ENTRY 14167 20171020 14351416700000001 SUBENT 14167001 20171020 14351416700100001 BIB 8 15 1416700100002 TITLE Measurement of threshold reaction cross section 1416700100003 ratios in fission neutron fields 1416700100004 AUTHOR (R.Fleming,V.Spiegel) 1416700100005 REFERENCE (S,NUREG/CP-0004,(3),953,1979) 1416700100006 (C,77PALOALTO,2,953,1977) Preliminary data. 1416700100007 INSTITUTE (1USANBS) 1416700100008 DETECTOR (GELI) 66 cm3 detector. 1416700100009 SAMPLE Srm-1158 nickel/iron alloy foil (36.03% Ni and 63.15% 1416700100010 Fe). 1416700100011 ERR-ANALYS (ERR-SYS) Not fully investigated systematic effects 1416700100012 during the irradiation and counting. 1416700100013 (ERR-S,,1.) The purely statistic uncertainty is less 1416700100014 than 1%. 1416700100015 HISTORY (20160927C) BP 1416700100016 (20171020A) BP: Added preliminary data reference. 1416700100017 ENDBIB 15 0 1416700100018 NOCOMMON 0 0 1416700100019 ENDSUBENT 18 0 1416700199999 SUBENT 14167002 20160927 14241416700200001 BIB 6 9 1416700200002 REACTION ((28-NI-58(N,P)27-CO-58,,SIG,,FIS)/ 1416700200003 (26-FE-54(N,P)25-MN-54,,SIG,,FIS)) 1416700200004 INC-SPECT U-235 fission neutron spectrum. 1416700200005 FACILITY (REAC,1USANBS) NBS 235U cavity fission facility 1416700200006 METHOD (ACTIV,INTB) . The foils were irradiated for times of 1416700200007 from several hours to several days. 1416700200008 DECAY-DATA (27-CO-58,,DG,810.8) 1416700200009 (25-MN-54,,DG,834.8) 1416700200010 STATUS (TABLE) Table II, page 957. 1416700200011 ENDBIB 9 0 1416700200012 NOCOMMON 0 0 1416700200013 DATA 3 1 1416700200014 KT-DUMMY DATA ERR-SYS 1416700200015 MEV NO-DIM NO-DIM 1416700200016 1.32 1.346 0.03 1416700200017 ENDDATA 3 0 1416700200018 ENDSUBENT 17 0 1416700299999 SUBENT 14167003 20160927 14241416700300001 BIB 5 10 1416700300002 REACTION ((28-NI-58(N,P)27-CO-58,,SIG,,FIS)/ 1416700300003 (26-FE-54(N,P)25-MN-54,,SIG,,FIS)) 1416700300004 INC-SPECT Cf-252 fission neutron spectrum. 1416700300005 METHOD (ACTIV,INTB) 252Cf source capsule. The foils were 1416700300006 irradiated for times of from several hours to several 1416700300007 days. Two gamma rays 810.8 and 834.8 keV from 58Co 1416700300008 and 54Mn, respectively. 1416700300009 DECAY-DATA (27-CO-58,,DG,810.8) 1416700300010 (25-MN-54,,DG,834.8) 1416700300011 STATUS (TABLE) Table II, page 957. 1416700300012 ENDBIB 10 0 1416700300013 NOCOMMON 0 0 1416700300014 DATA 3 1 1416700300015 KT-DUMMY DATA ERR-SYS 1416700300016 MEV NO-DIM NO-DIM 1416700300017 1.42 1.326 0.03 1416700300018 ENDDATA 3 0 1416700300019 ENDSUBENT 18 0 1416700399999 ENDENTRY 3 0 1416799999999