ENTRY 14187 20120815 13851418700000001 SUBENT 14187001 20120815 13851418700100001 BIB 15 30 1418700100002 TITLE Thermal-neutron cross section for 10B(n,t)2a via 1418700100003 3He-4He mass spectrometry 1418700100004 AUTHOR (W.B.Clarke,R.T.Fleming) 1418700100005 INSTITUTE (1CANMCM,1USANIS) 1418700100006 REFERENCE (J,PR/C,39,1633,1989) 1418700100007 FACILITY (REAC,1CANMCM) Irradiation position close to the edge 1418700100008 the core of the light-water moderated reactor 1418700100009 (REAC,1USANIS) Graphite thermal column attached to the 1418700100010 heavy water moderated reactor 1418700100011 SAMPLE Known concentrations of NBS standard reference 1418700100012 materials No 951 (10B/11B=0.2472) and 1418700100013 952 (10B/11B=18.80) dissolved in distilled water, 1418700100014 pipeted into PE tubes, weighted, freeze-dried and 1418700100015 placed in lead containers 1418700100016 DETECTOR Mass spectrometer 1418700100017 MONITOR (5-B-10(N,A)3-LI-7,,SIG,,MXW) 1418700100018 MONIT-REF (,S.F.Mughabghab+,B,NEUT.CS 1A,,1981) 1418700100019 CORRECTION Corrections applied for 1418700100020 - 3H production via 2H(n,g)3H 0.3% resp.15-19% 1418700100021 - 4He production via 12C(n,a)9Be < 0.1% 1418700100022 ERR-ANALYS (ERR-T) Total uncertainty consisting of random and 1418700100023 systematic component at 1 sigma level 1418700100024 INC-SPECT Highly thermalized neutron flux in the core of light- 1418700100025 water moderated reactor 1418700100026 METHOD (ASEP,MASSP) Cross section determined from measurement 1418700100027 of 3He (from decay of 3H) and 4He in a mass spectrom. 1418700100028 PART-DET (HE3,A) Mass spectrometer used to detect 3He and 4He 1418700100029 HISTORY (20080830C) Compiled by S.H. 1418700100030 (20101122A) OS. Units in sub.2 corrected 1418700100031 (20120815U) SD: Small correction in SAMPLE was made. 1418700100032 ENDBIB 30 0 1418700100033 NOCOMMON 0 0 1418700100034 ENDSUBENT 33 0 1418700199999 SUBENT 14187002 20110124 13701418700200001 BIB 4 4 1418700200002 REACTION (5-B-10(N,T+A)2-HE-4,,SIG,,MXW) 1418700200003 DECAY-DATA (1-H-3,12.38YR) 1418700200004 STATUS (TABLE) Data taken from Tab. 1. of the reference 1418700200005 HISTORY (20101122A) OS. Data units changed to MB. 1418700200006 ENDBIB 4 0 1418700200007 NOCOMMON 0 0 1418700200008 DATA 5 1 1418700200009 EN-DUMMY DATA ERR-T MONIT MONIT-ERR 1418700200010 EV MB MB B B 1418700200011 0.0253 4.47 0.15 3837.0 9.0 1418700200012 ENDDATA 3 0 1418700200013 ENDSUBENT 12 0 1418700299999 ENDENTRY 2 0 1418799999999