Number of U atoms (1.9%)2365300300017 (ERR-8) Beam attenuation (0.11-0.13%)2365300300018 (ERR-9,,,U) U(n,f) events above threshold (1.21-1.42%)2365300300019 (ERR-10,,,U)U(n,f) events below threshold (1.15-1.43%)2365300300020 (ERR-11) Neutron interaction with U FC (0.3-0.5%)2365300300021 (ERR-12) Live time U (0.03%)2365300300022 (ERR-13) Zero-bias correction of U (0.3-0.8%)2365300300023 (MONIT-ERR) U standard cross section (0.7%)2365300300024 STATUS (TABLE) Tables 8 and 9 of Eur.Phys.J.A58(2022)227 2365300300025 except for the uncertainties in (1) number of U atoms,2365300300026 (2) neutron interaction with U FC and (3) Zero-bias 2365300300027 correction of U which were received from Francesca 2365300300028 Belloni (2022-12-12). 2365300300029 ENDBIB 27 0 2365300300030 COMMON 5 3 2365300300031 ERR-3 ERR-4 ERR-7 2ERR-12 2MONIT-ERR 2 2365300300032 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2365300300033 1.27 0.8 1.9 0.03 0.7 2365300300034 ENDCOMMON 3 0 2365300300035 DATA 15 2 2365300300036 EN EN-RSL-FW DATA 1ERR-T 1DATA 2ERR-T 22365300300037 ERR-1 ERR-2 ERR-5 ERR-6 1ERR-8 2ERR-9 22365300300038 ERR-10 2ERR-11 2ERR-13 2 2365300300039 MEV MEV B PER-CENT B PER-CENT 2365300300040 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2365300300041 PER-CENT PER-CENT PER-CENT 2365300300042 2.51 0.14 1.344 2.93 1.374 3.48 2365300300043 1.35 0.7 0.67 1.9 0.11 1.21 2365300300044 1.15 0.5 0.3 2365300300045 14.83 0.57 2.075 3.89 2.087 3.94 2365300300046 1.9 0.68 0.52 2.9 0.13 1.42 2365300300047 1.43 0.3 0.8 2365300300048 ENDDATA 12 0 2365300300049 ENDSUBENT 48 0 2365300399999 SUBENT 23653004 20221126 23122365300400001 BIB 4 17 2365300400002 REACTION 1(92-U-238(N,F),,SIG) 2365300400003 Measured with 240Pu(n,f) 2365300400004 2(92-U-238(N,F),,SIG) 2365300400005 Measured with 242Pu(n,f) 2365300400006 MONITOR (1-H-1(N,EL)1-H-1,,DA) ENDF/B-V 2365300400007 ERR-ANALYS (ERR-T) Total uncertainty 2365300400008 (ERR-6) Neutron flux (1.90-2.90%) 2365300400009 (ERR-7) Number of U atoms (1.9-2.0%) 2365300400010 (ERR-9,,,U) U(n,f) events (0.72-1.24%) 2365300400011 (ERR-11) Neutron interaction with U FC (0.3-0.6%) 2365300400012 (ERR-12) Live time U (0.03%) 2365300400013 (ERR-13) Zero-bias correction of U (0.3-0.8%) 2365300400014 STATUS (TABLE) Tables 10 and 11 of Eur.Phys.J.A58(2022)2272365300400015 except for the uncertainties in (1) number of U atoms,2365300400016 (2) neutron interaction with U FC and (3) Zero-bias 2365300400017 correction of U which were received from Francesca 2365300400018 Belloni (2022-12-12). 2365300400019 ENDBIB 17 0 2365300400020 COMMON 3 3 2365300400021 ERR-7 1ERR-7 2ERR-12 2365300400022 PER-CENT PER-CENT PER-CENT 2365300400023 2.0 1.9 0.03 2365300400024 ENDCOMMON 3 0 2365300400025 DATA 12 2 2365300400026 EN EN-RSL-FW DATA 1ERR-T 1DATA 2ERR-T 22365300400027 ERR-6 ERR-9 1ERR-9 2ERR-11 1ERR-11 2ERR-13 2365300400028 MEV MEV B PER-CENT B PER-CENT 2365300400029 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2365300400030 2.51 0.14 0.5259 2.95 0.5317 2.95 2365300400031 1.90 0.84 1.15 0.6 0.5 0.3 2365300400032 14.83 0.57 1.1636 3.67 1.2260 3.75 2365300400033 2.90 0.72 1.24 0.4 0.3 0.8 2365300400034 ENDDATA 8 0 2365300400035 ENDSUBENT 34 0 2365300499999 ENDENTRY 4 0 2365399999999