ENTRY 30188 20161207 31763018800000001 SUBENT 30188001 20161207 31763018800100001 BIB 14 42 3018800100002 INSTITUTE (3ARGCNE) 3018800100003 REFERENCE (J,CJP,48,2362,1970) Full descr.,ratio to thr-act sigm.3018800100004 (C,70HELSINKI,2,589,197006) Same values,in Spanish 3018800100005 (J,NSE,48,370,197207) Comment on anomalous Zr-96 sigma 3018800100006 AUTHOR (M.D.Ricabarra,R.Turjanski,G.H.Ricabarra) 3018800100007 TITLE Anomalous 96Zr resonance integral to thermal activation3018800100008 cross-section ratio and the neutron activation 3018800100009 resonance integral of 94Zr and 96Zr 3018800100010 EXP-YEAR (1970) 3018800100011 FACILITY (REAC,3ARGCNE) 3018800100012 INC-SOURCE Internal graphite reflector of the reactor RA-1. 3018800100013 SAMPLE Mixed samples prepared from a very dilute solution 3018800100014 containing Zr and standard used for S0 determinations, 3018800100015 metallic Zr foils for resonance integral measurements. 3018800100016 METHOD Ratios of reduced capture integral to the thermal 3018800100017 capture cross section were measured using the 3018800100018 cadmium ratio technique. 3018800100019 Absorption resonance integrals were determined by 3018800100020 measuring the ratio of effective absorption cross 3018800100021 section of zirconium to Mn-55. Calibrated gamma sources3018800100022 were used to determine the absolute activities. 3018800100023 DETECTOR (GELI) Ge-Li gamma-ray spectrometer 3018800100024 MONITOR (25-MN-55(N,G)25-MN-56,,SIG) 3018800100025 Used in the determination of absorption 3018800100026 resonance integrals. Value taken from Goldberg et al., 3018800100027 BNL-325,2nd ed.,Suppl.2. 1966. 3018800100028 The S0 values (Westcott formalism) were determined 3018800100029 relative to S0=17.7 for gold. 3018800100030 STATUS (APRVD) G.Ricabarra, 22 March 1973 3018800100031 HISTORY (19721207C) 3018800100032 (20080208A) BIB section updated 3018800100033 (20161206A) VS. SF8=RNV added to resonance integrals. 3018800100034 EN-MIN,EN-NRM deleted from subent 001 and added to 3018800100035 002-007 as appropriate. 3018800100036 CORRECTION Experimental results were corrected for neutron epi- 3018800100037 thermal self-shielding,transmission of cadmium for 3018800100038 resonance neutrons,ratio of the activation of detector 3018800100039 in a Maxwellian flux to that of a 1/v detector having 3018800100040 the same thermal absorption cross section,difference of3018800100041 epithermal neutron activation to that of a 1/v detector3018800100042 below cadmium cutoff (normalized to sigma=1) and for 3018800100043 deviation from the 1/E neutron spectrum. 3018800100044 ENDBIB 42 0 3018800100045 COMMON 2 3 3018800100046 MONIT MONIT-ERR 3018800100047 B B 3018800100048 1.3300E+01 1.0000E-01 3018800100049 ENDCOMMON 3 0 3018800100050 ENDSUBENT 49 0 3018800199999 SUBENT 30188002 20161207 31763018800200001 BIB 7 30 3018800200002 REACTION ((40-ZR-96(N,G)40-ZR-97,,RI,,RNV)// 3018800200003 (40-ZR-96(N,G)40-ZR-97,,SIG)) 3018800200004 Ratio of reduced resonance integral 3018800200005 to thermal capture cross section. 3018800200006 Average value of three different determinations. 3018800200007 SAMPLE Mixture of 24 millig/cm2 zirconium and 0.02 millig/cm2 3018800200008 of gold for measurement relative to gold. 3018800200009 Metallic zirconium foils 13 millig/cm2 thick and 99.99%3018800200010 purity for the direct measurements. 3018800200011 METHOD Cadmium ratios determined by three different methods: 3018800200012 1.Relative to gold-cadmium ratio by measuring the 743.33018800200013 keV gamma-ray of Nb-97-ms and 658.1 keV gamma ray of 3018800200014 Nb-97 relative to the 412 keV gamma-ray of Au-198 3018800200015 2. Direct measurement of zirconium-cadmium ratio in a 3018800200016 reactor spectrum by measuring the 743.3keV and 658.1keV3018800200017 gamma rays of Nb-97-ms and Nb-97 respectively 3018800200018 3. Direct measurement of the zirconium cadmium ratio in3018800200019 a quasi-thermal spectrum 3018800200020 COMMENT Partial results from the three methods 3018800200021 1.Relative to gold S0=1308+-305 3018800200022 I/sigma=1160+-270 3018800200023 2. Reactor spectrum S0= 945+-40 3018800200024 I/sigma= 838+-34 3018800200025 3. Quasi-thermal spectrum S0=1009+-120 3018800200026 I/sigma= 895+-107 3018800200027 weighted average S0 value = 992+-108 3018800200028 CORRECTION Experimental results corrected for neutron epithermal 3018800200029 self shielding and for deviation from 1/e spectrum. 3018800200030 ERR-ANALYS (DATA-ERR) No information on source of uncertainty 3018800200031 STATUS (TABLE) Text (p2366) of Can.J.Phys.48(1970)2362 3018800200032 ENDBIB 30 0 3018800200033 NOCOMMON 0 0 3018800200034 DATA 4 1 3018800200035 EN-MIN-NM EN-DN DATA DATA-ERR 3018800200036 EV EV NO-DIM NO-DIM 3018800200037 0.60 0.0253 8.7900E+02 9.6000E+01 3018800200038 ENDDATA 3 0 3018800200039 ENDSUBENT 38 0 3018800299999 SUBENT 30188003 20161207 31763018800300001 BIB 6 15 3018800300002 REACTION (40-ZR-96(N,G)40-ZR-97,,RI,,RNV) 3018800300003 METHOD Effective absorption cross section of Zr determined by 3018800300004 measuring the 658.1-keV gamma ray of Nb-97 (72 min.) 3018800300005 relative to the 661.6-keV gamma ray of a calibrated 3018800300006 Cs-137 source 3018800300007 Absolute activity of manganese foils measured by 3018800300008 4pi-beta counting or by gamma activity intercalibration3018800300009 ANALYSIS Reduced integral value deduced from measured effective 3018800300010 cross sections ratio by assuming a manganese-cadmium 3018800300011 ratio of 11.2+-0.1 3018800300012 CORRECTION Applied - 10% spectrum correction. 3018800300013 Adopted thermal self-shielding factor = 0.997 3018800300014 ERR-ANALYS (DATA-ERR) Error quoted is standard deviation from the 3018800300015 measurement plus estimated systematic errors. 3018800300016 STATUS (TABLE) Text (p2368) of Can.J.Phys.48(1970)2362 3018800300017 ENDBIB 15 0 3018800300018 NOCOMMON 0 0 3018800300019 DATA 4 1 3018800300020 EN-MIN EN-NRM DATA DATA-ERR 3018800300021 EV EV B B 3018800300022 0.60 0.0253 4.9700E+00 5.0000E-01 3018800300023 ENDDATA 3 0 3018800300024 ENDSUBENT 23 0 3018800399999 SUBENT 30188004 20161207 31763018800400001 BIB 3 6 3018800400002 REACTION (40-ZR-96(N,G)40-ZR-97,,SIG) 3018800400003 At energy E0= 0.025 eV. 3018800400004 ERR-ANALYS (DATA-ERR) No information on source of uncertainty 3018800400005 STATUS (TABLE) Text (p2368) of Can.J.Phys.48(1970)2362 3018800400006 (DEP,30188002) I'/sigma0 3018800400007 (DEP,30188003) I' 3018800400008 ENDBIB 6 0 3018800400009 NOCOMMON 0 0 3018800400010 DATA 3 1 3018800400011 EN DATA DATA-ERR 3018800400012 EV MB MB 3018800400013 0.0253 5.7000E+00 1.0000E+00 3018800400014 ENDDATA 3 0 3018800400015 ENDSUBENT 14 0 3018800499999 SUBENT 30188005 20161207 31763018800500001 BIB 6 15 3018800500002 REACTION ((40-ZR-94(N,G)40-ZR-95,,RI,,RNV)// 3018800500003 (40-ZR-94(N,G)40-ZR-95,,SIG)) 3018800500004 Ratio of reduced resonance integral 3018800500005 to thermal capture cross section 3018800500006 METHOD Cadmium ratio determined relative to Zr-96 by measuring3018800500007 the 756.6-keV and 724-keV gamma rays of Zr-95 relative 3018800500008 to the 658.1-keV and 743.3-keV gamma rays from decay 3018800500009 of Zr-96 3018800500010 COMMENT Measured S0 value was S0=6.62+-0.06 3018800500011 CORRECTION Applied a - 13% spectrum correction 3018800500012 The epithermal self-shielding factor and transmission 3018800500013 of cadmium for resonance neutrons were taken equal to 3018800500014 unity. 3018800500015 ERR-ANALYS (DATA-ERR) No information on source of uncertainty 3018800500016 STATUS (TABLE) Text (p2368) of Can.J.Phys.48(1970)2362 3018800500017 ENDBIB 15 0 3018800500018 NOCOMMON 0 0 3018800500019 DATA 4 1 3018800500020 EN-MIN-NM EN-DN DATA DATA-ERR 3018800500021 EV EV NO-DIM NO-DIM 3018800500022 0.60 0.0253 5.8700E+00 5.0000E-02 3018800500023 ENDDATA 3 0 3018800500024 ENDSUBENT 23 0 3018800599999 SUBENT 30188006 20161207 31763018800600001 BIB 4 12 3018800600002 REACTION (40-ZR-94(N,G)40-ZR-95,,RI,,RNV) 3018800600003 METHOD The sum of 724 keV and 756.6 keV gamma ray activities 3018800600004 (98% of Zr-96 beta-decay) was measured relative 3018800600005 to the 743.3-keV Nb-97-ms photopeak which represents 3018800600006 95.7% of the total Zr-96 disintegrations. 3018800600007 Effective cross section ratios of Zr-96 and Zr-94 to 3018800600008 Mn-55 taken as 0.0359+-0.0008 and 0.0714+-0.0027 3018800600009 respectively. 3018800600010 ERR-ANALYS (DATA-ERR) Error takes into account the experimental 3018800600011 standard deviation plus systematic errors (ERR-1) 3018800600012 (ERR-1) estimated systematic errors 3018800600013 STATUS (TABLE) Text (p2369) of Can.J.Phys.48(1970)2362 3018800600014 ENDBIB 12 0 3018800600015 NOCOMMON 0 0 3018800600016 DATA 5 1 3018800600017 EN-MIN EN-NRM DATA DATA-ERR ERR-1 3018800600018 EV EV B B PER-CENT 3018800600019 0.60 0.0253 3.6900E-01 3.7000E-02 8.0 3018800600020 ENDDATA 3 0 3018800600021 ENDSUBENT 20 0 3018800699999 SUBENT 30188007 20161207 31763018800700001 BIB 3 6 3018800700002 REACTION (40-ZR-94(N,G)40-ZR-95,,SIG) 3018800700003 At energy E0=0.025eV 3018800700004 ERR-ANALYS (DATA-ERR) No information on source of uncertainty 3018800700005 STATUS (TABLE) Text (p2369) of Can.J.Phys.48(1970)2362 3018800700006 (DEP,30188005) I'/sigma0 3018800700007 (DEP,30188006) I' 3018800700008 ENDBIB 6 0 3018800700009 NOCOMMON 0 0 3018800700010 DATA 3 1 3018800700011 EN DATA DATA-ERR 3018800700012 EV B B 3018800700013 0.0253 6.3000E-02 8.0000E-03 3018800700014 ENDDATA 3 0 3018800700015 ENDSUBENT 14 0 3018800799999 ENDENTRY 7 0 3018899999999