ENTRY 21744 20220208 23092174400000001 SUBENT 21744001 20220208 23092174400100001 BIB 8 35 2174400100002 TITLE Fission fragment mass and energy distributions 2174400100003 for the neutron induced fission of Pu-239 as 2174400100004 functions of the resonance spins 2174400100005 AUTHOR (C.M.C.Wagemans,G.Wegener-Penning,H.Weigmann, 2174400100006 R.Barthelemy) 2174400100007 INSTITUTE (2ZZZGEL) Experimental site, H.W.,R.B. 2174400100008 (2BLGMOL) C.W., G.W.-P. Experimental site. 2174400100009 (2BLGGHT) C.W. 2174400100010 REFERENCE (C,79JUELICH,2,143,1979) 2174400100011 (P,NEANDC(E)-212,7,1980) 2174400100012 (P,INDC(EUR)-11,31,1977) 2174400100013 METHOD (COINC) Double energy measurement. 2174400100014 Mass and momentum conservation relations and the 2174400100015 Shmitt-Neiler calibration are used to convert the 2174400100016 pulse heights to energies. The nu-bar versus 2174400100017 fission fragment mass curve was used to obtain 2174400100018 the pre-neutron masses and energies. 2174400100019 DETECTOR (SIBAR) Two large Si(Au) surface barrier detectors, 2174400100020 which were cooled at a constant temperature to 2174400100021 obtain a good long-term stability of the measuring 2174400100022 chains. 2174400100023 COMMENT The average masses and energies do no vary 2174400100024 much with the resonance energy or spin. 2174400100025 However is statement is subject to precaution 2174400100026 for the case of the spin, since several Pu-239 2174400100027 spin assignments remain questionable. 2174400100028 The 6.5 MeV additional excitation in the 2174400100029 case Pu-239 + N leads only to 1 MeV additional 2174400100030 fragment energy compared to the system Pu-240 s.f. 2174400100031 HISTORY (19810610C) G.C. 2174400100032 (20080116A) Date is corrected 2174400100033 (20080116U) Last checking has been done. 2174400100034 (20220208U) SD: Cosmetic changes in all Subents. 2174400100035 Ref. P,INDC(EUR)-11,31,1977 added. Several Subents were2174400100036 merged (002-004; 005-006; 007-009). 2174400100037 ENDBIB 35 0 2174400100038 NOCOMMON 0 0 2174400100039 ENDSUBENT 38 0 2174400199999 SUBENT 21744002 20220208 23092174400200001 BIB 6 18 2174400200002 REACTION 1(94-PU-240(0,F),PRE,AKE,FF) 2174400200003 2(94-PU-240(0,F),PRE,AKE,LF) 2174400200004 3(94-PU-240(0,F),PRE,AKE,HF) 2174400200005 SAMPLE Pu-F(3), 98.35% enriched, 93 ug/cm**2, 20 mm 2174400200006 diameter evaporated onto a 20 ug/cm**2 thick 2174400200007 poly-imide backing. The total mass of Pu was 292 ug. 2174400200008 COMMENT Since the nu-bar versus mass curve was not 2174400200009 known, it was deduced from the curve for 2174400200010 Pu-239, taking into account the respective 2174400200011 total nu-bar values. This is justified since 2174400200012 for all fissioning isotopes the nu-bar versus 2174400200013 mass distributions are very similar. 2174400200014 STATUS (TABLE) Table II of 79JUELICH,2,143,1979 2174400200015 ERR-ANALYS (DATA-ERR) Contains the statistical error and 2174400200016 the error from the fit. 2174400200017 (ERR-S) Statistical error 2174400200018 HISTORY (20220208A) SD: SF5=PRE added to REACTION code. STATUS 2174400200019 updated. Data from Subents 003, 004 added. 2174400200020 ENDBIB 18 0 2174400200021 NOCOMMON 0 0 2174400200022 DATA 6 1 2174400200023 DATA 1DATA-ERR 1DATA 2ERR-S 2DATA 3ERR-S 32174400200024 MEV MEV MEV MEV MEV MEV 2174400200025 177.3 0.2 103.59 0.13 73.66 0.13 2174400200026 ENDDATA 3 0 2174400200027 ENDSUBENT 26 0 2174400299999 NOSUBENT 21744003 20220208 23092174400300001 NOSUBENT 21744004 20220208 23092174400400001 SUBENT 21744005 20220208 23092174400500001 BIB 6 15 2174400500002 REACTION 1(94-PU-240(0,F),PRE,AP,LF) 2174400500003 2(94-PU-240(0,F),PRE,AP,HF) 2174400500004 SAMPLE Pu-F(3), 98.35% enriched, 93 ug/cm**2, 20 mm 2174400500005 diameter evaporated onto a 20 ug/cm**2 thick 2174400500006 poly-imide backing. The total mass of Pu was 292 ug. 2174400500007 COMMENT Since the nu-bar versus mass curve was not 2174400500008 known, it was deduced from the curve for 2174400500009 Pu-239, taking into account the respective 2174400500010 total nu-bar values. This is justified since 2174400500011 for all fissioning isotopes the nu-bar versus 2174400500012 mass distributions are very similar. 2174400500013 ERR-ANALYS (ERR-S) Statistical error 2174400500014 STATUS (TABLE) Table II of 79JUELICH,2,143,1979 2174400500015 HISTORY (20220208A) SD: SF5=PRE added to REACTION code. 2174400500016 STATUS updated. Data from Subent 006 added. 2174400500017 ENDBIB 15 0 2174400500018 NOCOMMON 0 0 2174400500019 DATA 4 1 2174400500020 DATA 1ERR-S 1DATA 2ERR-S 2 2174400500021 NO-DIM NO-DIM NO-DIM NO-DIM 2174400500022 100.32 0.13 139.68 0.13 2174400500023 ENDDATA 3 0 2174400500024 ENDSUBENT 23 0 2174400599999 NOSUBENT 21744006 20220208 23092174400600001 SUBENT 21744007 20220208 23092174400700001 BIB 8 17 2174400700002 REACTION 1(94-PU-239(N,F),PRE,AKE,FF,MXW) 2174400700003 2(94-PU-239(N,F),PRE,AKE,LF,MXW) 2174400700004 3(94-PU-239(N,F),PRE,AKE,HF,MXW) 2174400700005 INC-SPECT Thermal Maxwellian neutron spectrum. 2174400700006 SAMPLE Pu-O(2), 96.023% enriched, 40 ug/cm**2, 60 mm 2174400700007 diameter sprayed onto a VYNS backing of 50 ug/cm**2 2174400700008 thickness. The total mass of the Pu was 1.13 mg. 2174400700009 FACILITY (REAC,2BLGMOL) 2174400700010 INC-SOURCE (REAC) 2174400700011 ERR-ANALYS (DATA-ERR) Contains the statistical error and 2174400700012 the error from the Gaussian fit. 2174400700013 (ERR-S) Statistical error 2174400700014 STATUS (TABLE) Table II of 79JUELICH,2,143,1979 2174400700015 HISTORY (20080116U) Neutron source data moved from SAN 001 2174400700016 (20220208A) SD: SF5=PRE added to REACTION code. 2174400700017 STATUS updated. ERR-T -> DATA-ERR. Data from 2174400700018 Subents 008, 009 added. 2174400700019 ENDBIB 17 0 2174400700020 COMMON 1 3 2174400700021 EN-DUMMY 2174400700022 EV 2174400700023 2.53E-02 2174400700024 ENDCOMMON 3 0 2174400700025 DATA 6 1 2174400700026 DATA 1DATA-ERR 1DATA 2ERR-S 2DATA 3ERR-S 32174400700027 MEV MEV MEV MEV MEV MEV 2174400700028 178.1 0.1 104.33 0.08 73.73 0.082174400700029 ENDDATA 3 0 2174400700030 ENDSUBENT 29 0 2174400799999 NOSUBENT 21744008 20220208 23092174400800001 NOSUBENT 21744009 20220208 23092174400900001 SUBENT 21744010 20220208 23092174401000001 BIB 8 13 2174401000002 REACTION 1(94-PU-239(N,F),PRE,AP,LF,MXW) 2174401000003 2(94-PU-239(N,F),PRE,AP,HF,MXW) 2174401000004 FACILITY (REAC,2BLGMOL) 2174401000005 INC-SOURCE (REAC) 2174401000006 INC-SPECT Thermal Maxwellian neutron spectrum. 2174401000007 SAMPLE Pu-O(2), 96.023% enriched, 40 ug/cm**2, 60 mm 2174401000008 diameter sprayed onto a VYNS backing of 50 ug/cm**2 2174401000009 thickness. The total mass of the Pu was 1.13 mg. 2174401000010 ERR-ANALYS (ERR-S) Statistical error. 2174401000011 STATUS (TABLE) Table II of 79JUELICH,2,143,1979 2174401000012 HISTORY (20080116U) Neutron source data moved from SAN 001 2174401000013 (20220208A) SD: SF5=PRE added to REACTION code. 2174401000014 STATUS updated. Data from Subent 011 added. 2174401000015 ENDBIB 13 0 2174401000016 COMMON 1 3 2174401000017 EN-DUMMY 2174401000018 EV 2174401000019 2.53E-02 2174401000020 ENDCOMMON 3 0 2174401000021 DATA 4 1 2174401000022 DATA 1ERR-S 1DATA 2ERR-S 2 2174401000023 NO-DIM NO-DIM NO-DIM NO-DIM 2174401000024 100.44 0.08 139.56 0.08 2174401000025 ENDDATA 3 0 2174401000026 ENDSUBENT 25 0 2174401099999 NOSUBENT 21744011 20220208 23092174401100001 SUBENT 21744012 20220208 23092174401200001 BIB 8 21 2174401200002 REACTION (94-PU-239(N,F),PRE,AKE,LF+HF,MSC) 2174401200003 Mean total kinetic energy for 239Pu(n,f) resonances 2174401200004 FACILITY (LINAC,2ZZZGEL) GELINA. 2174401200005 INC-SOURCE (PHOTO) 2174401200006 SAMPLE Pu-O(2), 96.023% enriched, 40 ug/cm**2, 60 mm 2174401200007 diameter sprayed onto a VYNS backing of 50 ug/cm**2 2174401200008 thickness. The total mass of the Pu was 1.13 mg. 2174401200009 An additional run was done with a Pu-F(3) sample. 2174401200010 It was 99.956% enriched, 65 ug/cm**2 with a 2174401200011 diameter of 20 mm, and was prepared by evaporation 2174401200012 onto a 20 ug/cm**2 thick poly-imide backing. 2174401200013 The total mass of the Pu was 204 ug. 2174401200014 FLAG (1.) Poorly separated resonances 2174401200015 the spin of the dominating resonance is taken into 2174401200016 account. 2174401200017 (2.) Contains also the 14.68 eV resonance. 2174401200018 STATUS (TABLE) Table III of 79JUELICH,2,143,1979 2174401200019 ERR-ANALYS (ERR-S) Statistical error. 2174401200020 HISTORY (20080116U) Neutron source data moved from SAN 001 2174401200021 (20220208A) SD: SF5=PRE added; SF8=RES -> MSC in 2174401200022 REACTION code. STATUS updated. 2174401200023 ENDBIB 21 0 2174401200024 NOCOMMON 0 0 2174401200025 DATA 5 16 2174401200026 EN DATA ERR-S SPIN J FLAG 2174401200027 EV MEV MEV NO-DIM NO-DIM 2174401200028 7.82 178.13 0.07 1. 2174401200029 10.93 178.00 0.07 1. 2174401200030 11.89 178.06 0.13 1. 2174401200031 14.31 178.06 0.09 1. 2. 2174401200032 15.46 178.01 0.18 0. 2174401200033 17.66 178.10 0.13 1. 2174401200034 26.24 177.93 0.15 1. 2174401200035 32.31 178.21 0.26 0. 2174401200036 41.50 177.97 0.10 1. 1. 2174401200037 47.60 177.79 0.21 0. 2174401200038 50.00 178.06 0.13 1. 1. 2174401200039 57.44 178.02 0.14 0. 2174401200040 59.22 178.00 0.19 1. 2174401200041 66.00 178.04 0.10 1. 1. 2174401200042 75.00 177.99 0.12 1. 1. 2174401200043 85.00 178.26 0.12 0. 1. 2174401200044 ENDDATA 18 0 2174401200045 ENDSUBENT 44 0 2174401299999 SUBENT 21744013 20220208 23092174401300001 BIB 8 21 2174401300002 REACTION (94-PU-239(N,F),PRE,AP,LF,MSC) 2174401300003 Mean total kinetic energy for 239Pu(n,f) resonances 2174401300004 FACILITY (LINAC,2ZZZGEL) GELINA. 2174401300005 INC-SOURCE (PHOTO) 2174401300006 SAMPLE Pu-O(2), 96.023% enriched, 40 ug/cm**2, 60 mm 2174401300007 diameter sprayed onto a VYNS backing of 50 ug/cm**2 2174401300008 thickness. The total mass of the Pu was 1.13 mg. 2174401300009 An additional run was done with a Pu-F(3) sample. 2174401300010 It was 99.956% enriched, 65 ug/cm**2 with a 2174401300011 diameter of 20 mm, and was prepared by evaporation 2174401300012 onto a 20 ug/cm**2 thick poly-imide backing. 2174401300013 The total mass of the Pu was 204 ug. 2174401300014 FLAG (1.) Poorly separated resonances 2174401300015 the spin of the dominating resonance is taken into 2174401300016 account. 2174401300017 (2.) Contains also the 14.68 eV resonance. 2174401300018 ERR-ANALYS No details or errors given. 2174401300019 STATUS (TABLE) Table III of 79JUELICH,2,143,1979 2174401300020 HISTORY (20080116U) Neutron source data moved from SAN 001 2174401300021 (20220208A) SD: SF5=PRE added; SF8=RES -> MSC in 2174401300022 REACTION code. STATUS updated. 2174401300023 ENDBIB 21 0 2174401300024 NOCOMMON 0 0 2174401300025 DATA 4 16 2174401300026 EN DATA SPIN J FLAG 2174401300027 EV NO-DIM NO-DIM NO-DIM 2174401300028 7.82 100.74 1. 2174401300029 10.93 100.85 1. 2174401300030 11.89 100.94 1. 2174401300031 14.31 100.79 1. 2. 2174401300032 15.46 100.73 0. 2174401300033 17.66 100.84 1. 2174401300034 26.24 100.78 1. 2174401300035 32.31 100.88 0. 2174401300036 41.50 100.77 1. 1. 2174401300037 47.60 100.97 0. 2174401300038 50.00 100.91 1. 1. 2174401300039 57.44 100.83 0. 2174401300040 59.22 100.99 1. 2174401300041 66.00 100.87 1. 1. 2174401300042 75.00 100.64 1. 1. 2174401300043 85.00 100.76 0. 1. 2174401300044 ENDDATA 18 0 2174401300045 ENDSUBENT 44 0 2174401399999 SUBENT 21744014 20220208 23092174401400001 BIB 8 21 2174401400002 REACTION (94-PU-239(N,F),PRE,AP,HF,MSC) 2174401400003 Mean total kinetic energy for 239Pu(n,f) resonances 2174401400004 FACILITY (LINAC,2ZZZGEL) GELINA. 2174401400005 INC-SOURCE (PHOTO) 2174401400006 SAMPLE Pu-O(2), 96.023% enriched, 40 ug/cm**2, 60 mm 2174401400007 diameter sprayed onto a VYNS backing of 50 ug/cm**2 2174401400008 thickness. The total mass of the Pu was 1.13 mg. 2174401400009 An additional run was done with a Pu-F(3) sample. 2174401400010 It was 99.956% enriched, 65 ug/cm**2 with a 2174401400011 diameter of 20 mm, and was prepared by evaporation 2174401400012 onto a 20 ug/cm**2 thick poly-imide backing. 2174401400013 The total mass of the Pu was 204 ug. 2174401400014 FLAG (1.) Poorly separated resonances 2174401400015 the spin of the dominating resonance is taken into 2174401400016 account. 2174401400017 (2.) Contains also the 14.68 eV resonance. 2174401400018 ERR-ANALYS No details or errors given. 2174401400019 STATUS (TABLE) Table III of 79JUELICH,2,143,1979 2174401400020 HISTORY (20080116U) Neutron source data moved from SAN 001 2174401400021 (20220208A) SD: SF5=PRE added; SF8=RES -> MSC in 2174401400022 REACTION code. STATUS updated. 2174401400023 ENDBIB 21 0 2174401400024 NOCOMMON 0 0 2174401400025 DATA 4 16 2174401400026 EN DATA SPIN J FLAG 2174401400027 EV NO-DIM NO-DIM NO-DIM 2174401400028 7.82 139.26 1. 2174401400029 10.93 139.15 1. 2174401400030 11.89 139.06 1. 2174401400031 14.31 139.21 1. 2. 2174401400032 15.46 139.27 0. 2174401400033 17.66 139.16 1. 2174401400034 26.24 139.22 1. 2174401400035 32.31 139.12 0. 2174401400036 41.50 139.23 1. 1. 2174401400037 47.60 139.03 0. 2174401400038 50.00 139.09 1. 2174401400039 57.44 139.17 0. 2174401400040 59.22 139.01 1. 2174401400041 66.00 139.13 1. 1. 2174401400042 75.00 139.36 1. 1. 2174401400043 85.00 139.24 0. 1. 2174401400044 ENDDATA 18 0 2174401400045 ENDSUBENT 44 0 2174401499999 ENDENTRY 14 0 2174499999999