ENTRY 31570 20140930 31663157000000001 SUBENT 31570001 20140930 31663157000100001 BIB 11 28 3157000100002 TITLE Determination of thermal neutron radiative capture 3157000100003 cross section of 6Li 3157000100004 AUTHOR (Chang Su Park, Gwang Min Sun, H.D.Choi) 3157000100005 INSTITUTE (3KORNSU) 3157000100006 REFERENCE (J,NIM/B,245,367,2006) 3157000100007 FACILITY (REAC,3KORKAE) HANARO 3157000100008 INC-SPECT The true integrated neutron flux at the sample 3157000100009 position was increased to 1.0x10**8 n/cm2/s with 3157000100010 the Cd-ratio of over 200. 3157000100011 DETECTOR (HPGE) Relative efficiency of 43% and resolution of 3157000100012 2.5 keV (FWHM) for the 60Co 1332 keV gamma-line. 3157000100013 SAMPLE (3-LI-6,ENR=0.956) Enriched (95.6 at.%) 6Li2CO3 3157000100014 powder, whose 6Li abundance was confirmed by mass 3157000100015 spectrometry. 3157000100016 METHOD (MOMIX) 6Li2CO3 sample was mixed with melamine, and 3157000100017 the mass ratio of 6Li2CO3 to melamine was determined 3157000100018 by predicting the approximate count rates for the 6Li 3157000100019 and 1H capture gamma-rays. 3157000100020 (ACTIV) Two samples 6Li2CO3:melamine=224 mg:211 mg, 3157000100021 and 157 mg:306 mg were irradiated for about 70 hrs. 3157000100022 CORRECTION Empty run was done for about 60 hrs to measure 3157000100023 background. 3157000100024 Two graphite samples (203 and 562 mg, 99.999% purity) 3157000100025 were also irradiated for about 50 hrs to estimate 3157000100026 background variation due to scattering effect of the 3157000100027 sample. 3157000100028 HISTORY (20060711C) SD 3157000100029 (20140930A) On. Recompiled. 3157000100030 ENDBIB 28 0 3157000100031 COMMON 2 3 3157000100032 EN-DUMMY E-NRM 3157000100033 EV KEV 3157000100034 0.0253 2223.25 3157000100035 ENDCOMMON 3 0 3157000100036 ENDSUBENT 35 0 3157000199999 SUBENT 31570002 20140930 31663157000200001 BIB 5 15 3157000200002 REACTION (3-LI-6(N,G)3-LI-7,PAR,SIG,,SPA) 3157000200003 MONITOR (1-H-1(N,G)1-H-2,PAR,SIG) from IAEA PGAA database 3157000200004 ERR-ANALYS (ERR-T)A Total uncertainty propagated from: 3157000200005 (ERR-1) Uncertainty due to detector efficiency (6Li) 3157000200006 (ERR-2) Uncertainty due to detector efficiency (1H) 3157000200007 (ERR-3) Uncertainty due to net peak count rate (6Li) 3157000200008 (ERR-4) Uncertainty due to net peak count rate (1H) 3157000200009 (MONIT-ERR) Uncertainty in reference cross section 3157000200010 ADD-RES Absolute intensities: 3157000200011 40.1+/-4.7 % for 6768.81 keV gamma line, 3157000200012 59.9+/-6.4 % for 7245.91 keV gamma line. 3157000200013 k0,H factors: 3157000200014 (5.01+/-0.60)E-04 for 6768.81 keV gamma line, 3157000200015 (7.48+/-0.81)E-04 for 7245.91 keV gamma line. 3157000200016 STATUS (TABLE) Table 3 of Nucl.Instrum.Meth.B245(2006)367 3157000200017 ENDBIB 15 0 3157000200018 COMMON 4 3 3157000200019 MONIT MONIT-ERR ERR-2 ERR-4 3157000200020 MB PER-CENT PER-CENT PER-CENT 3157000200021 332.6 0.2 2.4 0.1 3157000200022 ENDCOMMON 3 0 3157000200023 DATA 5 2 3157000200024 E DATA ERR-T ERR-1 ERR-3 3157000200025 KEV MB PER-CENT PER-CENT PER-CENT 3157000200026 6768.81 15.1 12.0 11.7 1.0 3157000200027 7245.91 22.6 10.9 10.6 0.7 3157000200028 ENDDATA 4 0 3157000200029 ENDSUBENT 28 0 3157000299999 SUBENT 31570003 20140930 31663157000300001 BIB 2 3 3157000300002 REACTION (3-LI-6(N,G)3-LI-7,,SIG,,SPA) 3157000300003 STATUS (TABLE) Text (p370) of Nucl.Instrum.Meth.B245(2006)367 3157000300004 (DEP,31570002) partial cross sections given 3157000300005 ENDBIB 3 0 3157000300006 NOCOMMON 0 0 3157000300007 DATA 2 1 3157000300008 DATA ERR-T 3157000300009 MB PER-CENT 3157000300010 37.7 8.1 3157000300011 ENDDATA 3 0 3157000300012 ENDSUBENT 11 0 3157000399999 ENDENTRY 3 0 3157099999999