ENTRY 31601 20101215 31493160100000001 SUBENT 31601001 20101215 31493160100100001 BIB 17 56 3160100100002 TITLE The Determination of reactor neutron spectrum 3160100100003 averaged Cross- sections in a miniature neutron 3160100100004 source reactor facility 3160100100005 AUTHOR (S.A.Jonah,Y.V.Ibrahim,E.H.K.Akaho) 3160100100006 INSTITUTE (3NI ABU) Ahmadu Bello University, P.M.B. 1014, 3160100100007 Zaria, Nigeria 3160100100008 (3GHALGN) National Nuclear Research Institute, Ghana 3160100100009 Atomic Energy Commission, LG 80, Accra, Ghana 3160100100010 REFERENCE (J,ARI,66,1377,2008) abstract of the article was 3160100100011 published in the book of Abstracts of ND2007, but 3160100100012 never presented on the Conference. Article 3160100100013 submitted to Applied Rad. and Isotopes. 3160100100014 (R,INDC(NDS)-0574,67,2010) Same data given. 3160100100015 FACILITY (REAC,3NI ABU) NIRR-1 is a low-power nuclear reactor, 3160100100016 which has highly enriched uranium as fuel, light 3160100100017 water as moderator and beryllium as reflector. 3160100100018 MONITOR ((MONIT1)13-AL-27(N,P)12-MG-27,,SIG,,FIS) 3160100100019 ((MONIT2)79-AU-197(N,G)79-AU-198,,RI) 3160100100020 MONIT-REF JAERI-Data/Code 2002-020. Curves and Tables of Neutron 3160100100021 Cross Sections in JENDL-3.3 Part 1 (Z=1-50), edited by 3160100100022 Tsuneo Nakagawa, Hiromitsu Kawasaki and Keiichi 3160100100023 Shibata, November 2002.JAERI (2002). 3160100100024 INC-SPECT On the average the fast neutron flux density 3160100100025 was 1x10**11 n/cm2/s. 3160100100026 INC-SOURCE (REAC) The irradiation was performed for one hour in 3160100100027 an inner irradiation channel (i.e.B2) of NIRR-1 due 3160100100028 to the relatively higher fast-to-thermal flux ratio. 3160100100029 METHOD (ACTIV,GSPEC) 3160100100030 ANALYSIS The use of Al-0.1%Au foil (IRMM-530) as the 3160100100031 comparator and irradiation under Cd permits the 3160100100032 monitoring of the fast neutron flux via the 3160100100033 27Al(n,p)27Mg reaction and the epithermal neutron 3160100100034 flux via the 197Au(n,gamma)198Au reaction 3160100100035 simultaneously. 3160100100036 DETECTOR (HPGE) a horizontal dip-stick High-Purity Germanium 3160100100037 detector with a relative efficiency of 10% at 1332.5keV3160100100038 gamma ray line, the MAESTRO emulation software 3160100100039 compatible with the ADCAMs multi-channel analyzer card,3160100100040 associated electronic modules all made by EG&G ORTEC 3160100100041 and a personal computer. 3160100100042 PART-DET (DG) 3160100100043 ERR-ANALYS (ERR-T) The given uncertainties incorporate both 3160100100044 statistical and systematic uncertainties. 3160100100045 The main sources of uncertainties involved in 3160100100046 cross-section measurements were those associated with 3160100100047 the determination of fast neutron flux densities 3160100100048 and absolute decay rates. 3160100100049 FLAG (1.) cross section relative to 27Al(n,p) reaction 3160100100050 (2.) cross section relative to resonance integral of 3160100100051 197Au(n,gamma) reaction 3160100100052 STATUS (TABLE) Data taken from Tabl.2 of report 3160100100053 (APRVD) Entry was approved by Dr. S.A.Jonah 3160100100054 HISTORY (20070726C) SD 3160100100055 (20080813A) SD. Reference on the journal was added. 3160100100056 Title was corrected according publication. 3160100100057 (20101215A) V.S. Reference R,INDC(NDS) added. 3160100100058 ENDBIB 56 0 3160100100059 COMMON 3 3 3160100100060 EN-DUMMY MONIT1 MONIT2 3160100100061 MEV MB MB 3160100100062 1.5 4.28 1550. 3160100100063 ENDCOMMON 3 0 3160100100064 ENDSUBENT 63 0 3160100199999 SUBENT 31601002 20070727 31233160100200001 BIB 3 4 3160100200002 REACTION (13-AL-27(N,P)12-MG-27,,SIG,,FIS) 3160100200003 DECAY-DATA (12-MG-27,9.46MIN,DG,843.76,,DG,1014.43) 3160100200004 SAMPLE Two samples: 1. Al-0.1%Au foil; 0.1mm thick, IRMM-530 3160100200005 2. 99.99% Al; 0.1 mm thick; GODDFELLOW 3160100200006 ENDBIB 4 0 3160100200007 NOCOMMON 0 0 3160100200008 DATA 3 2 3160100200009 DATA ERR-T FLAG 3160100200010 MB MB NO-DIM 3160100200011 4.20 0.2 1. 3160100200012 4.45 0.25 2. 3160100200013 ENDDATA 4 0 3160100200014 ENDSUBENT 13 0 3160100299999 SUBENT 31601003 20070727 31233160100300001 BIB 3 3 3160100300002 REACTION (13-AL-27(N,A)11-NA-24,,SIG,,FIS) 3160100300003 DECAY-DATA (11-NA-24,14.96HR,DG,1368.6,,DG,2754.0) 3160100300004 SAMPLE 99.99% Al; 0.1 mm thick; GODDFELLOW 3160100300005 ENDBIB 3 0 3160100300006 NOCOMMON 0 0 3160100300007 DATA 3 2 3160100300008 DATA ERR-T FLAG 3160100300009 MB MB NO-DIM 3160100300010 0.93 0.05 1. 3160100300011 0.98 0.06 2. 3160100300012 ENDDATA 4 0 3160100300013 ENDSUBENT 12 0 3160100399999 SUBENT 31601004 20070727 31233160100400001 BIB 3 3 3160100400002 REACTION (14-SI-28(N,P)13-AL-28,,SIG,,FIS) 3160100400003 DECAY-DATA (13-AL-28,2.24MIN,DG,1779.9) 3160100400004 SAMPLE 99% SiO2 powder: SIGMA CHEMICAL CO 3160100400005 ENDBIB 3 0 3160100400006 NOCOMMON 0 0 3160100400007 DATA 3 2 3160100400008 DATA ERR-T FLAG 3160100400009 MB MB NO-DIM 3160100400010 6.83 0.22 1. 3160100400011 6.85 0.21 2. 3160100400012 ENDDATA 4 0 3160100400013 ENDSUBENT 12 0 3160100499999 SUBENT 31601005 20070727 31233160100500001 BIB 3 3 3160100500002 REACTION (14-SI-29(N,P)13-AL-29,,SIG,,FIS) 3160100500003 DECAY-DATA (13-AL-29,6.56MIN,DG,1273.4) 3160100500004 SAMPLE 99% SiO2 powder: SIGMA CHEMICAL CO 3160100500005 ENDBIB 3 0 3160100500006 NOCOMMON 0 0 3160100500007 DATA 3 2 3160100500008 DATA ERR-T FLAG 3160100500009 MB MB NO-DIM 3160100500010 3.98 0.16 1. 3160100500011 3.98 0.20 2. 3160100500012 ENDDATA 4 0 3160100500013 ENDSUBENT 12 0 3160100599999 SUBENT 31601006 20070727 31233160100600001 BIB 3 3 3160100600002 REACTION (14-SI-30(N,A)12-MG-27,,SIG,,FIS) 3160100600003 DECAY-DATA (12-MG-27,9.46MIN,DG,843.76,,DG,1014.43) 3160100600004 SAMPLE 99% SiO2 powder: SIGMA CHEMICAL CO 3160100600005 ENDBIB 3 0 3160100600006 NOCOMMON 0 0 3160100600007 DATA 3 2 3160100600008 DATA ERR-T FLAG 3160100600009 MB MB NO-DIM 3160100600010 0.16 0.01 1. 3160100600011 0.15 0.01 2. 3160100600012 ENDDATA 4 0 3160100600013 ENDSUBENT 12 0 3160100699999 SUBENT 31601007 20070727 31233160100700001 BIB 3 3 3160100700002 REACTION (22-TI-46(N,P)21-SC-46,,SIG,,FIS) 3160100700003 DECAY-DATA (21-SC-46,83.81D,DG,889.3) 3160100700004 SAMPLE 99.99% Ti foil; 0.125mm thick; GOODFELLOW 3160100700005 ENDBIB 3 0 3160100700006 NOCOMMON 0 0 3160100700007 DATA 3 2 3160100700008 DATA ERR-T FLAG 3160100700009 MB MB NO-DIM 3160100700010 12.5 0.7 1. 3160100700011 13.4 0.9 2. 3160100700012 ENDDATA 4 0 3160100700013 ENDSUBENT 12 0 3160100799999 SUBENT 31601008 20070727 31233160100800001 BIB 3 3 3160100800002 REACTION (22-TI-47(N,P)21-SC-47,,SIG,,FIS) 3160100800003 DECAY-DATA (21-SC-47,3.35D,DG,159.38) 3160100800004 SAMPLE 99.99% Ti foil; 0.125mm thick; GOODFELLOW 3160100800005 ENDBIB 3 0 3160100800006 NOCOMMON 0 0 3160100800007 DATA 3 2 3160100800008 DATA ERR-T FLAG 3160100800009 MB MB NO-DIM 3160100800010 16.6 1.1 1. 3160100800011 17.8 1.5 2. 3160100800012 ENDDATA 4 0 3160100800013 ENDSUBENT 12 0 3160100899999 SUBENT 31601009 20070727 31233160100900001 BIB 3 3 3160100900002 REACTION (26-FE-54(N,P)25-MN-54,,SIG,,FIS) 3160100900003 DECAY-DATA (25-MN-54,312.11D,DG,834.84) 3160100900004 SAMPLE 99.99% Fe foil; 1mm thick; GOODFELLOW 3160100900005 ENDBIB 3 0 3160100900006 NOCOMMON 0 0 3160100900007 DATA 3 2 3160100900008 DATA ERR-T FLAG 3160100900009 MB MB NO-DIM 3160100900010 85.5 4.9 1. 3160100900011 91.4 5.2 2. 3160100900012 ENDDATA 4 0 3160100900013 ENDSUBENT 12 0 3160100999999 SUBENT 31601010 20070727 31233160101000001 BIB 3 3 3160101000002 REACTION (28-NI-58(N,P)27-CO-58,,SIG,,FIS) 3160101000003 DECAY-DATA (27-CO-58,70.86D,DG,810.77) 3160101000004 SAMPLE 99.0% Ni foil; 0.1mm thick; GOODFELLOW 3160101000005 ENDBIB 3 0 3160101000006 NOCOMMON 0 0 3160101000007 DATA 3 2 3160101000008 DATA ERR-T FLAG 3160101000009 MB MB NO-DIM 3160101000010 120.0 5.9 1. 3160101000011 128.0 8.8 2. 3160101000012 ENDDATA 4 0 3160101000013 ENDSUBENT 12 0 3160101099999 SUBENT 31601011 20070727 31233160101100001 BIB 3 3 3160101100002 REACTION (30-ZN-64(N,P)29-CU-64,,SIG,,FIS) 3160101100003 DECAY-DATA (29-CU-64,12.7HR,DG,1345.8) 3160101100004 SAMPLE 99.95% Zn foil, 0.25 mm thick; GOODFELLOW 3160101100005 ENDBIB 3 0 3160101100006 NOCOMMON 0 0 3160101100007 DATA 3 2 3160101100008 DATA ERR-T FLAG 3160101100009 MB MB NO-DIM 3160101100010 49.7 2.1 1. 3160101100011 53.1 4.0 2. 3160101100012 ENDDATA 4 0 3160101100013 ENDSUBENT 12 0 3160101199999 ENDENTRY 11 0 3160199999999