ENTRY 13190 20181203 14451319000000001 SUBENT 13190001 20181203 14451319000100001 BIB 12 31 1319000100002 INSTITUTE (1USAMHG) 1319000100003 REFERENCE (J,NSE,110,282,1992) 1319000100004 AUTHOR (E.Quang,G.F.Knoll) 1319000100005 TITLE Absolute measurements of the fast neutron capture cross1319000100006 section of 238U 1319000100007 SAMPLE Depleted metallic uranium sheets, isotopic composition:1319000100008 (92-U-234,ENR=0.0000061) 1319000100009 (92-U-235,ENR=0.00339) 1319000100010 (92-U-236,ENR=0.0000295) 1319000100011 (92-U-238,ENR=0.9966) 1319000100012 METHOD (CHSEP) Measured activity of 239Np daughter which was 1319000100013 chemically separated from sample. 1319000100014 DETECTOR (SCIN) ORTEC high purity germanium detector 1319000100015 MONITOR ((MONIT)92-U-238(N,TOT),,SIG) Flux normalization 1319000100016 neutron flux measured relative to 252Cf 1319000100017 239Np activity relative to 243Am standard 1319000100018 DECAY-DATA (93-NP-239,2.355D,DG,106.,0.227,DG,228.,0.107, 1319000100019 DG,278.,0.142) 1319000100020 CORRECTION Corrected for: 1319000100021 - room returned neutrons 1319000100022 - neutron scattering within components of irradiation 1319000100023 structure 1319000100024 - neutron energy spectrum 1319000100025 - chemical separation yield 1319000100026 STATUS (APRVD) E.Quang, 90/8/25 1319000100027 (TABLE) Text on p.287 of Nucl.Sci.Eng.110,282,1992 1319000100028 HISTORY (19900502C) 1319000100029 (19920316A) BIB update, value at 23 keV updated 1319000100030 (20181201A) OS. Sub.2 split in two. ERR-ANALYS, SAMPLE,1319000100031 STATUS updated, minor corr.in REFERENCE, converted to 1319000100032 lower and upper case 1319000100033 ENDBIB 31 0 1319000100034 NOCOMMON 0 0 1319000100035 ENDSUBENT 34 0 1319000199999 SUBENT 13190002 20181203 14451319000200001 BIB 5 14 1319000200002 REACTION (92-U-238(N,G)92-U-239,,SIG) 1319000200003 INC-SOURCE (PHOTO) Sb-Be for neutrons of 23 keV 1319000200004 (nearly monoenergetic) 1319000200005 ERR-ANALYS (ERR-T) Includes uncertainty due to: 1319000200006 (ERR-1) Photoneutron source calibration 1.18% 1319000200007 (ERR-2) average flux calculation 0.36% 1319000200008 (ERR-3) number of 238U nuclei 0.03% 1319000200009 (ERR-S) 237Np activity measurement 1.60% 1319000200010 (ERR-4) chemical separation 1.10% 1319000200011 (ERR-5) room returned neutrons 0.03% 1319000200012 (ERR-6) scattered neutrons 0.05% 1319000200013 (ERR-7,,0.01) other corrections <0.01% 1319000200014 STATUS (COREL,13190003) Data from Na-Be neutron source 1319000200015 HISTORY (20181201A) 967 keV data moved to sub.3 1319000200016 ENDBIB 14 0 1319000200017 COMMON 6 3 1319000200018 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 1319000200019 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 1319000200020 1.18 0.36 0.03 1.10 0.03 0.05 1319000200021 ENDCOMMON 3 0 1319000200022 DATA 6 1 1319000200023 EN EN-RSL DATA ERR-T ERR-S MONIT 1319000200024 KEV KEV MB MB PER-CENT B 1319000200025 22.9 2.7 491. 11. 1.60 13.69 1319000200026 ENDDATA 3 0 1319000200027 ENDSUBENT 26 0 1319000299999 SUBENT 13190003 20181203 14451319000300001 BIB 5 14 1319000300002 REACTION (92-U-238(N,G)92-U-239,,SIG) 1319000300003 INC-SOURCE (PHOTO) Na-Be for neutrons of 967 keV 1319000300004 (nearly monoenergetic) 1319000300005 ERR-ANALYS (ERR-T) Includes uncertainty due to: 1319000300006 (ERR-1) Photoneutron source calibration 1.32% 1319000300007 (ERR-2) average flux calculation 0.27% 1319000300008 (ERR-3) number of 238U nuclei 0.03% 1319000300009 (ERR-S) 237Np activity measurement 2.71% 1319000300010 (ERR-4) chemical separation 1.22% 1319000300011 (ERR-5) room returned neutrons 0.44% 1319000300012 (ERR-6) scattered neutrons 0.12% 1319000300013 (ERR-7,,0.01) other corrections <0.01% 1319000300014 STATUS (COREL,13190002) Data from Sb-Be neutron source 1319000300015 HISTORY (20181201C) 967 keV data moved from sub.2 1319000300016 ENDBIB 14 0 1319000300017 COMMON 6 3 1319000300018 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 1319000300019 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 1319000300020 1.32 0.27 0.03 1.22 0.44 0.12 1319000300021 ENDCOMMON 3 0 1319000300022 DATA 6 1 1319000300023 EN EN-RSL DATA ERR-T ERR-S MONIT 1319000300024 KEV KEV MB MB PER-CENT B 1319000300025 966.7 28.0 138. 5. 2.71 7.116 1319000300026 ENDDATA 3 0 1319000300027 ENDSUBENT 26 0 1319000399999 ENDENTRY 3 0 1319099999999