ENTRY 31612 20080711 31283161200000001 SUBENT 31612001 20080711 31283161200100001 BIB 12 32 3161200100002 TITLE Measurement of Neutron Capture Resonance Integrals 3161200100003 on Bromine Isotopes 3161200100004 AUTHOR (E.L.Dorval,M.A.Arribere,S.Ribeiro Guevara) 3161200100005 INSTITUTE (3ARGCAB) 3161200100006 REFERENCE (J,NSE,159,199,2008) 3161200100007 FACILITY (REAC,3ARGCAB) The RA-6 is a light water-cooled and 3161200100008 moderated material test reactor-type pool reactor. 3161200100009 Its maximum thermal power is 500 kW. 3161200100010 SAMPLE Bromine in the form of KBr with ~99.5% purity was 3161200100011 diluted. The resulting salt concentration was 3161200100012 (1.2605 +- 0.0010) mg/g. Whatmann ashless filter 3161200100013 papers were impregnated with the KBr 3161200100014 solution. Filter papers were dried at room 3161200100015 temperature. Later, each filter was rolled along 3161200100016 with another nonimpregnated one and pressed inside a 3161200100017 matrix, which gave it the final form of a pellet 3161200100018 ~2.5 mm thick and 13 mm in diameter. 3161200100019 MONITOR (79-AU-197(N,G)79-AU-198,,RI) 3161200100020 DETECTOR (GE-IN)Activity measurements were performed with a 3161200100021 63-cm3 ORTEC intrinsic N-type germanium coaxial 3161200100022 detector. 3161200100023 METHOD (ACTIV,STTA,GSPEC) 3161200100024 Seven irradiations were performed. Irradiation times 3161200100025 ranged from ~5 to ~ 6min. Every sample and a 3161200100026 (0.1003+-0.0012) wt% gold-aluminum flux monitor were 3161200100027 placed inside a 1-mm-thick Cd cover. 3161200100028 ERR-ANALYS (ERR-1) Uncertainty due to resonance integral of gold 3161200100029 used as a flux monitor 3161200100030 (ERR-2) Uncertainty due to gold-aluminum concentration 3161200100031 STATUS (TABLE) Data were received from Dr. E.Dorval 3161200100032 (APRVD) Entry approved by Dr. E.Dorval 3161200100033 HISTORY (20080711C) SD 3161200100034 ENDBIB 32 0 3161200100035 COMMON 5 3 3161200100036 EN-MIN MONIT MONIT-ERR ERR-1 ERR-2 3161200100037 EV B B PER-CENT PER-CENT 3161200100038 0.5 1562. 48. 3.1 1.2 3161200100039 ENDCOMMON 3 0 3161200100040 ENDSUBENT 39 0 3161200199999 SUBENT 31612002 20080711 31283161200200001 BIB 4 9 3161200200002 REACTION (35-BR-79(N,G)35-BR-80-M,,RI) 3161200200003 DECAY-DATA (35-BR-80-M,4.4205HR,DG,37.052,0.391) 3161200200004 METHOD (STATD) Weighted Average for Capture Reactions on 79Br 3161200200005 ERR-ANALYS (ERR-3)Uncertainty due to absolute detection efficiency3161200200006 (ERR-4) Uncertainty due to systematic errors in gamma 3161200200007 yields common to the 616- and 666-keV gamma lines. 3161200200008 (ERR-S) Statistical uncertainties are given by the 3161200200009 fitted intercept and slope. 3161200200010 (ERR-T) Total error 3161200200011 ENDBIB 9 0 3161200200012 NOCOMMON 0 0 3161200200013 DATA 5 1 3161200200014 DATA ERR-T ERR-3 ERR-4 ERR-S 3161200200015 B B PER-CENT PER-CENT PER-CENT 3161200200016 29.2 3.1 3.7 9.0 0.7 3161200200017 ENDDATA 3 0 3161200200018 ENDSUBENT 17 0 3161200299999 SUBENT 31612003 20080711 31283161200300001 BIB 4 9 3161200300002 REACTION (35-BR-79(N,G)35-BR-80-G,,RI) 3161200300003 DECAY-DATA (35-BR-80-G,17.68MIN,DG,616.3,0.067,DG,665.8,0.0108) 3161200300004 METHOD (STATD) Weighted Average for Capture Reactions on 79Br 3161200300005 ERR-ANALYS (ERR-3)Uncertainty due to absolute detection efficiency3161200300006 (ERR-4) Uncertainty due to systematic errors in gamma 3161200300007 yields common to the 616- and 666-keV gamma lines. 3161200300008 (ERR-S) Statistical uncertainties are given by the 3161200300009 fitted intercept and slope. 3161200300010 (ERR-T) Total error 3161200300011 ENDBIB 9 0 3161200300012 NOCOMMON 0 0 3161200300013 DATA 5 1 3161200300014 DATA ERR-T ERR-3 ERR-4 ERR-S 3161200300015 B B PER-CENT PER-CENT PER-CENT 3161200300016 86.1 8.9 3.7 9.0 0.6 3161200300017 ENDDATA 3 0 3161200300018 ENDSUBENT 17 0 3161200399999 SUBENT 31612004 20080711 31283161200400001 BIB 4 11 3161200400002 REACTION (35-BR-81(N,G)35-BR-82-M,,RI) 3161200400003 DECAY-DATA (35-BR-82-M,6.13MIN,DG,45.949,0.0024, 3161200400004 DG,698.37,0.00034, 3161200400005 DG,776.52,0.0026, 3161200400006 DG,1317.44,0.000011, 3161200400007 DG,1474.88,0.00020) 3161200400008 METHOD (STATD) Weighted Average for Capture Reactions on 79Br 3161200400009 ERR-ANALYS (ERR-3)Uncertainty due to absolute detection efficiency3161200400010 (ERR-4) Systematic uncertainty in emission 3161200400011 probabilities of 82gBr. 3161200400012 (ERR-T) Total error 3161200400013 ENDBIB 11 0 3161200400014 NOCOMMON 0 0 3161200400015 DATA 4 1 3161200400016 DATA ERR-T ERR-3 ERR-4 3161200400017 B B PER-CENT PER-CENT 3161200400018 40.9 2.3 3.5 1.0 3161200400019 ENDDATA 3 0 3161200400020 ENDSUBENT 19 0 3161200499999 SUBENT 31612005 20080711 31283161200500001 BIB 3 13 3161200500002 REACTION (35-BR-81(N,G)35-BR-82-G,,RI) 3161200500003 DECAY-DATA (35-BR-82-G,35.282HR,DG,554.34,0.707, 3161200500004 DG,619.106,0.434, 3161200500005 DG,698.37,0.285, 3161200500006 DG,776.52,0.835, 3161200500007 DG,827.828,0.240, 3161200500008 DG,1044.002,0.272, 3161200500009 DG,1317.473,0.265, 3161200500010 DG,1474.88,0.163) 3161200500011 ERR-ANALYS (ERR-3)Uncertainty due to absolute detection efficiency3161200500012 (ERR-4) Systematic uncertainty in emission 3161200500013 probabilities of 82gBr. 3161200500014 (ERR-T) Total error 3161200500015 ENDBIB 13 0 3161200500016 NOCOMMON 0 0 3161200500017 DATA 4 1 3161200500018 DATA ERR-T ERR-3 ERR-4 3161200500019 B B PER-CENT PER-CENT 3161200500020 5.1 1.1 3.5 1.0 3161200500021 ENDDATA 3 0 3161200500022 ENDSUBENT 21 0 3161200599999 SUBENT 31612006 20080711 31283161200600001 BIB 3 15 3161200600002 REACTION (35-BR-81(N,G)35-BR-82,,RI) res.integr was measured 3161200600003 as a M+G sum. 3161200600004 DECAY-DATA (35-BR-82-M,6.13MIN) 3161200600005 (35-BR-82-G,35.282HR,DG,554.34,0.707, 3161200600006 DG,619.106,0.434, 3161200600007 DG,698.37,0.285, 3161200600008 DG,776.52,0.835, 3161200600009 DG,827.828,0.240, 3161200600010 DG,1044.002,0.272, 3161200600011 DG,1317.473,0.265, 3161200600012 DG,1474.88,0.163) 3161200600013 ERR-ANALYS (ERR-3)Uncertainty due to absolute detection efficiency3161200600014 (ERR-4) Systematic uncertainty in emission 3161200600015 probabilities of 82gBr. 3161200600016 (ERR-T) Total error 3161200600017 ENDBIB 15 0 3161200600018 NOCOMMON 0 0 3161200600019 DATA 4 1 3161200600020 DATA ERR-T ERR-3 ERR-4 3161200600021 B B PER-CENT PER-CENT 3161200600022 45.2 2.2 3.5 1.0 3161200600023 ENDDATA 3 0 3161200600024 ENDSUBENT 23 0 3161200699999 SUBENT 31612007 20080711 31283161200700001 BIB 4 18 3161200700002 REACTION (35-BR-79(N,G)35-BR-80-M,,RI) 3161200700003 DECAY-DATA (35-BR-80-M,4.4205HR,DG,37.052,0.391) 3161200700004 METHOD Direct method 3161200700005 ERR-ANALYS (ERR-SYS) The main contributions to systematic 3161200700006 uncertainties are: 3161200700007 * gold monitor resonance integral (ERR-1) 3161200700008 * gold - aluminum monitor concentration (ERR-2) 3161200700009 * source photopeak area (1.5% for 37 keV or 2.2% 3161200700010 for 46 keV), 3161200700011 * gamma yields of bromine (2.0% for 37 keV or 3161200700012 5.1% for 46 keV), 3161200700013 * calibration source gamma yields (3.7% for 37 keV 3161200700014 or 2.0% for 46 keV), 3161200700015 * calibration sources initial activities ( 1.0% for 3161200700016 37 keV or 6.2% for 46 keV). 3161200700017 (ERR-T) Total error. Statistical uncertainties are due 3161200700018 to the photopeak areas of the sample and of the gold 3161200700019 flux monitor. 3161200700020 ENDBIB 18 0 3161200700021 NOCOMMON 0 0 3161200700022 DATA 3 1 3161200700023 DATA ERR-T ERR-SYS 3161200700024 B B PER-CENT 3161200700025 30.3 2.6 2.6 3161200700026 ENDDATA 3 0 3161200700027 ENDSUBENT 26 0 3161200799999 SUBENT 31612008 20080711 31283161200800001 BIB 4 18 3161200800002 REACTION (35-BR-81(N,G)35-BR-82-M,,RI) 3161200800003 DECAY-DATA (35-BR-82-M,6.13MIN) 3161200800004 METHOD Direct method 3161200800005 ERR-ANALYS (ERR-SYS) The main contributions to systematic 3161200800006 uncertainties are: 3161200800007 * gold monitor resonance integral (ERR-1) 3161200800008 * gold - aluminum monitor concentration (ERR-2) 3161200800009 * source photopeak area (1.5% for 37 keV or 2.2% 3161200800010 for 46 keV), 3161200800011 * gamma yields of bromine (2.0% for 37 keV or 3161200800012 5.1% for 46 keV), 3161200800013 * calibration source gamma yields (3.7% for 37 keV 3161200800014 or 2.0% for 46 keV), 3161200800015 * calibration sources initial activities ( 1.0% for 3161200800016 37 keV or 6.2% for 46 keV). 3161200800017 (ERR-T) Total error. Statistical uncertainties are due 3161200800018 to the photopeak areas of the sample and of the gold 3161200800019 flux monitor. 3161200800020 ENDBIB 18 0 3161200800021 NOCOMMON 0 0 3161200800022 DATA 3 1 3161200800023 DATA ERR-T ERR-SYS 3161200800024 B B PER-CENT 3161200800025 42.7 4.0 4.0 3161200800026 ENDDATA 3 0 3161200800027 ENDSUBENT 26 0 3161200899999 ENDENTRY 8 0 3161299999999