ENTRY 30128 20161207 31763012800000001 SUBENT 30128001 20161207 31763012800100001 BIB 16 77 3012800100002 TITLE Neutron activation resonance integrals of Zn-64,Zn-68, 3012800100003 Rb-85,Mo-100,Ru-102,In-113,Sb-123 and Hf-180 3012800100004 AUTHOR (M.D.Ricabarra,R.Turjanski,G.H.Ricabarra) 3012800100005 INSTITUTE (3ARGCNE) 3012800100006 REFERENCE (J,CJP,47,2031,196910)Full dscr.,Ratio to thr-abs sigma3012800100007 (R,CNEA-282,1970) same as CJP,47,2031,196910,in Spanish3012800100008 (C,70HELSINKI,2,589,197006) Same values 3012800100009 (P,INDC(ARG)-3,7,1972) Brief comment on Mo-100 res-int 3012800100010 FACILITY (REAC,3ARGCNE) RA-1 3012800100011 SAMPLE Solution containing standard and unknown in the desired3012800100012 proportions.Aliquots of 0.1 ml were dried on small 3012800100013 pieces of filter paper and sealed into plastic bags. 3012800100014 Total diameter less than 1cm. 3012800100015 MONITOR All S0 values were determined relative to S0=17.7 for 3012800100016 gold,but for activities with half-lives of about an 3012800100017 hour or less In-115 was used as a secondary standard 3012800100018 with S0=18.7+-0.1 determined relative to gold. 3012800100019 For activities with half-lives longer than 10 days the 3012800100020 isotopes Zn-64 and Se-74 were selected as secondary 3012800100021 standard,which by neutron capture produce Zn-65(245 d) 3012800100022 and Se-75 (120 days). Cadmium ratios of Se-74 and Zn-643012800100023 measured relative to gold 3012800100024 INC-SOURCE (REAC)Central reflector and thermal column of react.RA13012800100025 Flux in the reflector position was 2x10**12 n/cm2xs 3012800100026 and in the thermal column 10**11 n/cm2xs 3012800100027 METHOD Pairs of samples containing the same proportions of 3012800100028 unknown element and standard,in order to give approxi- 3012800100029 mately equal unknown and standard gamma-ray intensities3012800100030 in the gamma-ray spectrum,were irradiated bare and Cd 3012800100031 covered(cadmium ratio method) or in two neutron spectra3012800100032 with widely different resonance neutron fractions (two 3012800100033 spectrum method).The gamma-ray spectra of the two 3012800100034 samples were then measured and the relative number of 3012800100035 counts in the photopeaks calculated.Both methods give 3012800100036 the relative ratio of resonance-to-thermal capture 3012800100037 for unknown and standard. Only ratios of ratios were 3012800100038 measured,except for measurement of the cadmium ratio to3012800100039 gold,to obtain epithermal spectral index of the neutron3012800100040 spectra. Measurements were made only on well-resolved 3012800100041 and well separated peaks. 3012800100042 Gold-cadmium ratio measurement at the irradiation site 3012800100043 was r(Au)=1.674+-0.003,which gave an epithermal index 3012800100044 of 0.0805+-0.0002. 3012800100045 DETECTOR (GELI)Encapsulated Li-Ge diode with an effective volume3012800100046 of 5 cm3 and a resolution of 2.5 keV FWHM for the 3012800100047 Gd-153 gamma rays at 96.7 and 103.4 keV. 3012800100048 ANALYSIS Parameter measured was S0,equal to 2/sqrt(Pi) times the3012800100049 ratio of the reduced resonance integral to the thermal 3012800100050 capture cross section. The S0 values were obtained 3012800100051 through the cadmium ratios. 3012800100052 Unknown cross sections assumed to be 1/V below cadmium 3012800100053 cutoff. Transmission of cadmium for resonance neutrons 3012800100054 calculated with the infinite slab approximation,using 3012800100055 the absorption cross section as a transmission cross 3012800100056 section 3012800100057 CORRECTION Experimental results were corrected for neutron 3012800100058 epithermal self-shielding,for transmission of cadmium 3012800100059 for resonance neutrons and for the deviation of the 3012800100060 detector activation in a Maxwellian flux to that of a 3012800100061 1/V detector having the same thermal absorption cross 3012800100062 section 3012800100063 ERR-ANALYS (DATA-ERR) Errors assigned take into account the 3012800100064 standard error of the average value of the ratio of 3012800100065 cadmium ratios of the standard and unknown obtained 3012800100066 from several irradiations the systematic error 3012800100067 introduced by resonance parameters of the standard 3012800100068 is not included 3012800100069 COMMENT Thermal absorption cross sections taken from Hughes and3012800100070 Schwarz (BNL-325 2Nd ed. 1958) 3012800100071 STATUS (APRVD) G.Ricabarra, 22 March 1973 3012800100072 HISTORY (19721205C) 3012800100073 (19880524A) TMK. Change iso-quant to reaction and 3012800100074 standard to monitor 3012800100075 (20080208A) BIB section updated 3012800100076 (20161206A) VS. EN-MIN,EN-NRM->EN-MIN-NM1,EN-DM1, 3012800100077 EN-MIN-NM2 and EN-DM2 added in subent 001. 3012800100078 SF8=RNV added to resonance integrals in all subents. 3012800100079 ENDBIB 77 0 3012800100080 COMMON 4 3 3012800100081 EN-MIN-NM 1EN-DN 1EN-MIN 2EN-NRM 2 3012800100082 EV EV EV EV 3012800100083 0.60 0.0253 0.60 0.0253 3012800100084 ENDCOMMON 3 0 3012800100085 ENDSUBENT 84 0 3012800199999 SUBENT 30128002 20161207 31763012800200001 BIB 6 15 3012800200002 REACTION 1((30-ZN-64(N,G)30-ZN-65,,RI,,RNV)// 3012800200003 (30-ZN-64(N,G)30-ZN-65,,SIG)) 3012800200004 2(30-ZN-64(N,G)30-ZN-65,,RI,,RNV) 3012800200005 Reduced resonance integral and ratio to thermal 3012800200006 absorption cross section 3012800200007 MONITOR 2(30-ZN-64(N,G)30-ZN-65,,SIG) 3012800200008 at energy E0=0.0253 eV. Taken from 3012800200009 Beckurts and Wirtz (Neutron Physics,1964) 3012800200010 METHOD The 1.114 MeV gamma ray of Zn-65 was measured relative 3012800200011 to the 411.8 keV gold gamma ray 3012800200012 CORRECTION Spectrum correction was calculated to be - 12% 3012800200013 COMMENT Measured S0 value was S0=2.06+-0.03. Good agreement 3012800200014 with theory and with previous experimental result by 3012800200015 Brune and Jirlow (JNE/ab 17 350 1963) 3012800200016 STATUS (TABLE) Table IV of 70HELSINKI,2,589,1970 3012800200017 ENDBIB 15 0 3012800200018 NOCOMMON 0 0 3012800200019 DATA 6 1 3012800200020 DATA 1DATA-ERR 1DATA 2DATA-ERR 2MONIT 2MONIT-ERR 23012800200021 NO-DIM NO-DIM B B B B 3012800200022 1.83 0.03 0.86 0.09 0.47 0.05 3012800200023 ENDDATA 3 0 3012800200024 ENDSUBENT 23 0 3012800299999 SUBENT 30128003 20161207 31763012800300001 BIB 6 14 3012800300002 REACTION 1((30-ZN-68(N,G)30-ZN-69,,RI,,RNV)// 3012800300003 (30-ZN-68(N,G)30-ZN-69,,SIG)) 3012800300004 2(30-ZN-68(N,G)30-ZN-69,,RI,,RNV) 3012800300005 reduced resonance integral and ratio to thermal 3012800300006 absorption cross section 3012800300007 MONITOR 2(30-ZN-68(N,G)30-ZN-69,,SIG) at energy e0=0.25 eV 3012800300008 METHOD the 438 keV gamma ray of Zn-69-ms was measured relative3012800300009 to the 411.8 keV Au gamma ray,supposing equal isomeric3012800300010 yield ratio for thermal and epithermal neutrons. 3012800300011 CORRECTION Self-shielding and cadmium shielding of the main 3012800300012 resonance were negligible. Applied - 10% spectrum 3012800300013 correction 3012800300014 COMMENT Measured S0 value was S0=3.72+-0.14 3012800300015 STATUS 2(TABLE) Table IV of Can.J.Phys.47(1969)2031 3012800300016 ENDBIB 14 0 3012800300017 NOCOMMON 0 0 3012800300018 DATA 6 1 3012800300019 DATA 1DATA-ERR 1DATA 2DATA-ERR 2MONIT 2MONIT-ERR 23012800300020 NO-DIM NO-DIM B B B B 3012800300021 3.30 0.12 3.61 0.51 1.095 0.150 3012800300022 ENDDATA 3 0 3012800300023 ENDSUBENT 22 0 3012800399999 SUBENT 30128004 20161207 31763012800400001 BIB 7 17 3012800400002 REACTION 1((37-RB-85(N,G)37-RB-86,,RI,,RNV)// 3012800400003 (37-RB-85(N,G)37-RB-86,,SIG)) 3012800400004 2(37-RB-85(N,G)37-RB-86,,RI,,RNV) 3012800400005 reduced resonance integral and ratio to thermal 3012800400006 absorption cross section 3012800400007 MONITOR 2(37-RB-85(N,G)37-RB-86,,SIG) 3012800400008 at energy E0=0.0253 eV. Taken from Keish, 3012800400009 PR 129 769 1963 3012800400010 METHOD The 1080keV gamma ray of Rb-86 (18.7 Days) was measured3012800400011 relative to the 1114 keV gamma ray of Zn-65 3012800400012 SAMPLE Mixture of 3.17 millig/cm2 of Rb and 7.12 millig/cm2 3012800400013 of zinc 3012800400014 CORRECTION Self-shielding and cadmium shielding considered as 3012800400015 negligible. Applied - 9.8% spectrum correction 3012800400016 COMMENT Measured S0 value was S0=18.4+-0.6,In disagreement with3012800400017 calculated value 3012800400018 STATUS (TABLE) Table IV of 70HELSINKI,2,589,1970 3012800400019 ENDBIB 17 0 3012800400020 NOCOMMON 0 0 3012800400021 DATA 6 1 3012800400022 DATA 1DATA-ERR 1DATA 2DATA-ERR 2MONIT 2MONIT-ERR 23012800400023 NO-DIM NO-DIM B B B B 3012800400024 16.31 0.53 7.34 0.68 0.45 0.04 3012800400025 ENDDATA 3 0 3012800400026 ENDSUBENT 25 0 3012800499999 SUBENT 30128005 20161207 31763012800500001 BIB 7 16 3012800500002 REACTION 1((42-MO-100(N,G)42-MO-101,,RI,,RNV)// 3012800500003 (42-MO-100(N,G)42-MO-101,,SIG)) 3012800500004 2(42-MO-100(N,G)42-MO-101,,RI,,RNV) 3012800500005 reduced resonance integral and ratio to thermal capture3012800500006 cross section 3012800500007 MONITOR 2(42-MO-100(N,G)42-MO-101,,SIG) 3012800500008 at energy E0=0.025eV, taken from Cabell, 3012800500009 J.Nucl. Energy a12 172 1960 3012800500010 METHOD Relative intensities of the 191 keV gamma-ray of Mo-1013012800500011 and the 307 keV of Te-101 were measured relative to the3012800500012 416 keV of In-116 3012800500013 SAMPLE 0.675 millig/cm2 of Mo and 0.012 microg/cm2 of in 3012800500014 CORRECTION Self-shielding and cadmium shielding neglected. 3012800500015 Applied - 10% spectrum correction 3012800500016 COMMENT Measured S0 value was 21.7+-0.8 3012800500017 STATUS (TABLE) Table IV of 70HELSINKI,2,589,1970 3012800500018 ENDBIB 16 0 3012800500019 NOCOMMON 0 0 3012800500020 DATA 6 1 3012800500021 DATA 1DATA-ERR 1DATA 2DATA-ERR 2MONIT 2MONIT-ERR 23012800500022 NO-DIM NO-DIM B B B B 3012800500023 19.24 0.71 3.82 0.15 0.199 0.003 3012800500024 ENDDATA 3 0 3012800500025 ENDSUBENT 24 0 3012800599999 SUBENT 30128006 20161207 31763012800600001 BIB 7 16 3012800600002 REACTION 1((44-RU-102(N,G)44-RU-103,,RI,,RNV)// 3012800600003 (44-RU-102(N,G)44-RU-103,,SIG)) 3012800600004 2(44-RU-102(N,G)44-RU-103,,RI,,RNV) 3012800600005 reduced resonance integral and ratio to thermal capture3012800600006 cross section 3012800600007 MONITOR 2(44-RU-102(N,G)44-RU-103,,SIG) 3012800600008 at energy E0=0.025 eV 3012800600009 METHOD The 500 keV gamma ray of Ru-103 (140 days) was measured3012800600010 relative to the 265,280 and 405 keV gamma ray of Se-75 3012800600011 three months after irradiation 3012800600012 SAMPLE 1.8 millig/cm2 of Ru and 0.97 millig/cm2 of Se. 3012800600013 CORRECTION Self-shielding and cadmium shielding neglected 3012800600014 applied - 9% spectrum correction 3012800600015 COMMENT Measured S0 value was S0=3.76+-0.03. Good agreement 3012800600016 with calculated and previous experimental value 3012800600017 STATUS 2(TABLE) Table IV of Can.J.Phys.47(1969)2031 3012800600018 ENDBIB 16 0 3012800600019 NOCOMMON 0 0 3012800600020 DATA 6 1 3012800600021 DATA 1DATA-ERR 1DATA 2DATA-ERR 2MONIT 2MONIT-ERR 23012800600022 NO-DIM NO-DIM B B B B 3012800600023 3.33 0.03 4.80 0.52 1.44 0.16 3012800600024 ENDDATA 3 0 3012800600025 ENDSUBENT 24 0 3012800699999 SUBENT 30128007 20161207 31763012800700001 BIB 6 18 3012800700002 REACTION 1((49-IN-113(N,G)49-IN-114,,RI,,RNV)// 3012800700003 (49-IN-113(N,G)49-IN-114,,SIG)) 3012800700004 2(49-IN-113(N,G)49-IN-114,,RI,,RNV) 3012800700005 reduced resonance integral and ratio to thermal capture3012800700006 cross section 3012800700007 MONITOR 2(49-IN-113(N,G)49-IN-114,,SIG) 3012800700008 at energy E0=0.025 eV taken from 3012800700009 Goldberg et al (BNL-325,2Nd ed. Suppl.2, 1966) 3012800700010 METHOD About a month after irradiation the 190keV gamma ray of3012800700011 in-114 (50 days) was measured relative to the 265,280 3012800700012 and 405 keV gamma ray of Se-75 3012800700013 CORRECTION Experimental result corrected for self-shielding,0.984,3012800700014 difference of epithermal neutron activation and that of3012800700015 a 1/v detector below cadmium cutoff,0.069. Applied also3012800700016 - 1.8% spectrum correction 3012800700017 COMMENT Measured S0 value was S0 = 24.7+-0.5 Good agreement 3012800700018 with calculated value 3012800700019 STATUS 2(TABLE) Table IV of Can.J.Phys.47(1969)2031 3012800700020 ENDBIB 18 0 3012800700021 NOCOMMON 0 0 3012800700022 DATA 6 1 3012800700023 DATA 1DATA-ERR 1DATA 2MONIT 2MONIT-ERR 2DATA-ERR 23012800700024 NO-DIM NO-DIM B B B B 3012800700025 21.9 0.4 11.1 1.3 243.1 29.0 3012800700026 ENDDATA 3 0 3012800700027 ENDSUBENT 26 0 3012800799999 SUBENT 30128008 20161207 31763012800800001 BIB 7 17 3012800800002 REACTION 1((51-SB-123(N,G)51-SB-124,,RI,,RNV)// 3012800800003 (51-SB-123(N,G)51-SB-124,,SIG)) 3012800800004 2(51-SB-123(N,G)51-SB-124,,RI,,RNV) 3012800800005 reduced resonance integral and ratio to thermal capture3012800800006 cross section 3012800800007 MONITOR 2(51-SB-123(N,G)51-SB-124,,SIG) 3012800800008 at energy E0=0.025 eV. Average value 3012800800009 of experimental values of Courtemanche et al (CJP 44 3012800800010 2956 1966)and Sims et al(J.Inorg.Nucl.Chem 30 349 1968)3012800800011 METHOD Four months after irradiation the 600 keV gamma ray of 3012800800012 Sb-124 (60 d) was measured relative to the 1114 keV 3012800800013 gamma ray of Zn-65. 3012800800014 SAMPLE 0.029 millig/cm2 of Sb and 8.58 millig/cm2 of Zn. 3012800800015 CORRECTION Neglected self-shielding and cadmium shielding 3012800800016 applied - 3.5% spectral correction. 3012800800017 COMMENT Measured S0 value was S0 = 28.3+-2.1 3012800800018 STATUS 2(TABLE) Table IV of Can.J.Phys.47(1969)2031 3012800800019 ENDBIB 17 0 3012800800020 NOCOMMON 0 0 3012800800021 DATA 6 1 3012800800022 DATA 1DATA-ERR 1MONIT 2DATA 2DATA-ERR 2MONIT-ERR 23012800800023 NO-DIM NO-DIM B B B B 3012800800024 25.1 1.9 4.50 112.9 8.7 0.14 3012800800025 ENDDATA 3 0 3012800800026 ENDSUBENT 25 0 3012800899999 SUBENT 30128009 20161207 31763012800900001 BIB 7 16 3012800900002 REACTION 1((72-HF-180(N,G)72-HF-181,,RI,,RNV)// 3012800900003 (72-HF-180(N,G)72-HF-181,,SIG)) 3012800900004 2(72-HF-180(N,G)72-HF-181,,RI,,RNV) 3012800900005 reduced resonance integral and ratio to thermal capture3012800900006 cross section 3012800900007 MONITOR 2(72-HF-180(N,G)72-HF-181,,SIG) 3012800900008 at energy E0=0.025 eV, taken from 3012800900009 Goldberg et al.(BNL-325,2nd ed.,Suppl.2. 1966) 3012800900010 METHOD About a month after irradiation the 482keV gamma ray of3012800900011 Hf-181 was measured relative to the 1114 keV gamma ray 3012800900012 of Zn-65. 3012800900013 SAMPLE 0.0069 millig/cm2 of Hf and 3.53 millig/cm2 of zinc. 3012800900014 CORRECTION Applied - 7% spectrum correction. No correction 3012800900015 for self-shielding and cadmium shielding. 3012800900016 COMMENT Measured S0 value was S0=2.17+-0.09 3012800900017 STATUS 2(TABLE) Table IV of Can.J.Phys.47(1969)2031 3012800900018 ENDBIB 16 0 3012800900019 NOCOMMON 0 0 3012800900020 DATA 6 1 3012800900021 DATA 1DATA-ERR 1DATA 2DATA-ERR 2MONIT 2MONIT-ERR 23012800900022 NO-DIM NO-DIM B B B B 3012800900023 1.92 0.08 24.3 1.6 12.6 0.7 3012800900024 ENDDATA 3 0 3012800900025 ENDSUBENT 24 0 3012800999999 ENDENTRY 9 0 3012899999999