ENTRY 21821 20200928 22952182100000001 SUBENT 21821001 20200928 22952182100100001 BIB 11 33 2182100100002 TITLE Absolute measurements of 240Pu(n,f), 242Pu(n,f) and 2182100100003 237Np(n,f) at incident energy of 2.5 MeV 2182100100004 AUTHOR (M.Cance, G.Grenier) 2182100100005 INSTITUTE (2FR BRC) 2182100100006 REFERENCE (C,82ANTWER,,51,1982) 2182100100007 FACILITY (VDG,2FR BRC) 4 MV Van de Graaff operated at 2182100100008 frequency of 2.5 MHz f and pulse width of 1 ns. 2182100100009 INC-SOURCE (P-T) TiT deposit on Au support 2182100100010 DETECTOR (FISCH) 2pi fission chamber 2182100100011 METHOD (TOF) for selection of fissions associated with 2182100100012 neutron burst 2182100100013 CORRECTION Corrected for 2182100100014 1. Fission chamber 2182100100015 - extrapolation to zero fiss. amplitude 2182100100016 - loss of fission events 2182100100017 - fission of other isotopes 2182100100018 - fission due to scattered neutrons 2182100100019 - fission without tritium 2182100100020 2. Proton recoil telescope 2182100100021 - proton recoil without polyethylene radiator 2182100100022 - proton recoil without tritium 2182100100023 - neutron attenuation in Ta backing 2182100100024 3. BF3 counter 2182100100025 - background without tritium 2182100100026 - background with shadow bar 2182100100027 - neutron attenuation in air 2182100100028 - neutron attenuation in hybrid detector. 2182100100029 STATUS (TABLE) Table 4 of 82ANTWER,,51,1982 2182100100030 HISTORY (19830117C) G.C. 2182100100031 (19830210E) 2182100100032 (20071223A) Date is corrected 2182100100033 (20071224A) Last corrections have been done - SM. 2182100100034 (20200928A) On. Recompiled. 2182100100035 ENDBIB 33 0 2182100100036 NOCOMMON 0 0 2182100100037 ENDSUBENT 36 0 2182100199999 SUBENT 21821002 20200928 22952182100200001 BIB 8 33 2182100200002 REACTION (94-PU-240(N,F),,SIG) 2182100200003 DECAY-DATA (94-PU-240,6550.YR) +/-20 year 2182100200004 SAMPLE 240PuF3 (44.33 ug/cm2) deposited on a Ta supoprt 2182100200005 (0.3 mm thick) 2182100200006 prepared by vacuum evaporation. 2182100200007 (94-PU-240,ENR=0.98478) 2182100200008 (94-PU-238,ENR=0.000109) 2182100200009 (94-PU-239,ENR=0.006724) 2182100200010 (94-PU-241,ENR=0.004701) 2182100200011 (94-PU-242,ENR=0.003677) 2182100200012 (94-PU-244,ENR=0.000006) 2182100200013 DETECTOR (TELES,SOLST,SOLST) proton recoil telescope, 50 um 2182100200014 dE detector and 100 um E detector after polyethylene 2182100200015 radiator (10 um thick) 2182100200016 MONITOR (1-H-1(N,EL)1-H-1,,SIG) 2182100200017 ERR-ANALYS (ERR-T) Total uncertainty propagated from 2182100200018 (ERR-1) Extrapolation to zero fission amplitude (0.1%)2182100200019 (ERR-2) Loss of fission events (0.03%)2182100200020 (ERR-3) Fission of impurities (0.18%)2182100200021 (ERR-4) Fission due to scattered neutrons (0.5%)2182100200022 (ERR-5) Number of fission target atoms (0.3%)2182100200023 (ERR-6) Fission statistics (0.5%)2182100200024 (ERR-7) Geometry (0.5%)2182100200025 (ERR-8) Proton recoil without radiator (0.82%)2182100200026 (ERR-9) Proton recoil without tritium (0.1%)2182100200027 (ERR-10) Neutron attenuation in Ta backing (0.1%)2182100200028 (ERR-11) n-p scattering cross section (0.75%)2182100200029 (ERR-12) Number of proton radiator atoms (0.2%)2182100200030 (ERR-13) Proton recoil detector efficiency (0.3%)2182100200031 (ERR-14) Proton recoil statistics (0.2%)2182100200032 STATUS (COREL,21821003) Measured with BF3 counter 2182100200033 HISTORY (20071224A) Last corrections have been done - SM 2182100200034 (20200928A) On. ERR-ANALYS revised. 2182100200035 ENDBIB 33 0 2182100200036 COMMON 14 9 2182100200037 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 2182100200038 ERR-7 ERR-8 ERR-9 ERR-10 ERR-11 ERR-12 2182100200039 ERR-13 ERR-14 2182100200040 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2182100200041 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2182100200042 PER-CENT PER-CENT 2182100200043 0.1 0.03 0.18 0.5 0.3 0.5 2182100200044 0.5 0.82 0.1 0.1 0.75 0.2 2182100200045 0.3 0.2 2182100200046 ENDCOMMON 9 0 2182100200047 DATA 4 1 2182100200048 EN EN-RSL-HW DATA ERR-T 2182100200049 MEV MEV B PER-CENT 2182100200050 2.47 0.03 1.667 1.52 2182100200051 ENDDATA 3 0 2182100200052 ENDSUBENT 51 0 2182100299999 SUBENT 21821003 20200928 22952182100300001 BIB 7 28 2182100300002 REACTION (94-PU-240(N,F),,SIG) 2182100300003 DECAY-DATA (94-PU-240,6550.YR) +/-20 year 2182100300004 SAMPLE 240PuF3 (44.33 ug/cm2) deposited on a Ta supoprt 2182100300005 (0.3 mm thick) prepared by vacuum evaporation 2182100300006 (94-PU-240,ENR=0.98478) 2182100300007 (94-PU-238,ENR=0.000109) 2182100300008 (94-PU-239,ENR=0.006724) 2182100300009 (94-PU-241,ENR=0.004701) 2182100300010 (94-PU-242,ENR=0.003677) 2182100300011 (94-PU-244,ENR=0.000006) 2182100300012 DETECTOR (BF3) BF3 counter as a neutron flux detector 2182100300013 ERR-ANALYS (ERR-T) Total uncertainty propagated from 2182100300014 (ERR-1) Extrapolation to zero fission amplitude (0.1%)2182100300015 (ERR-2) Loss of fission events (0.03%)2182100300016 (ERR-3) Fission of impurities (0.18%)2182100300017 (ERR-4) Fission due to scattered neutrons (0.5%)2182100300018 (ERR-5) Number of fission target atoms (0.3%)2182100300019 (ERR-6) Fission statistics (0.5%)2182100300020 (ERR-7) Geometry (0.5%)2182100300021 (ERR-8) Background with shadow bar (0.3%)2182100300022 (ERR-9) Neutron attenuation in air (0.3%)2182100300023 (ERR-10) Neutron attenuation in hybrid detector (0.3%)2182100300024 (ERR-11) BF3 counter efficiency (2.5%)2182100300025 STATUS (COREL,21821002) Measured with recoil proton detection 2182100300026 HISTORY (20071224A) Last corrections have been done - SM 2182100300027 Data changed from 1.665 B to 1.596 B (After N.O. 2182100300028 comment) 2182100300029 (20200928A) On. ERR-ANALYS revised. 2182100300030 ENDBIB 28 0 2182100300031 COMMON 11 6 2182100300032 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 2182100300033 ERR-7 ERR-8 ERR-9 ERR-10 ERR-11 2182100300034 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2182100300035 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2182100300036 0.1 0.03 0.18 0.5 0.3 0.5 2182100300037 0.5 0.3 0.3 0.3 2.5 2182100300038 ENDCOMMON 6 0 2182100300039 DATA 4 1 2182100300040 EN EN-RSL-HW DATA ERR-T 2182100300041 MEV MEV B PER-CENT 2182100300042 2.47 0.03 1.596 2.72 2182100300043 ENDDATA 3 0 2182100300044 ENDSUBENT 43 0 2182100399999 SUBENT 21821004 20200928 22952182100400001 BIB 8 33 2182100400002 REACTION (94-PU-242(N,F),,SIG) 2182100400003 DECAY-DATA (94-PU-242,3.76E+06YR) +/-0.02E+06 year 2182100400004 By compiler (2020-09-28): 2182100400005 This half-life is 10 times longer than current value. 2182100400006 SAMPLE 242PuF3 (50.00 ug/cm2) deposited on a Ta supoprt 2182100400007 (0.3 mm thick) prepared by vacuum evaporation 2182100400008 (94-PU-242,ENR=0.998192) 2182100400009 (94-PU-238,ENR=0.000035) 2182100400010 (94-PU-239,ENR=0.000286) 2182100400011 (94-PU-240,ENR=0.000339) 2182100400012 (94-PU-241,ENR=0.000648) 2182100400013 DETECTOR (TELES,SOLST,SOLST) proton recoil telescope, 50 um 2182100400014 dE detector and 100 um E detector after polyethylene 2182100400015 radiator (10 um thick) 2182100400016 MONITOR (1-H-1(N,EL)1-H-1,,SIG) 2182100400017 ERR-ANALYS (ERR-T) Total uncertainty propagated from 2182100400018 (ERR-1) Extrapolation to zero fission amplitude (0.1%)2182100400019 (ERR-2) Loss of fission events (0.03%)2182100400020 (ERR-3) Fission of impurities (0.02%)2182100400021 (ERR-4) Fission due to scattered neutrons (0.5%)2182100400022 (ERR-5) Number of fission target atoms (0.5%)2182100400023 (ERR-6) Fission statistics (0.9%)2182100400024 (ERR-7) Geometry (0.5%)2182100400025 (ERR-8) Proton recoil without radiator (0.86%)2182100400026 (ERR-9) Proton recoil without tritium (0.1%)2182100400027 (ERR-10) Neutron attenuation in Ta backing (0.1%)2182100400028 (ERR-11) n-p scattering cross section (0.75%)2182100400029 (ERR-12) Number of proton radiator atoms (0.2%)2182100400030 (ERR-13) Proton recoil detector efficiency (0.3%)2182100400031 (ERR-14) Proton recoil statistics (0.3%)2182100400032 STATUS (COREL,21821005) Measured with BF3 counter 2182100400033 HISTORY (20071224A) Last corrections have been done - SM 2182100400034 (20200928A) On. ERR-ANALYS revised. 2182100400035 ENDBIB 33 0 2182100400036 COMMON 14 9 2182100400037 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 2182100400038 ERR-7 ERR-8 ERR-9 ERR-10 ERR-11 ERR-12 2182100400039 ERR-13 ERR-14 2182100400040 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2182100400041 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2182100400042 PER-CENT PER-CENT 2182100400043 0.1 0.03 0.02 0.5 0.5 0.9 2182100400044 0.5 0.86 0.1 0.1 0.75 0.2 2182100400045 0.3 0.3 2182100400046 ENDCOMMON 9 0 2182100400047 DATA 4 1 2182100400048 EN EN-RSL-HW DATA ERR-T 2182100400049 MEV MEV B PER-CENT 2182100400050 2.47 0.03 1.391 1.76 2182100400051 ENDDATA 3 0 2182100400052 ENDSUBENT 51 0 2182100499999 SUBENT 21821005 20200928 22952182100500001 BIB 7 26 2182100500002 REACTION (94-PU-242(N,F),,SIG) 2182100500003 DECAY-DATA (94-PU-242,3.76E+06YR) +/-0.02E+06 year 2182100500004 This half-life is 10 times longer than current value. 2182100500005 SAMPLE 242PuF3 (50.00 ug/cm2) deposited on a Ta supoprt 2182100500006 (0.3 mm thick) prepared by vacuum evaporation 2182100500007 (94-PU-242,ENR=0.998192) 2182100500008 (94-PU-238,ENR=0.000035) 2182100500009 (94-PU-239,ENR=0.000286) 2182100500010 (94-PU-240,ENR=0.000339) 2182100500011 (94-PU-241,ENR=0.000648) 2182100500012 DETECTOR (BF3) BF3 counter as a neutron flux detector 2182100500013 ERR-ANALYS (ERR-T) Total uncertainty propagated from 2182100500014 (ERR-1) Extrapolation to zero fission amplitude (0.1%)2182100500015 (ERR-2) Loss of fission events (0.03%)2182100500016 (ERR-3) Fission of impurities (0.02%)2182100500017 (ERR-4) Fission due to scattered neutrons (0.5%)2182100500018 (ERR-5) Number of fission target atoms (0.5%)2182100500019 (ERR-6) Fission statistics (0.9%)2182100500020 (ERR-7) Geometry (0.5%)2182100500021 (ERR-8) Background with shadow bar (0.3%)2182100500022 (ERR-9) Neutron attenuation in air (0.3%)2182100500023 (ERR-10) Neutron attenuation in hybrid detector (0.3%)2182100500024 (ERR-11) BF3 counter efficiency (2.5%)2182100500025 STATUS (COREL,21821004) Measured with recoil proton detection 2182100500026 HISTORY (20071224A) Last corrections have been done - SM 2182100500027 (20200928A) On. ERR-ANALYS revised. 2182100500028 ENDBIB 26 0 2182100500029 COMMON 11 6 2182100500030 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 2182100500031 ERR-7 ERR-8 ERR-9 ERR-10 ERR-11 2182100500032 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2182100500033 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2182100500034 0.1 0.03 0.02 0.5 0.5 0.9 2182100500035 0.5 0.3 0.3 0.3 2.5 2182100500036 ENDCOMMON 6 0 2182100500037 DATA 4 1 2182100500038 EN EN-RSL-HW DATA ERR-T 2182100500039 MEV MEV B PER-CENT 2182100500040 2.47 0.03 1.388 2.84 2182100500041 ENDDATA 3 0 2182100500042 ENDSUBENT 41 0 2182100599999 SUBENT 21821006 20200928 22952182100600001 BIB 7 25 2182100600002 REACTION (93-NP-237(N,F),,SIG) 2182100600003 DECAY-DATA (93-NP-237,2.14E+6YR) +/-0.01E+06 year 2182100600004 SAMPLE (93-NP-237,ENR=1.) 2182100600005 237Np (74.49 ug/cm2) deposited on a Ta supoprt 2182100600006 (0.3 mm thick) prepared by sputtering 2182100600007 DETECTOR (TELES,SOLST,SOLST) proton recoil telescope, 50 um 2182100600008 dE detector and 100 um E detector after polyethylene 2182100600009 radiator (10 um thick) 2182100600010 ERR-ANALYS (ERR-T) Total uncertainty propagated from 2182100600011 (ERR-1) Extrapolation to zero fission amplitude (0.1%)2182100600012 (ERR-2) Loss of fission events (0.1%)2182100600013 (ERR-4) Fission due to scattered neutrons (0.5%)2182100600014 (ERR-5) Number of fission target atoms (0.6%)2182100600015 (ERR-6) Fission statistics (0.88%)2182100600016 (ERR-7) Geometry (0.5%)2182100600017 (ERR-8) Proton recoil without radiator (0.9%)2182100600018 (ERR-9) Proton recoil without tritium (0.1%)2182100600019 (ERR-10) Neutron attenuation in Ta backing (0.1%)2182100600020 (ERR-11) n-p scattering cross section (0.75%)2182100600021 (ERR-12) Number of proton radiator atoms (0.2%)2182100600022 (ERR-13) Proton recoil detector efficiency (0.3%)2182100600023 (ERR-14) Proton recoil statistics (0.4%)2182100600024 STATUS (COREL,21821007) Measured with BF3 counter 2182100600025 HISTORY (20071224A) Last corrections have been done - SM 2182100600026 (20200928A) On. ERR-ANALYS revised. 2182100600027 ENDBIB 25 0 2182100600028 COMMON 13 9 2182100600029 ERR-1 ERR-2 ERR-4 ERR-5 ERR-6 ERR-7 2182100600030 ERR-8 ERR-9 ERR-10 ERR-11 ERR-12 ERR-13 2182100600031 ERR-14 2182100600032 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2182100600033 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2182100600034 PER-CENT 2182100600035 0.1 0.1 0.5 0.6 0.88 0.5 2182100600036 0.9 0.1 0.1 0.75 0.2 0.3 2182100600037 0.4 2182100600038 ENDCOMMON 9 0 2182100600039 DATA 4 1 2182100600040 EN EN-RSL-HW DATA ERR-T 2182100600041 MEV MEV B PER-CENT 2182100600042 2.47 0.03 1.646 1.86 2182100600043 ENDDATA 3 0 2182100600044 ENDSUBENT 43 0 2182100699999 SUBENT 21821007 20200928 22952182100700001 BIB 7 20 2182100700002 REACTION (93-NP-237(N,F),,SIG) 2182100700003 DECAY-DATA (93-NP-237,2.14E+6YR) +/-0.01E+06 year 2182100700004 SAMPLE (93-NP-237,ENR=1.) 2182100700005 237Np (74.49 ug/cm2) deposited on a Ta supoprt 2182100700006 (0.3 mm thick) prepared by sputtering 2182100700007 DETECTOR (BF3) BF3 counter as a neutron flux detector 2182100700008 ERR-ANALYS (ERR-T) Total uncertainty propagated from 2182100700009 (ERR-1) Extrapolation to zero fission amplitude (0.1%)2182100700010 (ERR-2) Loss of fission events (0.1%)2182100700011 (ERR-4) Fission due to scattered neutrons (0.5%)2182100700012 (ERR-5) Number of fission target atoms (0.6%)2182100700013 (ERR-6) Fission statistics (0.88%)2182100700014 (ERR-7) Geometry (0.5%)2182100700015 (ERR-8) Background with shadow bar (0.3%)2182100700016 (ERR-9) Neutron attenuation in air (0.3%)2182100700017 (ERR-10) Neutron attenuation in hybrid detector (0.3%)2182100700018 (ERR-11) BF3 counter efficiency (2.5%)2182100700019 STATUS (COREL,21821006) Measured with recoil proton detection 2182100700020 HISTORY (20071224A) Last corrections have been done - SM 2182100700021 (20200928A) On. ERR-ANALYS revised. 2182100700022 ENDBIB 20 0 2182100700023 COMMON 10 6 2182100700024 ERR-1 ERR-2 ERR-4 ERR-5 ERR-6 ERR-7 2182100700025 ERR-8 ERR-9 ERR-10 ERR-11 2182100700026 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2182100700027 PER-CENT PER-CENT PER-CENT PER-CENT 2182100700028 0.1 0.1 0.5 0.6 0.88 0.5 2182100700029 0.3 0.3 0.3 2.5 2182100700030 ENDCOMMON 6 0 2182100700031 DATA 4 1 2182100700032 EN EN-RSL-HW DATA ERR-T 2182100700033 MEV MEV B PER-CENT 2182100700034 2.47 0.03 1.630 2.88 2182100700035 ENDDATA 3 0 2182100700036 ENDSUBENT 35 0 2182100799999 ENDENTRY 7 0 2182199999999