ENTRY 11000 20200229 14641100000000001 SUBENT 11000001 20200229 14641100000100001 BIB 9 17 1100000100002 INSTITUTE (1USAANL) 1100000100003 REFERENCE (J,NSE,78,239,1981) 1100000100004 AUTHOR (W.P.Poenitz,L.R.Fawcett Jr,D.L.Smith) 1100000100005 TITLE Measurements of the 238-U(n,gamma) cross section at 1100000100006 thermal and fast neutron energies. 1100000100007 METHOD (ACTIV).Absolute calibration with 243-Am. 1100000100008 DECAY-DATA (93-NP-239,2.355D,DG,228.,,DG,278.) 1100000100009 DETECTOR (GELI) Resolution of counting system 2.6 keV FWHM. 1100000100010 Determined using 1.33-MeV gamma transition in the 1100000100011 decay of 60-Co. 1100000100012 (FISCH) Low mass fission chamber for U-235 monitor. 1100000100013 STATUS (APRVD) Approved by W.P.Poenitz, 81/12/7. 1100000100014 HISTORY (19810914C) 1100000100015 (19820514A) BIB correction. 1100000100016 (20200227A) OS. Modified REACTION in sub.2, updated 1100000100017 STATUS, ERR-ANALYS, converted to lower case, 1100000100018 various BIB changes 1100000100019 ENDBIB 17 0 1100000100020 NOCOMMON 0 0 1100000100021 ENDSUBENT 20 0 1100000199999 SUBENT 11000002 20200229 14641100000200001 BIB 8 20 1100000200002 REACTION (92-U-238(N,G)92-U-239,,SIG) 1100000200003 FACILITY (REAC,1USAANL) 1100000200004 INC-SOURCE (THCOL) 1100000200005 SAMPLE (92-U-238,ENR=0.996) Metallic U foils - 99.6% 238-U. 1100000200006 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 1100000200007 ERR-ANALYS (ERR-T) Given uncertainty includes: 1100000200008 (ERR-1) Statistical uncertainty for Au activity countin1100000200009 (0.05%) 1100000200010 (ERR-2) Statistical uncertainty and reproducibility of 1100000200011 239-Np counting (0.4%) 1100000200012 (ERR-3) Error in calibration with 243-Am sources 1100000200013 (0.4%) 1100000200014 (ERR-4) Systematic uncertainty of the 4PI-beta-gamma 1100000200015 coincidence technique (0.4%) 1100000200016 (ERR-5) Neutron self-shielding and scattering 1100000200017 correction (0.1%) 1100000200018 (ERR-6) Uncertainty in weights of samples (0.2%) 1100000200019 (MONIT-ERR) Uncertainty in Au cross section (0.1%) 1100000200020 STATUS (TABLE) p.244, Nucl.Sci.Eng.78,239,1981 1100000200021 HISTORY (20200227A) Deleted SF8=MXW, changed EN-DUMMY to EN 1100000200022 ENDBIB 20 0 1100000200023 COMMON 6 3 1100000200024 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 1100000200025 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 1100000200026 0.05 0.4 0.4 0.4 0.1 0.2 1100000200027 ENDCOMMON 3 0 1100000200028 DATA 5 1 1100000200029 EN DATA ERR-T MONIT MONIT-ERR 1100000200030 EV B B B B 1100000200031 0.0253 2.680 0.019 98.65 0.09 1100000200032 ENDDATA 3 0 1100000200033 ENDSUBENT 32 0 1100000299999 SUBENT 11000003 20200229 14641100000300001 BIB 8 21 1100000300002 REACTION (92-U-238(N,G)92-U-239,,SIG) 1100000300003 FACILITY (DYNAM,1USAANL) Tandem dynamitron 1100000300004 INC-SOURCE (P-LI7) 1100000300005 SAMPLE Metallic 238-U, less than 400 ppm 235-U. 1100000300006 MONITOR (92-U-235(N,F),,SIG) 1100000300007 ERR-ANALYS (ERR-T) Includes uncertainties in: 1100000300008 . Statistics and reproducibility 1100000300009 . Neutron background 1100000300010 . Second neutron group (above 800 keV) 1100000300011 . Scattering of neutrons in counter, sample, source 1100000300012 . Fission product decay 1100000300013 (ERR-1) Gamma detection efficiency (1.0%) 1100000300014 (ERR-2) 238-U sample mass (0.2%) 1100000300015 (ERR-3) Total fission-fragment absorption (0.5%) 1100000300016 (ERR-4) 239-Np half-life (0.2%) 1100000300017 (ERR-5) 235-U sample mass (0.6%) 1100000300018 (ERR-6) 235-U fission cross section (2.0%) 1100000300019 (ERR-S) Statistical uncertainty. 1100000300020 STATUS (TABLE) Table II, Nucl.Sci.Eng.78,239,1981 1100000300021 (COREL,11000004) Normalized with Au capture monitor 1100000300022 HISTORY (19820514A) BIB correction. 1100000300023 ENDBIB 21 0 1100000300024 COMMON 6 3 1100000300025 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 1100000300026 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 1100000300027 1.0 0.2 0.5 0.2 0.6 2.0 1100000300028 ENDCOMMON 3 0 1100000300029 DATA 7 17 1100000300030 EN EN-ERR EN-RSL DATA ERR-T ERR-S 1100000300031 MONIT 1100000300032 MEV MEV MEV B B B 1100000300033 B 1100000300034 0.030 0.001 0.007 0.428 0.018 0.012 1100000300035 2.04 1100000300036 0.143 0.004 0.011 0.157 0.006 0.004 1100000300037 1.488 1100000300038 0.168 0.004 0.014 0.144 0.004 0.002 1100000300039 1.441 1100000300040 0.244 0.005 0.020 0.125 0.004 0.003 1100000300041 1.322 1100000300042 0.401 0.006 0.025 0.105 0.004 0.002 1100000300043 1.214 1100000300044 0.501 0.006 0.024 0.116 0.004 0.002 1100000300045 1.169 1100000300046 0.504 0.006 0.024 0.118 0.004 0.002 1100000300047 1.166 1100000300048 0.504 0.006 0.024 0.109 0.004 0.003 1100000300049 1.167 1100000300050 0.533 0.019 0.096 0.115 0.007 0.002 1100000300051 1.162 1100000300052 0.598 0.006 0.023 0.123 0.003 0.001 1100000300053 1.148 1100000300054 0.807 0.010 0.049 0.129 0.003 0.001 1100000300055 1.138 1100000300056 0.968 0.005 0.023 0.136 0.005 0.003 1100000300057 1.205 1100000300058 1.106 0.009 0.044 0.119 0.005 0.004 1100000300059 1.215 1100000300060 1.505 0.009 0.040 0.070 0.003 0.002 1100000300061 1.249 1100000300062 2.053 0.005 0.013 0.053 0.003 0.002 1100000300063 1.298 1100000300064 2.496 0.013 0.066 0.026 0.006 0.005 1100000300065 1.272 1100000300066 3.033 0.005 0.017 0.033 0.009 0.008 1100000300067 1.220 1100000300068 ENDDATA 38 0 1100000300069 ENDSUBENT 68 0 1100000399999 SUBENT 11000004 20200229 14641100000400001 BIB 8 19 1100000400002 REACTION (92-U-238(N,G)92-U-239,,SIG) 1100000400003 FACILITY (DYNAM,1USAANL) Tandem dynamitron 1100000400004 INC-SOURCE (P-LI7) 1100000400005 SAMPLE Metallic 238-U, less than 400 ppm 235-U. 1100000400006 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 1100000400007 ERR-ANALYS (ERR-T) Includes uncertainties in: 1100000400008 . Statistics and reproducibility 1100000400009 . Neutron background 1100000400010 . Second neutron group (above 800 keV) 1100000400011 . Scattering of neutrons in samples, source 1100000400012 . Fission product decay 1100000400013 (ERR-1) Gamma detection efficiency (1.0%) 1100000400014 (ERR-2) 238-U sample mass (0.2%) 1100000400015 (ERR-3) 239-Np half-life (0.2%) 1100000400016 (ERR-S) Statistical uncertainty. 1100000400017 (MONIT-ERR) Au capture cross section (5.%) 1100000400018 STATUS (TABLE) Table II, Nucl.Sci.Eng.78,239,1981 1100000400019 (COREL,11000003) normalized with 235U(n,f) monitor 1100000400020 HISTORY (19820514A) BIB correction. 1100000400021 ENDBIB 19 0 1100000400022 COMMON 4 3 1100000400023 ERR-1 ERR-2 ERR-3 MONIT-ERR 1100000400024 PER-CENT PER-CENT PER-CENT PER-CENT 1100000400025 1.0 0.2 0.2 5. 1100000400026 ENDCOMMON 3 0 1100000400027 DATA 7 2 1100000400028 EN EN-ERR EN-RSL DATA ERR-T ERR-S 1100000400029 MONIT 1100000400030 MEV MEV MEV B B B 1100000400031 B 1100000400032 0.030 0.001 0.007 0.430 0.023 0.003 1100000400033 0.576 1100000400034 0.503 0.006 0.024 0.117 0.007 0.002 1100000400035 0.133 1100000400036 ENDDATA 8 0 1100000400037 ENDSUBENT 36 0 1100000499999 ENDENTRY 4 0 1100099999999