ENTRY 20774 20101112 22252077400000001 SUBENT 20774001 20101112 22252077400100001 BIB 13 76 2077400100002 INSTITUTE (2GERKFK) 2077400100003 REFERENCE (J,NSE,76,(2),148,198011) Main reference. 2077400100004 (W,Kaeppeler,19820309) Private communication with 2077400100005 correction factors for (n,gamma) data. 2077400100006 (W,Wisshak,198011) Preprint of article accepted for 2077400100007 publication in Nucl.Sci.Eng. 2077400100008 (P,NEANDC(E)-212,(5),14,198006) Abstract. 2077400100009 (P,NEANDC(E)-202,(5),15,197906) Graph. 2077400100010 (R,BNL-50991,33,197811) Preliminary data. 2077400100011 (C,78HARWELL,,1108,197809) Preliminary data. 2077400100012 (P,NEANDC(E)-192,(5),23,197804) Preliminary paper about2077400100013 this work. 2077400100014 (W,Wisshak,19781020) Superseded. 2077400100015 REL-REF (I,20765001,K.Wisshak+,J,NSE,66,(3),363,197806) Details2077400100016 on method and apparatus are given. 2077400100017 AUTHOR (K.Wisshak,F.Kaeppeler) 2077400100018 TITLE - The neutron capture and fission cross section of 2077400100019 Am-241 in the energy range from 10 to 250 keV -. 2077400100020 FACILITY (VDG,2GERKFK) Karlsruhe 3 MV pulsed Van de Graaff 2077400100021 accelerator. 2077400100022 SAMPLE .A sintered pellet of 3.6 grams of AmO2, 17.7 mm in 2077400100023 diameter and 2.2 mm in thickness, has been prepared, 2077400100024 which was welded in a 0.15 mm thick stainless steel 2077400100025 canning. 2077400100026 .Part of the measurement were made with a similar 2077400100027 Am-241 sample with double the diameter and 1/3 of 2077400100028 the thickness. 2077400100029 .Different Au-197 and U-235 metal samples plus some 2077400100030 graphite and stainless steel samples were used for 2077400100031 correction and normalization purposes. 2077400100032 METHOD (TOF ) With kinematically collimated neutrons and 2077400100033 moderate energy resolution at short flight paths. 2077400100034 .The flight path was 50 to 66.4 mm long. 2077400100035 .A set of four samples were mounted on a sample changer2077400100036 and cycled automatically into the measuring position. 2077400100037 The cycle time was determined by integrating the beam 2077400100038 current to a preselected charge. 2077400100039 .A dummy sample was used to correct for background 2077400100040 events and a U-235 sample served for normalization 2077400100041 of the fission correction and as a fission standard. 2077400100042 .The capture cross-section ratios of Am versus Au-197 2077400100043 have been measured in four runs of different flight 2077400100044 paths. 2077400100045 DETECTOR (SCIN ) Cylindrical Ne-213 liquid scintillator,100 mm 2077400100046 in diam, 30 mm thick, with a pulse shape 2077400100047 discrimination equipment, see 'a simple pulse shape 2077400100048 discriminator' by R.E.Bandl, KFK-1458. 2077400100049 (MOXR ) with a 25 mm thick graphite converter used for 2077400100050 registration of gamma-rays from capture and fission 2077400100051 events 2077400100052 .both detectors were shielded with lead and were 2077400100053 located at backward angles of 120 deg with respect 2077400100054 to the beam axis.They were completely outside the 2077400100055 neutron cone. 2077400100056 ADD-RES (COMP) Comparison with other data. 2077400100057 ERR-ANALYS (ERR-S) Statistical error. 2077400100058 (ERR-SYS) Total systematical error, details given in 2077400100059 each subwork. 2077400100060 (ERR-T) Total error. 2077400100061 STATUS (TABLE) Data taken from NSE,76,(2),148,1980 and 2077400100062 (n,gamma) data recalculated with correction factors 2077400100063 given in private communication of F.Kaeppeler. 2077400100064 HISTORY (19781023C) 2077400100065 (19781213E) 2077400100066 (19801112A) Updated with preprint of Nucl.Sci.Eng. 2077400100067 Article. Subents 010 - 013 added, 003, 005, 007, 2077400100068 009 - deleted 2077400100069 (19801124E) 2077400100070 (19810306A) Main reference included. 2077400100071 (19810310E) 2077400100072 (19820317A) (n,gamma) data recalculated. 2077400100073 (19820921E) 2077400100074 (20101112A) SD:Updated to new date formats,lower case. 2077400100075 corrected according to last EXFOR rules and Dict. 2077400100076 Code SUM deleted from REACTION (Subents 002,004 2077400100077 006,008,010) 2077400100078 ENDBIB 76 0 2077400100079 NOCOMMON 0 0 2077400100080 ENDSUBENT 79 0 2077400199999 SUBENT 20774002 20101112 22252077400200001 BIB 6 48 2077400200002 REACTION ((95-AM-241(N,G)95-AM-242,,SIG)/ 2077400200003 (79-AU-197(N,G)79-AU-198,,SIG)) 2077400200004 INC-SOURCE (P-LI7) A water cooled metallic Li target, about 2077400200005 0.8 mg/cm2 thick, on a 0.3 mm tantalum backing. 2077400200006 This reaction was used between 10 and 100 keV 2077400200007 neutron energy. 2077400200008 .All neutrons were emitted from the target into a 2077400200009 cone in forward direction with an opening angle 2077400200010 of 120 degrees. 2077400200011 COMMENT .Run with a 66.4 mm flight path. 2077400200012 STATUS (TABLE) Table V in preprint recalculated with new 2077400200013 correction factors. 2077400200014 CORRECTION .For - 2077400200015 - differences in flight path between samples, 2077400200016 - time-dependent and -independent background, 2077400200017 - fission events, 2077400200018 - capture in isotopic impurities 2077400200019 - multiple scattering and self-shielding, 2077400200020 - gamma-ray self-absorption. 2077400200021 .The assumption that the shape of the capture gam- 2077400200022 ma-ray spectra of the heavy nuclei from Au-197 to 2077400200023 Am-241 do not differ too much has been shown to 2077400200024 Be wrong. Correction factors due to deviations 2077400200025 of the detector efficiency from a linear increase 2077400200026 with gamma-ray energy are given in private com- 2077400200027 munication. 2077400200028 ERR-ANALYS .The systematic uncertainties consist of 2077400200029 - Am-241 sample mass 1.5% 2077400200030 - Am-241 flight path sample 2.4-7.5% 2077400200031 - Am-241 flight path backgr. 0.1-1.1% 2077400200032 - Am-241 constant backgr. 0.5-4.8% 2077400200033 - Am-241 fission events 0.2-3.4% 2077400200034 - Am-241 isotope impurities 0.1-0.2% 2077400200035 - ----------- 2077400200036 - total Am-241 sample 2.9-7.8% 2077400200037 - 2077400200038 - Au-197 flight path sample 2.3-7.2% 2077400200039 - Au-197 flight path backgr. 0.1-2.8% 2077400200040 - Au-197 constant backgr. 0.6-3.8% 2077400200041 - ----------- 2077400200042 - total Au-197 sample 2.4-7.9% 2077400200043 - 2077400200044 - multiple scattering 1.4% 2077400200045 - gamma-ray self-absorption 1.0% 2077400200046 - neutron beam intensity 0.4% 2077400200047 - detector efficiency 1.5% 2077400200048 - 2077400200049 - total systematic uncertainty 4.3-11.1% 2077400200050 ENDBIB 48 0 2077400200051 COMMON 1 3 2077400200052 THICKNESS 2077400200053 ATOMS/B 2077400200054 3.2000E-03 2077400200055 ENDCOMMON 3 0 2077400200056 DATA 6 22 2077400200057 EN EN-RSL DATA ERR-S ERR-SYS ERR-T 2077400200058 KEV KEV NO-DIM PER-CENT PER-CENT PER-CENT 2077400200059 1.3900E+01 6.0000E-01 3.5600E+00 9.3000E+00 8.7000E+00 1.2700E+012077400200060 1.4800E+01 7.0000E-01 3.3500E+00 8.2000E+00 7.8000E+00 1.1300E+012077400200061 1.5700E+01 7.0000E-01 3.7800E+00 6.8000E+00 7.2000E+00 9.9000E+002077400200062 1.6600E+01 8.0000E-01 3.6900E+00 5.8000E+00 7.0000E+00 9.1000E+002077400200063 1.7700E+01 9.0000E-01 3.6800E+00 5.2000E+00 6.1000E+00 8.0000E+002077400200064 1.8900E+01 9.0000E-01 3.9500E+00 4.7000E+00 5.6000E+00 7.3000E+002077400200065 2.0200E+01 1.0000E+00 3.9500E+00 4.3000E+00 5.5000E+00 7.0000E+002077400200066 2.1600E+01 1.1000E+00 4.0400E+00 3.8000E+00 5.3000E+00 6.5000E+002077400200067 2.3200E+01 1.2000E+00 4.4400E+00 3.3000E+00 5.2000E+00 6.2000E+002077400200068 2.5000E+01 1.3000E+00 4.1200E+00 2.9000E+00 4.5000E+00 5.4000E+002077400200069 2.7000E+01 1.5000E+00 4.1900E+00 2.6000E+00 4.4000E+00 5.1000E+002077400200070 2.9300E+01 1.7000E+00 4.2800E+00 2.4000E+00 4.4000E+00 5.0000E+002077400200071 3.1800E+01 1.8000E+00 4.5100E+00 2.1000E+00 4.3000E+00 4.8000E+002077400200072 3.4700E+01 2.0000E+00 4.5300E+00 2.0000E+00 4.3000E+00 4.7000E+002077400200073 3.8000E+01 2.3000E+00 4.3400E+00 1.8000E+00 4.3000E+00 4.7000E+002077400200074 4.1800E+01 2.6000E+00 4.4700E+00 1.7000E+00 4.3000E+00 4.6000E+002077400200075 4.6200E+01 3.0000E+00 4.7700E+00 1.7000E+00 4.3000E+00 4.6000E+002077400200076 5.1400E+01 3.5000E+00 4.8000E+00 1.7000E+00 4.3000E+00 4.6000E+002077400200077 5.7400E+01 4.0000E+00 4.7200E+00 1.6000E+00 4.3000E+00 4.6000E+002077400200078 6.4700E+01 4.7000E+00 4.8700E+00 1.6000E+00 4.3000E+00 4.6000E+002077400200079 7.3300E+01 5.6000E+00 4.7700E+00 1.7000E+00 5.1000E+00 5.4000E+002077400200080 8.3800E+01 6.7000E+00 5.2700E+00 2.0000E+00 1.1100E+01 1.1300E+012077400200081 ENDDATA 24 0 2077400200082 ENDSUBENT 81 0 2077400299999 SUBENT 20774003 20101112 22252077400300001 BIB 5 12 2077400300002 REACTION (95-AM-241(N,G)95-AM-242,,SIG) 2077400300003 MONITOR (79-AU-197(N,G)79-AU-198,,SIG)Data taken from ENDF/B-IV2077400300004 extrapolated to the energy values of present work. 2077400300005 COMMENT .Run with a 66.4 mm flight path. 2077400300006 STATUS (DEP,20774002) 2077400300007 (PRELM) Data taken from priv. communication,1978/10/20.2077400300008 (SPSDD) superseded by new main reference, where it is 2077400300009 said that the absolute cross sections were calculated 2077400300010 from smooth ENDF/B-IV data. Therefore, any structure 2077400300011 in these values might be partially due to structure 2077400300012 in the main reference cross section. Data deleted. 2077400300013 HISTORY (19801112D) Superseded by new main reference. 2077400300014 ENDBIB 12 0 2077400300015 NOCOMMON 0 0 2077400300016 NODATA 0 0 2077400300017 ENDSUBENT 16 0 2077400399999 SUBENT 20774004 20101112 22252077400400001 BIB 6 48 2077400400002 REACTION ((95-AM-241(N,G)95-AM-242,,SIG)/ 2077400400003 (79-AU-197(N,G)79-AU-198,,SIG)) 2077400400004 INC-SOURCE (P-LI7) A water cooled metallic Li target, about 2077400400005 0.8 mg/cm2 thick, on a 0.3 mm tantalum backing. 2077400400006 This reaction was used between 10 and 100 keV 2077400400007 neutron energy. 2077400400008 .All neutrons were emitted from the target into a 2077400400009 cone in forward direction with an opening angle 2077400400010 of 120 degrees. 2077400400011 COMMENT .Run with 64.0 mm flight path. 2077400400012 STATUS (TABLE) Table V in preprint recalculated with new 2077400400013 correction factors. 2077400400014 CORRECTION .For - 2077400400015 - differences in flight path between samples, 2077400400016 - time-dependent and -independent background, 2077400400017 - fission events, 2077400400018 - capture in isotopic impurities 2077400400019 - multiple scattering and self-shielding, 2077400400020 - gamma-ray self-absorption. 2077400400021 .The assumption that the shape of the capture gam- 2077400400022 ma-ray spectra of the heavy nuclei from Au-197 to 2077400400023 Am-241 do not differ too much has been shown to 2077400400024 Be wrong. Correction factors due to deviations 2077400400025 of the detector efficiency from a linear increase 2077400400026 with gamma-ray energy are given in private com- 2077400400027 munication. 2077400400028 ERR-ANALYS .The systematic uncertainties consist of 2077400400029 - Am-241 sample mass 1.5% 2077400400030 - Am-241 flight path sample 2.4-7.6% 2077400400031 - Am-241 flight path backgr. 0.1-1.1% 2077400400032 - Am-241 constant backgr. 0.2-1.6% 2077400400033 - Am-241 fission events 0.2-2.4% 2077400400034 - Am-241 isotope impurities 0.1-0.2% 2077400400035 - ----------- 2077400400036 - total Am-241 sample 2.9-7.8% 2077400400037 - 2077400400038 - Au-197 flight path sample 2.3-7.3% 2077400400039 - Au-197 flight path backgr. 0.2-2.5% 2077400400040 - Au-197 constant backgr. 0.4-2.4% 2077400400041 - ----------- 2077400400042 - total Au-197 sample 2.3-7.7% 2077400400043 - 2077400400044 - multiple scattering 1.4% 2077400400045 - gamma-ray self-absorption 1.0% 2077400400046 - neutron beam intensity 0.4% 2077400400047 - detector efficiency 1.5% 2077400400048 - 2077400400049 - total systematic uncertainty 4.3-11.1% 2077400400050 ENDBIB 48 0 2077400400051 COMMON 1 3 2077400400052 THICKNESS 2077400400053 ATOMS/B 2077400400054 3.2000E-03 2077400400055 ENDCOMMON 3 0 2077400400056 DATA 6 21 2077400400057 EN EN-RSL DATA ERR-S ERR-SYS ERR-T 2077400400058 KEV KEV NO-DIM PER-CENT PER-CENT PER-CENT 2077400400059 1.4300E+01 7.0000E-01 3.5500E+00 7.0000E+00 6.3000E+00 9.4000E+002077400400060 1.5200E+01 8.0000E-01 3.5800E+00 5.6000E+00 5.6000E+00 7.9000E+002077400400061 1.6100E+01 8.0000E-01 3.6700E+00 5.1000E+00 5.4000E+00 7.4000E+002077400400062 1.7200E+01 9.0000E-01 3.6800E+00 3.9000E+00 5.4000E+00 6.7000E+002077400400063 1.8400E+01 1.0000E+00 3.6900E+00 3.6000E+00 5.3000E+00 6.4000E+002077400400064 1.9700E+01 1.0000E+00 4.0800E+00 3.4000E+00 5.3000E+00 6.3000E+002077400400065 2.1200E+01 1.1000E+00 3.9800E+00 2.9000E+00 5.2000E+00 5.9000E+002077400400066 2.2800E+01 1.2000E+00 4.3500E+00 2.5000E+00 5.1000E+00 5.7000E+002077400400067 2.4600E+01 1.4000E+00 4.0700E+00 2.2000E+00 4.7000E+00 5.2000E+002077400400068 2.6600E+01 1.5000E+00 4.0900E+00 2.1000E+00 4.7000E+00 5.2000E+002077400400069 2.8900E+01 1.7000E+00 4.1800E+00 1.9000E+00 4.7000E+00 5.1000E+002077400400070 3.1600E+01 1.9000E+00 4.5400E+00 1.7000E+00 4.6000E+00 4.9000E+002077400400071 3.4600E+01 2.1000E+00 4.4600E+00 1.6000E+00 4.4000E+00 4.7000E+002077400400072 3.8000E+01 2.4000E+00 4.5000E+00 1.5000E+00 4.4000E+00 4.7000E+002077400400073 4.2100E+01 2.7000E+00 4.5800E+00 1.4000E+00 4.3000E+00 4.5000E+002077400400074 4.6800E+01 3.2000E+00 4.7100E+00 1.4000E+00 4.3000E+00 4.5000E+002077400400075 5.2300E+01 3.7000E+00 4.8300E+00 1.3000E+00 4.3000E+00 4.5000E+002077400400076 5.8800E+01 4.3000E+00 4.8400E+00 1.2000E+00 4.3000E+00 4.5000E+002077400400077 6.6700E+01 5.1000E+00 4.8300E+00 1.2000E+00 4.3000E+00 4.5000E+002077400400078 7.6300E+01 6.1000E+00 4.9700E+00 1.3000E+00 5.9000E+00 6.0000E+002077400400079 8.8100E+01 7.4000E+00 5.2900E+00 1.7000E+00 1.1200E+01 1.1300E+012077400400080 ENDDATA 23 0 2077400400081 ENDSUBENT 80 0 2077400499999 SUBENT 20774005 20101112 22252077400500001 BIB 5 13 2077400500002 REACTION (95-AM-241(N,G)95-AM-242,,SIG) 2077400500003 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) Data taken from 2077400500004 ENDF/B-IV and extrapolated to the energy values of 2077400500005 present work. 2077400500006 COMMENT .Run with 64.0 mm flight path. 2077400500007 STATUS (DEP,20774004) 2077400500008 (PRELM) Data taken from priv. communication,1978/10/20.2077400500009 (SPSDD) superseded by new main reference, where it is 2077400500010 said that the absolute cross sections were calculated 2077400500011 from smooth ENDF/B-IV data. Therefore, any structure 2077400500012 in these values might be partially due to structure 2077400500013 in the main reference cross section. Data deleted. 2077400500014 HISTORY (19801112D) 2077400500015 ENDBIB 13 0 2077400500016 NOCOMMON 0 0 2077400500017 NODATA 0 0 2077400500018 ENDSUBENT 17 0 2077400599999 SUBENT 20774006 20101112 22252077400600001 BIB 6 48 2077400600002 REACTION ((95-AM-241(N,G)95-AM-242,,SIG)/ 2077400600003 (79-AU-197(N,G)79-AU-198,,SIG)) 2077400600004 INC-SOURCE (P-LI7) A water cooled metallic Li target, about 2077400600005 0.8 mg/cm2 thick, on a 0.3 mm tantalum backing. 2077400600006 This reaction was used between 10 and 100 keV 2077400600007 neutron energy. 2077400600008 .All neutrons were emitted from the target into a 2077400600009 cone in forward direction with an opening angle 2077400600010 of 120 degrees. 2077400600011 COMMENT .Run with a 50.0 mm flight path. 2077400600012 STATUS (TABLE) Table V in preprint recalculated with new 2077400600013 correction factors. 2077400600014 CORRECTION .For - 2077400600015 - differences in flight path between samples, 2077400600016 - time-dependent and -independent background, 2077400600017 - fission events, 2077400600018 - capture in isotopic impurities 2077400600019 - multiple scattering and self-shielding, 2077400600020 - gamma-ray self-absorption. 2077400600021 .The assumption that the shape of the capture gam- 2077400600022 ma-ray spectra of the heavy nuclei from Au-197 to 2077400600023 Am-241 do not differ too much has been shown to 2077400600024 Be wrong. Correction factors due to deviations 2077400600025 of the detector efficiency from a linear increase 2077400600026 with gamma-ray energy are given in private com- 2077400600027 munication. 2077400600028 ERR-ANALYS .The systematic uncertainties consist of 2077400600029 - Am-241 sample mass 1.5% 2077400600030 - Am-241 flight path sample 3.0-8.5% 2077400600031 - Am-241 flight path backgr. 0.1-0.6% 2077400600032 - Am-241 constant backgr. 0.4-5.1% 2077400600033 - Am-241 fission events 0.1-0.8% 2077400600034 - Am-241 isotope impurities 0.1-0.2% 2077400600035 - ----------- 2077400600036 - total Am-241 sample 3.4-8.6% 2077400600037 - 2077400600038 - Au-197 flight path sample 3.0-8.3% 2077400600039 - Au-197 flight path backgr. 0.1-1.3% 2077400600040 - Au-197 constant backgr. 0.5-5.0% 2077400600041 - ----------- 2077400600042 - total Au-197 sample 3.1-8.4% 2077400600043 - 2077400600044 - multiple scattering 1.4% 2077400600045 - gamma-ray self-absorption 1.0% 2077400600046 - neutron beam intensity 0.4% 2077400600047 - detector efficiency 1.5% 2077400600048 - 2077400600049 - total systematic uncertainty 5.0-12.2% 2077400600050 ENDBIB 48 0 2077400600051 COMMON 1 3 2077400600052 THICKNESS 2077400600053 ATOMS/B 2077400600054 3.2000E-03 2077400600055 ENDCOMMON 3 0 2077400600056 DATA 6 21 2077400600057 EN EN-RSL DATA ERR-S ERR-SYS ERR-T 2077400600058 KEV KEV NO-DIM PER-CENT PER-CENT PER-CENT 2077400600059 1.0400E+01 6.0000E-01 3.1600E+00 8.2000E+00 1.0200E+01 1.3100E+012077400600060 1.1100E+01 7.0000E-01 2.8600E+00 7.0000E+00 1.0000E+01 1.2200E+012077400600061 1.1900E+01 7.0000E-01 2.9900E+00 6.7000E+00 9.3000E+00 1.1500E+012077400600062 1.2800E+01 8.0000E-01 3.1800E+00 6.1000E+00 8.7000E+00 1.0600E+012077400600063 1.3700E+01 8.0000E-01 3.5000E+00 5.5000E+00 8.4000E+00 1.0000E+012077400600064 1.4800E+01 9.0000E-01 3.4800E+00 4.6000E+00 7.9000E+00 9.1000E+002077400600065 1.6000E+01 1.0000E+00 3.5600E+00 4.1000E+00 7.6000E+00 8.6000E+002077400600066 1.7300E+01 1.1000E+00 3.7000E+00 3.5000E+00 6.4000E+00 7.3000E+002077400600067 1.8800E+01 1.2000E+00 3.8500E+00 3.1000E+00 6.2000E+00 6.9000E+002077400600068 2.0600E+01 1.4000E+00 3.9900E+00 2.8000E+00 5.6000E+00 6.3000E+002077400600069 2.2500E+01 1.5000E+00 4.2600E+00 2.4000E+00 5.3000E+00 5.8000E+002077400600070 2.4800E+01 1.7000E+00 4.1000E+00 2.1000E+00 5.2000E+00 5.6000E+002077400600071 2.7500E+01 2.0000E+00 4.0100E+00 1.8000E+00 5.2000E+00 5.5000E+002077400600072 3.0600E+01 2.3000E+00 4.3100E+00 1.7000E+00 5.1000E+00 5.4000E+002077400600073 3.4200E+01 2.6000E+00 4.3900E+00 1.5000E+00 5.1000E+00 5.3000E+002077400600074 3.8600E+01 3.1000E+00 4.3000E+00 1.4000E+00 5.0000E+00 5.2000E+002077400600075 4.3800E+01 3.6000E+00 4.6600E+00 1.3000E+00 5.0000E+00 5.2000E+002077400600076 5.0200E+01 4.4000E+00 4.7600E+00 1.3000E+00 5.0000E+00 5.2000E+002077400600077 5.8000E+01 5.3000E+00 4.8900E+00 1.3000E+00 5.0000E+00 5.2000E+002077400600078 6.7900E+01 6.7000E+00 4.7500E+00 1.3000E+00 6.5000E+00 6.6000E+002077400600079 8.0700E+01 8.4000E+00 5.0000E+00 1.6000E+00 1.2200E+01 1.2300E+012077400600080 ENDDATA 23 0 2077400600081 ENDSUBENT 80 0 2077400699999 SUBENT 20774007 20101112 22252077400700001 BIB 5 12 2077400700002 REACTION (95-AM-241(N,G)95-AM-242,,SIG) 2077400700003 MONITOR (79-AU-197(N,G)79-AU-198,,SIG)Data taken from ENDF/B-IV2077400700004 extrapolated to the energy values of present work. 2077400700005 COMMENT .Run with a 50. mm flight path. 2077400700006 STATUS (DEP,20774006) 2077400700007 (PRELM) Data taken from priv. communication,1978/10/20.2077400700008 (SPSDD) superseded by new main reference, where it is 2077400700009 said that the absolute cross sections were calculated 2077400700010 from smooth ENDF/B-IV data. Therefore, any structure 2077400700011 in these values might be partially due to structure 2077400700012 in the main reference cross section. Data deleted. 2077400700013 HISTORY (19801112D) Superseded by new main reference. 2077400700014 ENDBIB 12 0 2077400700015 NOCOMMON 0 0 2077400700016 NODATA 0 0 2077400700017 ENDSUBENT 16 0 2077400799999 SUBENT 20774008 20101112 22252077400800001 BIB 6 52 2077400800002 REACTION ((95-AM-241(N,G)95-AM-242,,SIG)/ 2077400800003 (79-AU-197(N,G)79-AU-198,,SIG)) 2077400800004 INC-SOURCE (P-T ) The water-cooled neutron target consisted of 2077400800005 a tritium loaded titanium layer(12.5mm diam,2.1micron 2077400800006 thick),evaporated onto a 0.3 mm thick tungsten 2077400800007 backing and protected by an evaporated layer of 2077400800008 50 micrograms/cm**2 aluminium. 2077400800009 The specific target activity was 0.8 Ci/cm2. 2077400800010 the energy range of neutrons was between 50 and 2077400800011 250 keV. 2077400800012 .All neutrons were emitted from the target into a 2077400800013 cone in forward direction with an opening angle 2077400800014 of 120 degrees. 2077400800015 COMMENT .Run with a 65.3 mm flight path. 2077400800016 STATUS (TABLE) Table V in preprint recalculated with new 2077400800017 correction factors. 2077400800018 CORRECTION .For - 2077400800019 - differences in flight path between samples, 2077400800020 - time-dependent and -independent background, 2077400800021 - fission events, 2077400800022 - capture in isotopic impurities 2077400800023 - multiple scattering and self-shielding, 2077400800024 - gamma-ray self-absorption. 2077400800025 .The assumption that the shape of the capture gam- 2077400800026 ma-ray spectra of the heavy nuclei from Au-197 to 2077400800027 Am-241 do not differ too much has been shown to 2077400800028 be wrong. Correction factors due to deviations 2077400800029 of the detector efficiency from a linear increase 2077400800030 with gamma-ray energy are given in private com- 2077400800031 munication. 2077400800032 ERR-ANALYS .The systematic uncertainties consist of 2077400800033 - Am-241 sample mass 1.5% 2077400800034 - Am-241 flight path sample 2.4-8.7% 2077400800035 - Am-241 flight path backgr. 0.2-2.6% 2077400800036 - Am-241 constant backgr. 0.7-2.3% 2077400800037 - Am-241 fission events 0.2-0.5% 2077400800038 - Am-241 isotope impurities 0.1% 2077400800039 - ----------- 2077400800040 - total Am-241 sample 2.9-9.3% 2077400800041 - 2077400800042 - Au-197 flight path sample 2.4-8.3% 2077400800043 - Au-197 flight path backgr. 0.5-5.4% 2077400800044 - Au-197 constant backgr. 1.2-4.0% 2077400800045 - ----------- 2077400800046 - total Au-197 sample 2.7-10.1% 2077400800047 - 2077400800048 - multiple scattering 1.4% 2077400800049 - gamma-ray self-absorption 1.0% 2077400800050 - neutron beam intensity 0.4% 2077400800051 - detector efficiency 1.5% 2077400800052 - 2077400800053 - total systematic uncertainty 4.5-13.9% 2077400800054 ENDBIB 52 0 2077400800055 COMMON 1 3 2077400800056 THICKNESS 2077400800057 ATOMS/B 2077400800058 3.2000E-03 2077400800059 ENDCOMMON 3 0 2077400800060 DATA 6 8 2077400800061 EN EN-RSL DATA ERR-S ERR-SYS ERR-T 2077400800062 KEV KEV NO-DIM PER-CENT PER-CENT PER-CENT 2077400800063 5.8100E+01 4.0000E+00 4.8700E+00 7.3000E+00 6.4000E+00 9.7000E+002077400800064 6.7400E+01 4.9000E+00 4.6900E+00 6.3000E+00 5.8000E+00 8.6000E+002077400800065 7.8900E+01 6.1000E+00 4.6900E+00 5.3000E+00 5.4000E+00 7.6000E+002077400800066 9.3900E+01 7.7000E+00 4.5600E+00 4.2000E+00 4.9000E+00 6.5000E+002077400800067 1.1340E+02 1.0200E+01 5.0400E+00 3.6000E+00 4.7000E+00 5.9000E+002077400800068 1.3980E+02 1.3700E+01 4.6300E+00 2.8000E+00 4.5000E+00 5.3000E+002077400800069 1.7660E+02 1.9300E+01 4.5100E+00 2.6000E+00 4.5000E+00 5.2000E+002077400800070 2.3010E+02 2.8400E+01 4.2000E+00 4.0000E+00 1.3900E+01 1.4500E+012077400800071 ENDDATA 10 0 2077400800072 ENDSUBENT 71 0 2077400899999 SUBENT 20774009 20101112 22252077400900001 BIB 5 12 2077400900002 REACTION (95-AM-241(N,G)95-AM-242,,SIG) 2077400900003 MONITOR (79-AU-197(N,G)79-AU-198,,SIG)Data taken from ENDF/B-IV2077400900004 extrapolated to the energy values of present work. 2077400900005 COMMENT .Run with a 64.2 mm flight path. 2077400900006 STATUS (DEP,20774008) 2077400900007 (PRELM) Data taken from priv. communication,1978/10/20.2077400900008 (SPSDD) superseded by new main reference, where it is 2077400900009 said that the absolute cross sections were calculated 2077400900010 from smooth ENDF/B-IV data. Therefore, any structure 2077400900011 in these values might be partially due to structure 2077400900012 in the main reference cross section. Data deleted. 2077400900013 HISTORY (19801112D) Superseded by new main reference. 2077400900014 ENDBIB 12 0 2077400900015 NOCOMMON 0 0 2077400900016 NODATA 0 0 2077400900017 ENDSUBENT 16 0 2077400999999 SUBENT 20774010 20101112 22252077401000001 BIB 7 49 2077401000002 REACTION ((95-AM-241(N,G)95-AM-242,,SIG)/ 2077401000003 (79-AU-197(N,G)79-AU-198,,SIG)) 2077401000004 INC-SOURCE (P-LI7) A water cooled metallic Li target, about 2077401000005 0.8 mg/cm2 thick, on a 0.3 mm tantalum backing. 2077401000006 This reaction was used between 10 and 100 keV 2077401000007 neutron energy. 2077401000008 .All neutrons were emitted from the target into a 2077401000009 cone in forward direction with an opening angle 2077401000010 of 120 degrees. 2077401000011 COMMENT .Run with a 64.0 mm flight path. 2077401000012 STATUS (TABLE) Table V in preprint recalculated with new 2077401000013 correction factors. 2077401000014 CORRECTION .For - 2077401000015 - differences in flight path between samples, 2077401000016 - time-dependent and -independent background, 2077401000017 - fission events, 2077401000018 - capture in isotopic impurities 2077401000019 - multiple scattering and self-shielding, 2077401000020 - gamma-ray self-absorption. 2077401000021 .The assumption that the shape of the capture gam- 2077401000022 ma-ray spectra of the heavy nuclei from Au-197 to 2077401000023 Am-241 do not differ too much has been shown to 2077401000024 be wrong. Correction factors due to deviations 2077401000025 of the detector efficiency from a linear increase 2077401000026 with gamma-ray energy are given in private com- 2077401000027 munication. 2077401000028 ERR-ANALYS .The systematic uncertainties consist of 2077401000029 - Am-241 sample mass 1.6% 2077401000030 - Am-241 flight path sample 2.4-8.8% 2077401000031 - Am-241 flight path backgr. 0.3-2.6% 2077401000032 - Am-241 constant backgr. 0.6-4.2% 2077401000033 - Am-241 fission events 0.1-0.3% 2077401000034 - Am-241 isotope impurities 0.1% 2077401000035 - ----------- 2077401000036 - total Am-241 sample 3.1-9.3% 2077401000037 - 2077401000038 - Au-197 flight path sample 2.4-8.0% 2077401000039 - Au-197 flight path backgr. 0.1-0.7% 2077401000040 - Au-197 constant backgr. 0.4-2.1% 2077401000041 - ----------- 2077401000042 - total Au-197 sample 2.6-8.1% 2077401000043 - 2077401000044 - multiple scattering 1.4% 2077401000045 - gamma-ray self-absorption 1.0% 2077401000046 - neutron beam intensity 0.4% 2077401000047 - detector efficiency 1.5% 2077401000048 - 2077401000049 - total systematic uncertainty 4.7-12.% 2077401000050 HISTORY (19801112C) 2077401000051 ENDBIB 49 0 2077401000052 COMMON 1 3 2077401000053 THICKNESS 2077401000054 ATOMS/B 2077401000055 1.0000E-03 2077401000056 ENDCOMMON 3 0 2077401000057 DATA 6 19 2077401000058 EN EN-RSL DATA ERR-S ERR-SYS ERR-T 2077401000059 KEV KEV NO-DIM PER-CENT PER-CENT PER-CENT 2077401000060 1.6400E+01 8.0000E-01 3.3800E+00 9.0000E+00 7.9000E+00 1.2000E+012077401000061 1.7500E+01 9.0000E-01 3.8300E+00 7.2000E+00 7.1000E+00 1.0100E+012077401000062 1.8700E+01 9.0000E-01 3.9900E+00 6.7000E+00 7.1000E+00 9.8000E+002077401000063 2.0000E+01 1.0000E+00 3.5100E+00 6.7000E+00 7.0000E+00 9.7000E+002077401000064 2.1500E+01 1.1000E+00 4.0100E+00 5.6000E+00 6.8000E+00 8.8000E+002077401000065 2.3200E+01 1.2000E+00 4.3300E+00 4.8000E+00 6.4000E+00 8.0000E+002077401000066 2.5000E+01 1.4000E+00 3.9500E+00 4.6000E+00 6.1000E+00 7.6000E+002077401000067 2.7100E+01 1.5000E+00 3.8600E+00 4.1000E+00 6.0000E+00 7.3000E+002077401000068 2.9500E+01 1.7000E+00 4.4300E+00 3.5000E+00 5.4000E+00 6.4000E+002077401000069 3.2200E+01 1.9000E+00 4.4900E+00 3.3000E+00 5.3000E+00 6.2000E+002077401000070 3.5300E+01 2.1000E+00 4.3100E+00 3.0000E+00 5.0000E+00 5.8000E+002077401000071 3.8800E+01 2.4000E+00 4.2800E+00 2.8000E+00 5.0000E+00 5.7000E+002077401000072 4.2900E+01 2.7000E+00 4.5500E+00 2.5000E+00 4.9000E+00 5.5000E+002077401000073 4.7600E+01 3.2000E+00 4.6900E+00 2.3000E+00 4.8000E+00 5.3000E+002077401000074 5.3300E+01 3.7000E+00 4.7900E+00 2.1000E+00 4.7000E+00 5.2000E+002077401000075 5.9900E+01 4.4000E+00 4.7600E+00 2.0000E+00 4.7000E+00 5.1000E+002077401000076 6.8000E+01 5.2000E+00 4.5900E+00 1.9000E+00 4.7000E+00 5.1000E+002077401000077 7.7700E+01 6.1000E+00 4.5400E+00 2.1000E+00 6.5000E+00 6.8000E+002077401000078 8.9700E+01 7.5000E+00 4.3700E+00 3.0000E+00 1.2600E+01 1.3000E+012077401000079 ENDDATA 21 0 2077401000080 ENDSUBENT 79 0 2077401099999 SUBENT 20774011 20101112 22252077401100001 BIB 8 54 2077401100002 REACTION ((95-AM-241(N,F),,SIG)/(92-U-235(N,F),,SIG)) 2077401100003 INC-SOURCE (P-LI7) A water cooled metallic Li target, about 2077401100004 0.8 mg/cm2 thick, on a 0.3 mm tantalum backing. 2077401100005 This reaction was used between 10 and 100 keV 2077401100006 neutron energy. 2077401100007 .All neutrons were emitted from the target into a 2077401100008 cone in forward direction with an opening angle 2077401100009 of 120 degrees. 2077401100010 MONITOR ((92-U-235(N,F),,NU)/(95-AM-241(N,F),,NU)) Thermal 2077401100011 value taken. 2077401100012 COMMENT .Averaged data from 3 runs. 2077401100013 STATUS (TABLE) Table VI in preprint. 2077401100014 HISTORY (19801112C) 2077401100015 CORRECTION .For - 2077401100016 - differences in flight path between samples, 2077401100017 - time-dependent and -independent background, 2077401100018 - time distribution of fission neutrons, 2077401100019 - fission in isotopic impurities, 2077401100020 - neutron scattering in the stainless steel canning, 2077401100021 - fraction of fission neutrons above the threshold, 2077401100022 - multiple scattering and self-shielding, 2077401100023 ERR-ANALYS .Data given are averaged data from runs number 1,2 2077401100024 and 3. the systematic uncertainties consist of the 2077401100025 following contributions, where the numbers in 2077401100026 parenthesis refer to the different runs. 2077401100027 - Sample mass (all) 1.5% 2077401100028 - flight path sample (1) 3.0- 8.1% 2077401100029 (2) 3.0- 6.6% 2077401100030 (3) 4.0- 8.8% 2077401100031 - constant backgr. Sample (1) 2.0-27.8% 2077401100032 (2) 3.1-17.0% 2077401100033 (3) 2.2-18.7% 2077401100034 - flight path ref. Sample (1) 2.3- 3.7% 2077401100035 (2) 2.3- 3.7% 2077401100036 (3) 3.0- 4.1% 2077401100037 - const. Backgr. Ref. Sample(1) 0.0- 0.4% 2077401100038 (2) 0.2- 0.5% 2077401100039 (3) 0.0- 0.2% 2077401100040 - unfolding procedure (1) 10.1-13.0% 2077401100041 (2) 10.4-12.0% 2077401100042 (3) 9.3-14.5% 2077401100043 - isotopic impurities (1) 5.7- 8.6% 2077401100044 (2) 5.5- 8.8% 2077401100045 (3) 4.6-10.3% 2077401100046 - fraction of fission events 2077401100047 - above threshold (all) 3.0% 2077401100048 - scattering in canning (all) 0.0- 3.0% 2077401100049 - multiple scattering and 2077401100050 self-shielding (all) 1.4% 2077401100051 - neutron flux (all) 0.4% 2077401100052 ---------- 2077401100053 - total systematic error (1) 13.2-31.4% 2077401100054 (2) 13.1-23.3% 2077401100055 (3) 15.8-23.0% 2077401100056 ENDBIB 54 0 2077401100057 COMMON 3 3 2077401100058 EN-NRM MONIT THICKNESS 2077401100059 EV NO-DIM ATOMS/B 2077401100060 2.5300E-02 7.7200E-01 3.2000E-03 2077401100061 ENDCOMMON 3 0 2077401100062 DATA 6 10 2077401100063 EN-MIN EN-MAX DATA ERR-S ERR-SYS ERR-T 2077401100064 KEV KEV NO-DIM PER-CENT PER-CENT PER-CENT 2077401100065 1.0000E+01 1.5000E+01 8.3000E-03 1.0700E+01 2.4800E+01 2.7000E+012077401100066 1.5000E+01 2.0000E+01 6.5000E-03 1.0000E+01 2.0900E+01 2.3200E+012077401100067 2.0000E+01 2.5000E+01 7.2000E-03 4.7000E+00 1.5000E+01 1.5700E+012077401100068 2.5000E+01 3.0000E+01 6.5000E-03 4.4000E+00 1.5800E+01 1.6400E+012077401100069 3.0000E+01 4.0000E+01 7.3000E-03 2.7000E+00 1.4900E+01 1.5100E+012077401100070 4.0000E+01 5.0000E+01 7.8000E-03 2.6000E+00 1.5000E+01 1.5200E+012077401100071 5.0000E+01 6.0000E+01 7.7000E-03 2.8000E+00 1.4500E+01 1.4800E+012077401100072 6.0000E+01 7.0000E+01 8.8000E-03 2.6000E+00 1.3300E+01 1.3600E+012077401100073 7.0000E+01 8.0000E+01 1.0000E-02 2.9000E+00 1.4200E+01 1.4500E+012077401100074 8.0000E+01 9.0000E+01 1.0400E-02 4.6000E+00 1.4600E+01 1.5300E+012077401100075 ENDDATA 12 0 2077401100076 ENDSUBENT 75 0 2077401199999 SUBENT 20774012 20101112 22252077401200001 BIB 8 35 2077401200002 REACTION ((95-AM-241(N,F),,SIG)/(92-U-235(N,F),,SIG)) 2077401200003 INC-SOURCE (P-LI7) A water cooled metallic Li target, about 2077401200004 0.8 mg/cm2 thick, on a 0.3 mm tantalum backing. 2077401200005 This reaction was used between 10 and 100 keV 2077401200006 neutron energy. 2077401200007 .All neutrons were emitted from the target into a 2077401200008 cone in forward direction with an opening angle 2077401200009 of 120 degrees. 2077401200010 MONITOR ((92-U-235(N,F),,NU)/(95-AM-241(N,F),,NU)) Thermal 2077401200011 value taken. 2077401200012 COMMENT .Run at 64.0 mm flight path. 2077401200013 STATUS (TABLE) Table VI in preprint. 2077401200014 HISTORY (19801112C) 2077401200015 CORRECTION .For - 2077401200016 - differences in flight path between samples, 2077401200017 - time-dependent and -independent background, 2077401200018 - time distribution of fission neutrons, 2077401200019 - fission in isotopic impurities, 2077401200020 - neutron scattering in the stainless steel canning, 2077401200021 - fraction of fission neutrons above the threshold, 2077401200022 ERR-ANALYS .The systematic uncertainties consist of 2077401200023 - sample mass 1.6% 2077401200024 - flight path sample 2.3- 3.7% 2077401200025 - constant backgr. Sample 3.4-13.1% 2077401200026 - flight path reference sample 2.3- 3.7% 2077401200027 - constant backgr. Ref. Sample 0.0- 0.1% 2077401200028 - unfolding procedure 5. % 2077401200029 - fraction of fission events 2077401200030 - above threshold 3.0% 2077401200031 - scattering in canning 0.0- 2.0% 2077401200032 - multiple scattering and 2077401200033 self-shielding 1.4% 2077401200034 - neutron flux 0.4% 2077401200035 ---------- 2077401200036 - total systematic error 7.5-15.0% 2077401200037 ENDBIB 35 0 2077401200038 COMMON 3 3 2077401200039 EN-NRM MONIT THICKNESS 2077401200040 EV NO-DIM ATOMS/B 2077401200041 2.5300E-02 7.7200E-01 1.0000E-03 2077401200042 ENDCOMMON 3 0 2077401200043 DATA 6 7 2077401200044 EN-MIN EN-MAX DATA ERR-S ERR-SYS ERR-T 2077401200045 KEV KEV NO-DIM PER-CENT PER-CENT PER-CENT 2077401200046 2.0000E+01 2.5000E+01 5.7000E-03 1.9100E+01 1.5000E+01 2.4200E+012077401200047 2.5000E+01 3.0000E+01 5.8000E-03 1.7800E+01 1.2400E+01 2.1700E+012077401200048 3.0000E+01 4.0000E+01 7.1000E-03 1.0600E+01 9.5000E+00 1.4200E+012077401200049 4.0000E+01 5.0000E+01 6.8000E-03 1.0700E+01 8.8000E+00 1.3800E+012077401200050 5.0000E+01 6.0000E+01 8.7000E-03 7.9000E+00 7.5000E+00 1.0900E+012077401200051 6.0000E+01 7.0000E+01 6.1000E-03 1.1700E+01 8.1000E+00 1.4200E+012077401200052 7.0000E+01 8.0000E+01 8.7000E-03 1.0100E+01 8.5000E+00 1.3200E+012077401200053 ENDDATA 9 0 2077401200054 ENDSUBENT 53 0 2077401299999 SUBENT 20774013 20101112 22252077401300001 BIB 8 41 2077401300002 REACTION ((95-AM-241(N,F),,SIG)/(92-U-235(N,F),,SIG)) 2077401300003 - multiple scattering and self-shielding, 2077401300004 INC-SOURCE (P-T ) The water-cooled neutron target consisted of 2077401300005 a tritium loaded titanium layer(12.5mm diam,2.1micron 2077401300006 thick),evaporated onto a 0.3 mm thick tungsten 2077401300007 backing and protected by an evaporated layer of 2077401300008 50 micrograms/cm**2 aluminium. 2077401300009 The specific target activity was 0.8 Ci/cm2. 2077401300010 the energy range of neutrons was between 50 and 2077401300011 250 keV. 2077401300012 .All neutrons were emitted from the target into a 2077401300013 cone in forward direction with an opening angle 2077401300014 of 120 degrees. 2077401300015 MONITOR ((92-U-235(N,F),,NU)/(95-AM-241(N,F),,NU)) Thermal 2077401300016 value taken. 2077401300017 COMMENT .Run at 65.3 mm flight path. 2077401300018 STATUS (TABLE) Table VI in preprint. 2077401300019 HISTORY (19801112C) 2077401300020 CORRECTION .For - 2077401300021 - differences in flight path between samples, 2077401300022 - time-dependent and -independent background, 2077401300023 - time distribution of fission neutrons, 2077401300024 - fission in isotopic impurities, 2077401300025 - neutron scattering in the stainless steel canning, 2077401300026 - fraction of fission neutrons above the threshold, 2077401300027 - multiple scattering and self-shielding, 2077401300028 ERR-ANALYS .The systematic uncertainties consist of 2077401300029 - sample mass 1.5% 2077401300030 - flight path sample 3.0-14.0% 2077401300031 - constant backgr. Sample 2.9-14.3% 2077401300032 - flight path reference sample 2.3- 8.3% 2077401300033 - constant backgr. Ref. Sample 0.1- 0.5% 2077401300034 - unfolding procedure 8.7-12.3% 2077401300035 - isotopic impurities 3.9- 8.0% 2077401300036 - fraction of fission events 2077401300037 above threshold 3.0% 2077401300038 - multiple scattering and 2077401300039 self-shielding 1.4% 2077401300040 - neutron flux 0.4% 2077401300041 ---------- 2077401300042 - total systematic error 13.5-21.1% 2077401300043 ENDBIB 41 0 2077401300044 COMMON 3 3 2077401300045 EN-NRM MONIT THICKNESS 2077401300046 EV NO-DIM ATOMS/B 2077401300047 2.5300E-02 7.7200E-01 3.2000E-03 2077401300048 ENDCOMMON 3 0 2077401300049 DATA 6 5 2077401300050 EN-MIN EN-MAX DATA ERR-S ERR-SYS ERR-T 2077401300051 KEV KEV NO-DIM PER-CENT PER-CENT PER-CENT 2077401300052 6.0000E+01 8.0000E+01 8.2000E-03 1.5100E+01 2.0200E+01 2.5200E+012077401300053 8.0000E+01 1.0000E+02 1.1200E-02 9.8000E+00 1.4700E+01 1.7700E+012077401300054 1.0000E+02 1.5000E+02 1.1200E-02 5.7000E+00 1.4500E+01 1.5600E+012077401300055 1.5000E+02 2.0000E+02 1.2400E-02 5.6000E+00 1.3500E+01 1.4600E+012077401300056 2.0000E+02 2.5000E+02 2.0300E-02 7.2000E+00 1.9400E+01 2.0700E+012077401300057 ENDDATA 7 0 2077401300058 ENDSUBENT 57 0 2077401399999 ENDENTRY 13 0 2077499999999