ENTRY 10013 20170330 14261001300000001 SUBENT 10013001 20170330 14261001300100001 BIB 12 38 1001300100002 TITLE Measurements of alpha and of fission cross-section 1001300100003 ratios for 233U, 235U and 239Pu at thermal energies 1001300100004 AUTHOR (M.Lounsbury, R.W.Durham, G.C.Hanna) 1001300100005 INSTITUTE (1CANCRC) 1001300100006 REFERENCE (C,70HELSINKI,1,287,1970) 1001300100007 FACILITY (REAC,1CANCRC) NRU reactor with light water at a 1001300100008 controlled temperature 37.5+/-0.5 deg-C. 1001300100009 METHOD (BURN) Iterative burn-up calculation performed. 1001300100010 (MASSP) Consolidated electrodynamics mass spectrometer 1001300100011 ANALYSIS Input (prior) cross sections were adjusted to reproduce1001300100012 the results of the mass spectrometer measurements. 1001300100013 CORRECTION Corrections factors were calculated to convert the 1001300100014 measured cross sections to the 37.5 deg-C Maxwellian 1001300100015 spectrum averaged cross sections for 235U and 239Pu 1001300100016 absorption and fission cross sections. 1001300100017 ERR-ANALYS (ERR-T) Quadrature sum (i.e., ignoring partial 1001300100018 correlation among the data sets from this experiment) 1001300100019 of the following uncertainties excluding 1001300100020 uncertainties in g-factors: 1001300100021 (ERR-1) due to uncertainty in isotopic analysis 1001300100022 (ERR-2) due to uncertainty in input cross sections 1001300100023 (ERR-3) due to uncertainty in neutron spectrum 1001300100024 COMMENT By M.Beer et al. (1976): 1001300100025 Monte Carlo calculation was performed with ENDF/B-IV 1001300100026 to obtain spectral effects on alpha-values 1001300100027 considering geometric complexities and sample 1001300100028 inhomogeneities, and obtained correction factors 1001300100029 which are the ratios of the ENDF/B-IV 2200 m/s values 1001300100030 to those obtained by the calculation. 1001300100031 STATUS (TABLE) Table IV of 70HELSINKI, Vol.1, p287 (1970) 1001300100032 (APRVD) Approved by author. 1001300100033 HISTORY (19720417C) 1001300100034 (19731231U) BIB corrections 1001300100035 (19800813A) Converted to REACTION formalism 1001300100036 (19860529A) Miscellaneous updates. 1001300100037 (20120331U) SD. Page of ref. corrected (287(2) => 287).1001300100038 (20170330A) On. ERR-ANALYS revised. Major revisions in 1001300100039 002-010. 1001300100040 ENDBIB 38 0 1001300100041 NOCOMMON 0 0 1001300100042 ENDSUBENT 41 0 1001300199999 SUBENT 10013002 20170330 14261001300200001 BIB 5 10 1001300200002 REACTION (92-U-233(N,ABS),,ALF) 1001300200003 ERR-ANALYS Additional uncertainty (g-factor): +/-0.0017 1001300200004 CRITIQUE M.Beer et al. (1976): 1001300200005 The value corrected with Monte Carlo calculation gives1001300200006 alpha0(233U)=0.0861+/-0.0021 1001300200007 where the uncertainty is from calculation (0.0005), 1001300200008 g-factor (0.0017) and mass spectroscopy (0.0012). 1001300200009 REL-REF (C,,M.Beer+,J,ANS,23,509,1976) 1001300200010 Correction to original values with Monte Carlo method 1001300200011 HISTORY (20170330A) On. DATA-ERR->ERR-T. ERR-1 to ERR-3 added. 1001300200012 ENDBIB 10 0 1001300200013 NOCOMMON 0 0 1001300200014 DATA 6 1 1001300200015 EN DATA ERR-T ERR-1 ERR-2 ERR-3 1001300200016 EV NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 1001300200017 0.0253 0.0899 0.0004 0.0004 0.00001 0.00002 1001300200018 ENDDATA 3 0 1001300200019 ENDSUBENT 18 0 1001300299999 SUBENT 10013003 20170330 14261001300300001 BIB 5 10 1001300300002 REACTION (92-U-235(N,ABS),,ALF) 1001300300003 ERR-ANALYS Additional uncertainty (g-factor): +/-0.0020 1001300300004 CRITIQUE M.Beer et al. (1976): 1001300300005 The value corrected with Monte Carlo calculation gives1001300300006 alpha0(235U)=0.1697+/-0.0029 1001300300007 where the uncertainty is from calculation (0.00028), 1001300300008 g-factor (0.0020) and mass spectroscopy (0.0021). 1001300300009 REL-REF (C,,M.Beer+,J,ANS,23,509,1976) 1001300300010 Correction to original values with Monte Carlo method 1001300300011 HISTORY (20170330A) On. DATA-ERR->ERR-T. ERR-1 to ERR-3 added. 1001300300012 ENDBIB 10 0 1001300300013 NOCOMMON 0 0 1001300300014 DATA 6 1 1001300300015 EN DATA ERR-T ERR-1 ERR-2 ERR-3 1001300300016 EV NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 1001300300017 0.0253 0.1702 0.0007 0.0007 0.00002 0.00002 1001300300018 ENDDATA 3 0 1001300300019 ENDSUBENT 18 0 1001300399999 SUBENT 10013004 20170330 14261001300400001 BIB 5 10 1001300400002 REACTION (94-PU-239(N,ABS),,ALF) 1001300400003 ERR-ANALYS Additional uncertainty (g-factor): +/-0.0045 1001300400004 CRITIQUE M.Beer et al. (1976): 1001300400005 The value corrected with Monte Carlo calculation gives1001300400006 alpha0(239Pu)=0.3558+/-0.0057 1001300400007 where the uncertainty is from calculation (0.0023), 1001300400008 g-factor (0.0045) and mass spectroscopy (0.0027). 1001300400009 REL-REF (C,,M.Beer+,J,ANS,23,509,1976) 1001300400010 Correction to original values with Monte Carlo method 1001300400011 HISTORY (20170330A) On. DATA-ERR->ERR-T. ERR-1 to ERR-3 added. 1001300400012 ENDBIB 10 0 1001300400013 NOCOMMON 0 0 1001300400014 DATA 6 1 1001300400015 EN DATA ERR-T ERR-1 ERR-2 ERR-3 1001300400016 EV NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 1001300400017 0.0253 0.3597 0.0021 0.0009 0.0011 0.0015 1001300400018 ENDDATA 3 0 1001300400019 ENDSUBENT 18 0 1001300499999 SUBENT 10013005 20170330 14261001300500001 BIB 3 4 1001300500002 REACTION ((94-PU-239(N,F),,SIG)/(92-U-233(N,F),,SIG)) 1001300500003 ERR-ANALYS Additional uncertainty (g-factor): +/-0.0049 1001300500004 HISTORY (19731231A) Data headings corrected 1001300500005 (20170330A) On. DATA-ERR->ERR-T. ERR-1 to ERR-3 added. 1001300500006 ENDBIB 4 0 1001300500007 NOCOMMON 0 0 1001300500008 DATA 6 1 1001300500009 EN DATA ERR-T ERR-1 ERR-2 ERR-3 1001300500010 EV NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 1001300500011 0.0253 1.4046 0.0079 0.0060 0.0030 0.0041 1001300500012 ENDDATA 3 0 1001300500013 ENDSUBENT 12 0 1001300599999 SUBENT 10013006 20170330 14261001300600001 BIB 3 3 1001300600002 REACTION ((94-PU-239(N,F),,SIG)/(92-U-235(N,F),,SIG)) 1001300600003 ERR-ANALYS Additional uncertainty (g-factor): +/-0.0042 1001300600004 HISTORY (20170330A) On. DATA-ERR->ERR-T. ERR-1 to ERR-3 added. 1001300600005 ENDBIB 3 0 1001300600006 NOCOMMON 0 0 1001300600007 DATA 6 1 1001300600008 EN DATA ERR-T ERR-1 ERR-2 ERR-3 1001300600009 EV NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 1001300600010 0.0253 1.2926 0.0081 0.0054 0.0027 0.0053 1001300600011 ENDDATA 3 0 1001300600012 ENDSUBENT 11 0 1001300699999 SUBENT 10013007 20170330 14261001300700001 BIB 3 3 1001300700002 REACTION ((92-U-233(N,F),,SIG)/(92-U-235(N,F),,SIG)) 1001300700003 ERR-ANALYS Additional uncertainty (g-factor): +/-0.0023 1001300700004 HISTORY (20170330A) On. DATA-ERR->ERR-T. ERR-1 to ERR-3 added. 1001300700005 ENDBIB 3 0 1001300700006 NOCOMMON 0 0 1001300700007 DATA 6 1 1001300700008 EN DATA ERR-T ERR-1 ERR-2 ERR-3 1001300700009 EV NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 1001300700010 0.0253 0.9203 0.0057 0.0055 0.0004 0.0014 1001300700011 ENDDATA 3 0 1001300700012 ENDSUBENT 11 0 1001300799999 SUBENT 10013008 20170330 14261001300800001 BIB 3 3 1001300800002 REACTION (94-PU-240(N,G)94-PU-241,,SIG) 1001300800003 ERR-ANALYS Additional uncertainty (g-factor) assumed negligible. 1001300800004 HISTORY (20170330A) On. DATA-ERR->ERR-T. ERR-1 to ERR-3 added. 1001300800005 ENDBIB 3 0 1001300800006 NOCOMMON 0 0 1001300800007 DATA 6 1 1001300800008 EN DATA ERR-T ERR-1 ERR-2 ERR-3 1001300800009 EV B B B B B 1001300800010 0.0253 289.5 1.4 0.5 1.2 0.5 1001300800011 ENDDATA 3 0 1001300800012 ENDSUBENT 11 0 1001300899999 SUBENT 10013010 20170330 14261001301000001 BIB 2 4 1001301000002 REACTION (92-U-234(N,G)92-U-235,,SIG,,MXW) 1001301000003 HISTORY (19731231A) ISO-QUANT corrected 1001301000004 (20170330A) On. DATA-ERR->ERR-T. ERR-1 to ERR-3 added. 1001301000005 EN-DUMMY=0.0253 eV -> KT-K=37.5 deg-C 1001301000006 ENDBIB 4 0 1001301000007 NOCOMMON 0 0 1001301000008 DATA 6 1 1001301000009 KT-K DATA ERR-T ERR-1 ERR-2 ERR-3 1001301000010 DEG-C B B B B B 1001301000011 37.5 95.6 2.1 2.0 0.4 0.1 1001301000012 ENDDATA 3 0 1001301000013 ENDSUBENT 12 0 1001301099999 ENDENTRY 9 0 1001399999999