ENTRY 12597 19830808 00001259700000001 SUBENT 12597001 19830808 00001259700100001 BIB 7 11 1259700100002 INSTITUTE (1USAMTR) 1259700100003 REFERENCE (R,IDO-16744,62) 1259700100004 AUTHOR (C.H.HOGG,L.D.WEBER,E.C.YATES) 1259700100005 TITLE THERMAL NEUTRON CROSS SECTIONS OF THE CO-58 ISOMERS AND1259700100006 THE EFFECT ON FAST FLUX MEASUREMENTS USING NICKEL. 1259700100007 DETECTOR GAMMAS MEASURED WITH EITHER A MULTI-CHANNEL PULSE 1259700100008 HEIGHT ANALYZER OR A CALIBRATED HIGH PRESSURE 1259700100009 IONIZATION CHAMBER. 1259700100010 ERR-ANALYS ERRORS BASED ON INTERNAL CONSISTENCY 1259700100011 HISTORY (780701C) 1259700100012 (820827A) INSTITUTE,DECAY-DATA CORRECTED. 1259700100013 ENDBIB 11 0 1259700100014 NOCOMMON 0 0 1259700100015 ENDSUBENT 14 0 1259700199999 SUBENT 12597002 19780324 00001259700200001 BIB 7 11 1259700200002 REACTION (27-CO-58(N,G)27-CO-59,,SIG) 1259700200003 METHOD (BURN) BURN-UP 1259700200004 N-SOURCE (REAC) ENGINEERING TEST REACTOR 1259700200005 SAMPLE 20 MIL NI WIRE WAS IRRADIATED FOR 20-40 DAYS.AFTER 1259700200006 DECAY OF THE 9.1 HR.ISOMER, THE SAMPLE WAS RE- 1259700200007 IRRADIATED IN THE PRESENCE OF AN ADDITIONAL NI 1259700200008 SAMPLE USED TO MONITER THE BUILD UP OF CO-58.THIS 1259700200009 SECOND IRRADIATION LASTED 10-20 DAYS. 1259700200010 ASSUMED (ASSUM,28-NI-58(N,P)27-CO-58-G,,SIG,,FIS) 1259700200011 DECAY-DATA (27-CO-58-G,71.3D,EC) 1259700200012 MONITOR (27-CO-59(N,G)27-CO-60,,SIG) 1259700200013 ENDBIB 11 0 1259700200014 NOCOMMON 0 0 1259700200015 DATA 4 1 1259700200016 EN DATA DATA-ERR ASSUM 1259700200017 EV B B MB 1259700200018 0.0253 1650. 150. 61. 1259700200019 ENDDATA 3 0 1259700200020 ENDSUBENT 19 0 1259700299999 SUBENT 12597003 19780324 00001259700300001 BIB 6 11 1259700300002 REACTION (27-CO-58-M(N,G)27-CO-59,,SIG,,MXW) 1259700300003 N-SOURCE (REAC) VH-2 MTR-MATERIALS TESTING REACTOR WITH 1259700300004 CADMIUM RATIO 10. 1259700300005 METHOD IRRADIATION OF BARE AND CD-COVERED NI SAMPLE IN THE 1259700300006 SAME FAST AND THERMAL N FLUX IN A REGION WHERE THE 1259700300007 THERMAL FLUX IS KNOWN, USING DIFFERENCE IN ACTIVITIES 1259700300008 AFTER THE 9.1 HR ACTIVITY HAS DECAYED. IRRADIATION 1259700300009 FOR 24 HOURS. 1259700300010 DECAY-DATA (27-CO-58-M,9.1HR,DG,805.,.979,DG,810.,.016) 1259700300011 MONITOR (27-CO-59(N,G)27-CO-60,,SIG) 1259700300012 ASSUMED (ASSUM,28-NI-58(N,P)27-CO-58-M,,SIG,,FIS) 1259700300013 ENDBIB 11 0 1259700300014 NOCOMMON 0 0 1259700300015 DATA 4 1 1259700300016 EN-DUMMY DATA DATA-ERR ASSUM 1259700300017 EV B B MB 1259700300018 0.0253 140. +0312. +0331. 1259700300019 ENDDATA 3 0 1259700300020 ENDSUBENT 19 0 1259700399999 SUBENT 12597004 19780324 00001259700400001 BIB 2 2 1259700400002 REACTION (27-CO-58-M(N,G)27-CO-59,,RI) 1259700400003 MONITOR (27-CO-59(N,G)27-CO-60,,RI) 1259700400004 ENDBIB 2 0 1259700400005 NOCOMMON 0 0 1259700400006 DATA 3 1 1259700400007 EN-MIN DATA MONIT 1259700400008 EV B B 1259700400009 0.5 550. +0374. 1259700400010 ENDDATA 3 0 1259700400011 ENDSUBENT 10 0 1259700499999 SUBENT 12597005 19830808 00001259700500001 BIB 6 12 1259700500002 REACTION (27-CO-58-M(N,G)27-CO-59,,SIG,,SPA) 1259700500003 N-SOURCE (REAC) VH-2 MTR REACTOR.CD RATIO 10. 1259700500004 METHOD (BURN) BURN-UP OF 9.1 HR. CO-58 IN THERMAL N FLUX. 1259700500005 IRRADIATED TWO NI SAMPLES IN CONTACT WITH EACH OTHER 1259700500006 UNDER A CD SHEATH. THEN RE-IRRADIATED ONE SAMPLE IN 1259700500007 CONTACT WITH A THIRD NI SAMPLE AS WELL AS A CO-AL 1259700500008 FLUX MONITER. COUNTING WAS OF EACH CO-58 SPECIFIC 1259700500009 ACTIVITIES WITHOUT CHEMICAL SEPARATION AND AFTER 1259700500010 THE 9.1 HR ISOMER HAD DECAYED. 1259700500011 DECAY-DATA (27-CO-58-M,9.1HR,DG,805.,.979,DG,810.,.016) 1259700500012 ASSUMED (ASSUM,28-NI-58(N,P)27-CO-58-M,,SIG,,FIS) 1259700500013 MONITOR (27-CO-59(N,G)27-CO-60,,SIG) 1259700500014 ENDBIB 12 0 1259700500015 NOCOMMON 0 0 1259700500016 DATA 4 1 1259700500017 EN-DUMMY DATA DATA-ERR ASSUM 1259700500018 EV B B MB 1259700500019 0.0253 170. +0312. +0331. 1259700500020 ENDDATA 3 0 1259700500021 ENDSUBENT 20 0 1259700599999 ENDENTRY 5 0 1259799999999