ENTRY 30757 20090908 31413075700000001 SUBENT 30757001 20090908 31413075700100001 BIB 15 32 3075700100002 TITLE Determination of the averaged cross section of the 3075700100003 Br-79(n,a)As-76 reaction in a fission neutron spectrum 3075700100004 AUTHOR (R.R.Pla,I.M.Cohen) 3075700100005 INSTITUTE (3ARGCNE) 3075700100006 REFERENCE (J,RRL,58,169,198309) 3075700100007 SAMPLE Sample of K-Br 3075700100008 MONITOR ((MONIT1)26-FE-54(N,P)25-MN-54,,SIG) 3075700100009 ((MONIT2)25-MN-55(N,2N)25-MN-54,,SIG) 3075700100010 FACILITY (REAC,3ARGCNE) RA-3 reactor 3075700100011 INC-SPECT Fast component of the RA-3 reactor neutron flux 3075700100012 is very similar to a fission spectrum 3075700100013 METHOD (ACTIV,CHSEP) 3075700100014 The presence of Br-82 formed by Br-81(n,g) reaction 3075700100015 with epithermal neutrons prevent the detection of the 3075700100016 As-76, mostly because of its peak at 554.3 keV. So it 3075700100017 was necessary to use a chemical separation method 3075700100018 DETECTOR (GELI) 70 cm3,2.4 keV resolution 3075700100019 CORRECTION Correction factor for the detector efficiency 3075700100020 ERR-ANALYS (ERR-T) Total uncertainty includes: 3075700100021 -Statistical error 3075700100022 -certified and measurement errors of the sources 3075700100023 -errors of the cross-sections for the standard reaction3075700100024 -errors of absolute intensities of As-76 peaks 3075700100025 -error of the correction factor 3075700100026 COMMENT Authors comment 3075700100027 the cross section result is the average value of 3075700100028 four independent measurements 3075700100029 STATUS (TABLE) Data taken from Radiochem.Radioanal. 3075700100030 Letters 58(1983)169 from text. 3075700100031 HISTORY (19871009C) DG.- 3075700100032 (20090725A) SD:Updated to new date formats,lower case. 3075700100033 Added FIS to REACTION SF8 and COMMENT. 3075700100034 ENDBIB 32 0 3075700100035 NOCOMMON 0 0 3075700100036 ENDSUBENT 35 0 3075700199999 SUBENT 30757002 20090908 31413075700200001 BIB 3 5 3075700200002 REACTION (35-BR-79(N,A)33-AS-76,,SIG,,FIS) 3075700200003 DECAY-DATA (33-AS-76,26.32HR,DG,559.10,0.45,DG,657.03,0.06075) 3075700200004 COMMENT Compiler's comment: Abstract gives result 0.0162 +- 3075700200005 0.0019 mb while "Result" section of paper gives 3075700200006 0.0182 +- 0.0019 mb. One of the two must be a misprint.3075700200007 ENDBIB 5 0 3075700200008 COMMON 1 3 3075700200009 EN-MEAN 3075700200010 MEV 3075700200011 1.5 3075700200012 ENDCOMMON 3 0 3075700200013 DATA 6 1 3075700200014 DATA ERR-T MONIT1 MONIT1-ERR MONIT2 MONIT2-ERR 3075700200015 MB MB MB MB MB MB 3075700200016 0.0182 0.0019 82.5 5. 0.258 0.013 3075700200017 ENDDATA 3 0 3075700200018 ENDSUBENT 17 0 3075700299999 ENDENTRY 2 0 3075799999999