ENTRY 31597 20070517 31223159700000001 SUBENT 31597001 20070517 31223159700100001 BIB 16 41 3159700100002 TITLE Averaged cross sections for the reactions 3159700100003 68Zn(n,p)68gCu and 68Zn(n,p)68mCu for a 235U fission 3159700100004 neutron spectrum 3159700100005 AUTHOR (A.J.Kestelman,S.Ribeiro Guevara,M.A.Arribere, 3159700100006 I.M.Cohen) 3159700100007 INSTITUTE (3ARGCAB) 3159700100008 (3ARGARG) Universidad Tecnologica Nacional, Medrano 9513159700100009 (C1179AAQ) Buenos Aires, Argentina 3159700100010 REFERENCE (J,ARI,65,872,2007) 3159700100011 FACILITY (REAC,3ARGCAB) The RA-6 research reactor at Centro 3159700100012 Atomico Bariloche 3159700100013 SAMPLE Two different disc-shaped samples of ZnO (99.4% 3159700100014 enriched in 68Zn) were used, 1cm in diam., 0.1cm thick,3159700100015 and masses of 150 and 98 mg (83.920+-0.005 molecular 3159700100016 weight). The samples were irradiated inside 1 mm-thick 3159700100017 cadmium covers. 3159700100018 METHOD (ACTIV) The samples were irradiated on different days 3159700100019 during 30, 45, or 60 s for the studying of 3159700100020 sequential spectra. 3159700100021 The measurements were made by two methods: 3159700100022 1. Direct method 3159700100023 2. Straight line method - determination from 3159700100024 simultaneous measurement of metastable and 3159700100025 ground state cross sections. 3159700100026 PART-DET (DG) 3159700100027 INC-SOURCE (REAC) Irradiations were performed in the reactor core 3159700100028 in undisturbed U-235 fission neutron spectrum. 3159700100029 The fast neutron flux, measured during the irradiation 3159700100030 of each and all samples, varied between 1.70x10**12 3159700100031 and 1.85x10**12 n/cm2/s. 3159700100032 DECAY-MON (27-CO-58,70.86D,DG,810.76,0.9945) 3159700100033 (12-MG-27,9.458MIN,DG,843.76,0.718,DG,1014.44,0.28) 3159700100034 DETECTOR (HPGE) 67cm**3 ORTEC HPGe intrinsic-N coaxial detector 3159700100035 2.0 keV FWHM, 12.3% relative efficiency. 3159700100036 MONITOR ((MONIT1)28-NI-58(N,P)27-CO-58,,SIG,,FIS) 3159700100037 ((MONIT2)13-AL-27(N,P)12-MG-27,,SIG,,FIS) 3159700100038 MONIT-REF (,MANNHART,P,INDC(GER)-045,40,1999) 3159700100039 ERR-ANALYS (ERR-T) Uncertainty in normalization 3159700100040 STATUS (TABLE) Data from the Tbl.3 of the ref. 3159700100041 (APRVD) Entry approved by Dr. A.J.Kestelman 3159700100042 HISTORY (20070517C) 3159700100043 ENDBIB 41 0 3159700100044 COMMON 5 3 3159700100045 EN-DUMMY MONIT1 MONIT1-ERR MONIT2 MONIT2-ERR 3159700100046 MEV MB MB MB MB 3159700100047 1.5 108.5 1.4 3.914 0.070 3159700100048 ENDCOMMON 3 0 3159700100049 ENDSUBENT 48 0 3159700199999 SUBENT 31597002 20070517 31223159700200001 BIB 2 2 3159700200002 REACTION (30-ZN-68(N,P)29-CU-68-G,,SIG,,FIS)Straight line method3159700200003 DECAY-DATA (29-CU-68-G,31.1SEC,DG,1077.7,0.64,DG,1261.8,0.125) 3159700200004 ENDBIB 2 0 3159700200005 NOCOMMON 0 0 3159700200006 DATA 2 1 3159700200007 DATA ERR-T 3159700200008 MICRO-B MICRO-B 3159700200009 15.04 0.35 3159700200010 ENDDATA 3 0 3159700200011 ENDSUBENT 10 0 3159700299999 SUBENT 31597003 20070517 31223159700300001 BIB 3 5 3159700300002 REACTION (30-ZN-68(N,P)29-CU-68-M,,SIG,,FIS) 3159700300003 DECAY-DATA (29-CU-68-M,3.75MIN,DG,1340.5,0.12,DG,1077.7,0.12) 3159700300004 DG,525.9,0.733) 3159700300005 FLAG (1.) Direct method 3159700300006 (2.) Straight line method 3159700300007 ENDBIB 5 0 3159700300008 NOCOMMON 0 0 3159700300009 DATA 3 2 3159700300010 DATA ERR-T FLAG 3159700300011 MICRO-B MICRO-B NO-DIM 3159700300012 4.75 0.38 1. 3159700300013 3.69 0.30 2. 3159700300014 ENDDATA 4 0 3159700300015 ENDSUBENT 14 0 3159700399999 SUBENT 31597004 20070517 31223159700400001 BIB 2 3 3159700400002 REACTION (30-ZN-68(N,P)29-CU-68,,SIG,,FIS) Straight line method 3159700400003 DECAY-DATA (29-CU-68-G,31.1SEC,DG,1077.7,0.64,DG,1261.8,0.125) 3159700400004 (29-CU-68-M,3.75MIN,DG,1340.5,0.12,DG,1077.7,0.12) 3159700400005 ENDBIB 3 0 3159700400006 NOCOMMON 0 0 3159700400007 DATA 2 1 3159700400008 DATA ERR-T 3159700400009 MICRO-B MICRO-B 3159700400010 18.73 0.47 3159700400011 ENDDATA 3 0 3159700400012 ENDSUBENT 11 0 3159700499999 ENDENTRY 4 0 3159799999999