ENTRY 14150 20140417 14011415000000001 SUBENT 14150001 20140417 14011415000100001 BIB 13 57 1415000100002 TITLE Cross section measurements for neutron-induced 1415000100003 reactions off C, Al, SiO2, Si and Au producing 1415000100004 relatively short-lived radionuclides at neutron 1415000100005 energies between 70 and 160 MeV 1415000100006 AUTHOR (J.M.Sisterson) 1415000100007 INSTITUTE (1USAMGH) 1415000100008 REFERENCE (J,NIM/B,261,993,2007) 1415000100009 FACILITY (CYCLO,3SAFITH) iThemba LABS,Somerset West, 1415000100010 South Africa 1415000100011 INC-SOURCE (P-BE) A thin 5 mm thick Be target was used to 1415000100012 produce 73.5 MeV neutrons, for all other neutron 1415000100013 energies the Be target was 10 mm. 1415000100014 INC-SPECT Quasi-monoenergetic neutron beam. 1415000100015 Irradiation parameters: 1415000100016 Neutron Primary neutron Irradiation 1415000100017 energy fluence neutrons time 1415000100018 MeV cm2 (h) 1415000100019 70.7 9.35 +- 0.65E+10 38.98 1415000100020 73.5 3.08 +- 0.24E+10 47.7 1415000100021 110.8 6.63 +- 0.45E+10 40.72 1415000100022 111.8 6.87 +- 0.42E+10 47.08 1415000100023 112.0 4.59 +- 0.38E+10 22.32 1415000100024 112.2 7.2 +- 0.75E+10 32.4 1415000100025 151.6 1.1 +- 0.07E+10 38.47 1415000100026 SAMPLE SiO2 targets - 1.5 cm in diameter and 0.6 cm thick 1415000100027 (weight 2.3 g) or 5 x 5 cm**2 and 0.3 cm thick 1415000100028 (wight 16.6 g), the natSi targets 1.5 cm in diameter 1415000100029 and 0.077 cm thick (weight 0.33 g) 1415000100030 The monitor foils were 1.5 cm in diameter, 1415000100031 the natural C and Al monitor foils were 0.1 cm thick 1415000100032 with weight of 0.34 g and 0.46 g,respectively, 1415000100033 Au monitor foils were 0.025 cm thick and weighed 0.9 g.1415000100034 The purity of all materials was 99.9%. 1415000100035 DETECTOR (HPGE) 1415000100036 METHOD (ACTIV,STTA) Target stacks were designed such that the 1415000100037 neutron beam transmission through the targets was >90% 1415000100038 and were wrapped in Al foil for stability. 1415000100039 A target stack could have up to two target materials. 1415000100040 Two identical target stacks were irradiated in beam 1415000100041 lines at 0. and 16. degr. to the incident proton beam 1415000100042 direction. The yield at an unique neutron energy was 1415000100043 obtained by subtracting the yield measured at 16.degr. 1415000100044 (after suitable normalization) from that 1415000100045 measured at 0. degr. 1415000100046 Many different elements were used as monitor foils 1415000100047 including nat-C, Al and Au, to identify good 1415000100048 monitor reactions. 1415000100049 STATUS (TABLE) Tbl.3 from NIM/B,261,993,2007 1415000100050 ERR-ANALYS (ERR-T) Uncertainties were added in quadrature 1415000100051 (ERR-1) number of target atoms 2% 1415000100052 (ERR-2) detector efficiency 5% 1415000100053 (ERR-3,6.4,10.4) neutron fluence 6.4 to 10.4% 1415000100054 * statistical uncertainty 1415000100055 HISTORY (20071122C) 1415000100056 (20120814A) SD: BIB update. DATA-ERR renamed to ERR-T 1415000100057 in Subents 2-8. 1415000100058 (20140417A) SD: REACTION code corrected in Subent 7,8. 1415000100059 ENDBIB 57 0 1415000100060 COMMON 2 3 1415000100061 ERR-1 ERR-2 1415000100062 PER-CENT PER-CENT 1415000100063 2.0 5.0 1415000100064 ENDCOMMON 3 0 1415000100065 ENDSUBENT 64 0 1415000199999 SUBENT 14150002 20120814 13851415000200001 BIB 2 2 1415000200002 REACTION (6-C-0(N,X)4-BE-7,,SIG) 1415000200003 DECAY-DATA (4-BE-7,53.29D,DG,476.0,0.1035) 1415000200004 ENDBIB 2 0 1415000200005 NOCOMMON 0 0 1415000200006 DATA 4 1 1415000200007 EN EN-ERR DATA ERR-T 1415000200008 MEV MEV MB MB 1415000200009 112.0 4.1 9.6 4.1 1415000200010 ENDDATA 3 0 1415000200011 ENDSUBENT 10 0 1415000299999 SUBENT 14150003 20120814 13851415000300001 BIB 2 2 1415000300002 REACTION (14-SI-0(N,X)11-NA-24,,SIG) 1415000300003 DECAY-DATA (11-NA-24,14.959HR,DG,1369.0,1.0) 1415000300004 ENDBIB 2 0 1415000300005 NOCOMMON 0 0 1415000300006 DATA 4 1 1415000300007 EN EN-ERR DATA ERR-T 1415000300008 MEV MEV MB MB 1415000300009 112.0 4.1 10.6 1.9 1415000300010 ENDDATA 3 0 1415000300011 ENDSUBENT 10 0 1415000399999 SUBENT 14150004 20120814 13851415000400001 BIB 2 2 1415000400002 REACTION (14-SI-0(N,X)11-NA-22,,SIG) 1415000400003 DECAY-DATA (11-NA-22,2.6019YR,DG,1275.0,0.99934) 1415000400004 ENDBIB 2 0 1415000400005 NOCOMMON 0 0 1415000400006 DATA 4 3 1415000400007 EN EN-ERR DATA ERR-T 1415000400008 MEV MEV MB MB 1415000400009 70.7 5.8 8.8 1.5 1415000400010 110.8 4.2 8.9 1.7 1415000400011 112.0 4.1 8.9 1.7 1415000400012 ENDDATA 5 0 1415000400013 ENDSUBENT 12 0 1415000499999 SUBENT 14150005 20120814 13851415000500001 BIB 2 2 1415000500002 REACTION (13-AL-27(N,X)11-NA-22,,SIG) 1415000500003 DECAY-DATA (11-NA-22,2.6019YR,DG,1275.0,0.99934) 1415000500004 ENDBIB 2 0 1415000500005 NOCOMMON 0 0 1415000500006 DATA 4 2 1415000500007 EN EN-ERR DATA ERR-T 1415000500008 MEV MEV MB MB 1415000500009 110.8 4.2 15.2 5.5 1415000500010 112.0 4.1 8.2 1.9 1415000500011 ENDDATA 4 0 1415000500012 ENDSUBENT 11 0 1415000599999 SUBENT 14150006 20120814 13851415000600001 BIB 2 2 1415000600002 REACTION (13-AL-27(N,X)11-NA-24,,SIG) 1415000600003 DECAY-DATA (11-NA-24,14.959HR,DG,1369.0,1.0) 1415000600004 ENDBIB 2 0 1415000600005 NOCOMMON 0 0 1415000600006 DATA 4 2 1415000600007 EN EN-ERR DATA ERR-T 1415000600008 MEV MEV MB MB 1415000600009 73.5 2.8 22.9 2.7 1415000600010 112.0 4.1 23.1 2.9 1415000600011 ENDDATA 4 0 1415000600012 ENDSUBENT 11 0 1415000699999 SUBENT 14150007 20140417 14011415000700001 BIB 3 4 1415000700002 REACTION (79-AU-197(N,4N)79-AU-194,,SIG) 1415000700003 DECAY-DATA (79-AU-194-G,38.02HR,DG,328.5,0.6) 1415000700004 HISTORY (20140417A) SD: SF1=Au-198 -> Au-197, SF3=5N -> 4N in 1415000700005 REACTION code (confirmed by J.M.Sisterson, 2013-06-15) 1415000700006 ENDBIB 4 0 1415000700007 NOCOMMON 0 0 1415000700008 DATA 4 5 1415000700009 EN EN-ERR DATA ERR-T 1415000700010 MEV MEV MB MB 1415000700011 70.7 5.8 245.0 74.0 1415000700012 73.5 2.8 200.0 22.0 1415000700013 110.8 4.2 177.0 32.0 1415000700014 112.0 4.1 168.0 29.0 1415000700015 151.6 3.4 141.0 22.0 1415000700016 ENDDATA 7 0 1415000700017 ENDSUBENT 16 0 1415000799999 SUBENT 14150008 20140417 14011415000800001 BIB 3 4 1415000800002 REACTION (79-AU-197(N,2N)79-AU-196,,SIG) 1415000800003 DECAY-DATA (79-AU-196-G,6.183D,DG,333.0,0.229) 1415000800004 HISTORY (20140417A) SD: SF1=Au-198 -> Au-197, SF3=3N -> 2N in 1415000800005 REACTION code (confirmed by J.M.Sisterson, 2013-06-15) 1415000800006 ENDBIB 4 0 1415000800007 NOCOMMON 0 0 1415000800008 DATA 4 5 1415000800009 EN EN-ERR DATA ERR-T 1415000800010 MEV MEV MB MB 1415000800011 70.7 5.8 215.0 44.0 1415000800012 73.5 2.8 220.0 24.0 1415000800013 110.8 4.2 154.0 29.0 1415000800014 112.0 4.1 143.0 29.0 1415000800015 151.6 3.4 167.0 25.0 1415000800016 ENDDATA 7 0 1415000800017 ENDSUBENT 16 0 1415000899999 ENDENTRY 8 0 1415099999999