ENTRY 30832 20130709 31603083200000001 SUBENT 30832001 20130709 31603083200100001 BIB 16 37 3083200100002 TITLE Measurements of average fission neutron cross sections 3083200100003 for (n,p) reactions of titanium by activation method 3083200100004 AUTHOR (M.S.Son, H.J.Kim, H.I.Bak) 3083200100005 INSTITUTE (3KORKOR) Ewha Women's University 3083200100006 (3KORSEO) 3083200100007 REFERENCE (J,KPS,1,51,1968) 3083200100008 FACILITY (REAC,3KORSEO) Triga-Mark II reactor 3083200100009 INC-SOURCE (REAC) Uranium fuel rods in the core 3083200100010 INC-SPECT The uranium fission neutron spectrum is disturbed even 3083200100011 before reaching the light water moderator by the fuel 3083200100012 rod itself in which uranium (8% wt., 20% enriched) is 3083200100013 dispersed homogeneously in zirconium hydride (91% wt. 3083200100014 Zr, and 1% wt. H). However, taking into account the 3083200100015 agreement of the two values, i.e., the measured 3083200100016 fission neutron flux using the well accepted cross 3083200100017 section of 105 mb for the Ni-58(n,p)Co-58 monitor 3083200100018 reaction and the flux calculated by General Atomic, it 3083200100019 can probably be concluded that the spectrum at the 3083200100020 midpoint of the central thimble is not disturbed 3083200100021 significantly from the unmoderated fission neutron 3083200100022 spectrum for the average cross section measurement. 3083200100023 SAMPLE (28-NI-58,NAT=0.679) Nickel foil: 99.99% purity, 3083200100024 0.11 mm thickness 3083200100025 DETECTOR (NAICR) A 3 inch x 3 inch NaI(Tl) scintillation 3083200100026 spectrometer. 3083200100027 The energy resolution of the detector checked with the 3083200100028 0.662 MeV gamma-ray of Cs-137 was 8.9%. 3083200100029 METHOD (ACTIV) Irradiated for 7 hours 3083200100030 at a power level of 100 kW 3083200100031 (GSPEC) after a cooling interval of about 5 days 3083200100032 MONITOR ((MONIT)28-NI-58(N,P)27-CO-58,,SIG,,FIS) 105 mb 3083200100033 DECAY-MON (27-CO-58-G,71.3D,DG,805.0) 3083200100034 MONIT-REF ((MONIT),C.E.Mellish,J,NUC,19,114,1961) 3083200100035 ERR-ANALYS (DATA-ERR) Standard error. 3083200100036 No information on source of uncertainties 3083200100037 STATUS (TABLE) Data taken from publication, Table 3 3083200100038 HISTORY (20130709C) S.C.Yang 3083200100039 ENDBIB 37 0 3083200100040 COMMON 2 3 3083200100041 KT-DUMMY MONIT 3083200100042 MEV MB 3083200100043 1.32 105. 3083200100044 ENDCOMMON 3 0 3083200100045 ENDSUBENT 44 0 3083200199999 SUBENT 30832002 20130709 31603083200200001 BIB 3 5 3083200200002 REACTION (22-TI-46(N,P)21-SC-46,,SIG,,FIS) 3083200200003 DECAY-DATA (21-SC-46-G,84.D,DG,885.,, 3083200200004 DG,1119.) 3083200200005 SAMPLE (22-TI-46,NAT=0.0793) Titanium: 95% purity, 3083200200006 3.5 mm diameter, 21~46 mg weight 3083200200007 ENDBIB 5 0 3083200200008 NOCOMMON 0 0 3083200200009 DATA 2 1 3083200200010 DATA DATA-ERR 3083200200011 MB MB 3083200200012 11.4 0.9 3083200200013 ENDDATA 3 0 3083200200014 ENDSUBENT 13 0 3083200299999 SUBENT 30832003 20130709 31603083200300001 BIB 3 4 3083200300002 REACTION (22-TI-47(N,P)21-SC-47,,SIG,,FIS) 3083200300003 DECAY-DATA (21-SC-47,3.43D,DG,155.) 3083200300004 SAMPLE (22-TI-47,NAT=0.0728) Titanium: 95% purity, 3083200300005 3.5 mm diameter, 21~46 mg weight 3083200300006 ENDBIB 4 0 3083200300007 NOCOMMON 0 0 3083200300008 DATA 2 1 3083200300009 DATA DATA-ERR 3083200300010 MB MB 3083200300011 19.7 1.0 3083200300012 ENDDATA 3 0 3083200300013 ENDSUBENT 12 0 3083200399999 SUBENT 30832004 20130709 31603083200400001 BIB 3 6 3083200400002 REACTION (22-TI-48(N,P)21-SC-48,,SIG,,FIS) 3083200400003 DECAY-DATA (21-SC-48,1.82D,DG,990.,, 3083200400004 DG,1040.,, 3083200400005 DG,1314.) 3083200400006 SAMPLE (22-TI-48,NAT=0.7394) Titanium: 95% purity, 3083200400007 3.5 mm diameter, 21~46 mg weight 3083200400008 ENDBIB 6 0 3083200400009 NOCOMMON 0 0 3083200400010 DATA 2 1 3083200400011 DATA DATA-ERR 3083200400012 MB MB 3083200400013 0.28 0.02 3083200400014 ENDDATA 3 0 3083200400015 ENDSUBENT 14 0 3083200499999 ENDENTRY 4 0 3083299999999