ENTRY 10125 20180521 14411012500000001 SUBENT 10125001 20180521 14411012500100001 BIB 16 54 1012500100002 TITLE Measurement of prompt neutron fission yield (nu bar) 1012500100003 in thermal neutron fission of 232U, 238Pu, 241Pu, 1012500100004 241Am, 242mAm, 243Cm, 245Cm and in spontaneous 1012500100005 fission of 244Cm 1012500100006 AUTHOR (A.H.Jaffey,J.L.Lerner) 1012500100007 REFERENCE (J,NP/A,145,1,197004) 1012500100008 #doi:10.1016/0375-9474(70)90307-6 1012500100009 (R,ANL-7625,196911) 1012500100010 INSTITUTE (1USAANL) 1012500100011 FACILITY (REAC,1USAANL) Argonne CP-5 reactor 1012500100012 INC-SOURCE (REAC) Collimated thermal beam 1012500100013 3.0*(10**7) neutrons/cm**2*sec 1012500100014 INC-SPECT Cadmium ratio 100 to 150 measured with 0.001 in. Au 1012500100015 foil and 0.020 in. Cd box. 1012500100016 SAMPLE Electroplated onto Pt plates. Acid solution and 1012500100017 spreading agent used for cases where quantity was 1012500100018 small (1 microg or less). 1012500100019 METHOD (COINC) Coincidence method yielded ratios of prompt 1012500100020 neutron fission yields of the standards with fission 1012500100021 fragments and fission neutrons 1012500100022 DETECTOR (HORBU) Four Hornyak buttons 1012500100023 (IOCH) fission fragments detected in coincidence with 1012500100024 neutrons in ionization chambers sample in ion chamber 1012500100025 in direct line of beam. Hornyak buttons symmetrically 1012500100026 placed around chamber with axes perpendicular to beam. 1012500100027 ANALYSIS 5Average of values relative to all standards 1012500100028 MONITOR 5(94-PU-239(N,F),PR,NU,,MXW) 1012500100029 94-Pu-239 prompt fission yield assumed 2.884+/-0.007 1012500100030 (92-U-235(N,F),PR,NU,,MXW) 1012500100031 92-U-235 prompt fission yield assumed 2.407+/-0.005 1012500100032 (92-U-233(N,F),PR,NU,,MXW) 1012500100033 92-U-233 prompt fission yield assumed 2.478+/-0.007 1012500100034 (98-CF-252(0,F),PR,NU) 1012500100035 98-Cf-252 prompt fission yield assumed 3.764+/-0.015 1012500100036 average values for the samples obtained using above 1012500100037 standards. Results also reported as ratios to the 1012500100038 standard values. 1012500100039 CORRECTION Corrections for accidentals, neutron-detector drift, 1012500100040 other fashioning isotopes, spontaneously fashioning 1012500100041 isotopes, correlation between fission-fragment and 1012500100042 fission neutrons applied. 1012500100043 ERR-ANALYS (ERR-S) The quoted error includes only statistical 1012500100044 error. 1012500100045 STATUS (APRVD) Approved by author. 1012500100046 HISTORY (19720424C) 1012500100047 (19730509A) BIB corrections 1012500100048 (19801210A) BIB, data corrections. Added ratios 1012500100049 Converted to reaction formalism. 1012500100050 (19931222A) energy moved to subentries, BIB update, 1012500100051 converted to lower case. 1012500100052 (20000321A) Converted to new date format. 1012500100053 (20180521U) BP: minor corrections and updates: doi, 1012500100054 status, units, errors, samples, restored 1012500100055 upper case BIB. 1012500100056 ENDBIB 54 0 1012500100057 NOCOMMON 0 0 1012500100058 ENDSUBENT 57 0 1012500199999 SUBENT 10125002 20180521 14411012500200001 BIB 3 20 1012500200002 REACTION 1((94-PU-241(N,F),PR,NU,,MXW)/ 1012500200003 (94-PU-239(N,F),PR,NU,,MXW)) 1012500200004 2((94-PU-241(N,F),PR,NU,,MXW)/ 1012500200005 (92-U-235(N,F),PR,NU,,MXW)) 1012500200006 3((94-PU-241(N,F),PR,NU,,MXW)/ 1012500200007 (92-U-233(N,F),PR,NU,,MXW)) 1012500200008 5(94-PU-241(N,F),PR,NU,,MXW) 1012500200009 SAMPLE Two samples were used, Sample I: 1012500200010 (94-PU-239,ENR=0.0533) 1012500200011 (94-PU-240,ENR=0.39) 1012500200012 (94-PU-241,ENR=0.198) 1012500200013 (94-PU-242,ENR=0.341) 1012500200014 (94-PU-244,ENR=0.000018) 1012500200015 Sample II: 1012500200016 (94-PU-238,ENR=0.000166) 1012500200017 (94-PU-239,ENR=0.262) 1012500200018 (94-PU-240,ENR=0.137) 1012500200019 (94-PU-241,ENR=0.594) 1012500200020 (94-PU-242,ENR=0.00671) 1012500200021 STATUS (TABLE) Table 4, page 15. 1012500200022 ENDBIB 20 0 1012500200023 COMMON 1 3 1012500200024 EN-DUMMY 1012500200025 EV 1012500200026 0.0253 1012500200027 ENDCOMMON 3 0 1012500200028 DATA 8 1 1012500200029 DATA 1ERR-S 1DATA 2ERR-S 2DATA 3ERR-S 31012500200030 DATA 5ERR-S 5 1012500200031 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 1012500200032 PRT/FIS PRT/FIS 1012500200033 1.000 0.004 1.195 0.006 1.144 0.0081012500200034 2.874 0.015 1012500200035 ENDDATA 6 0 1012500200036 ENDSUBENT 35 0 1012500299999 SUBENT 10125003 20180521 14411012500300001 BIB 3 14 1012500300002 REACTION 1((94-PU-238(N,F),PR,NU,,MXW)/ 1012500300003 (94-PU-239(N,F),PR,NU,,MXW)) 1012500300004 2((94-PU-238(N,F),PR,NU,,MXW)/ 1012500300005 (92-U-235(N,F),PR,NU,,MXW)) 1012500300006 3((94-PU-238(N,F),PR,NU,,MXW)/ 1012500300007 (92-U-233(N,F),PR,NU,,MXW)) 1012500300008 4((94-PU-238(N,F),PR,NU,,MXW)/(98-CF-252(0,F),PR,NU)) 1012500300009 5(94-PU-238(N,F),PR,NU,,MXW) 1012500300010 SAMPLE (94-PU-238,ENR=0.99663) 1012500300011 (94-PU-239,ENR=0.00310) 1012500300012 (94-PU-240,ENR=0.00012), 94-PU-241 is less than 1012500300013 0.0013%. 1012500300014 (94-PU-242,ENR=0.00014) 1012500300015 STATUS (TABLE) Table 7, page 17. 1012500300016 ENDBIB 14 0 1012500300017 COMMON 1 3 1012500300018 EN-DUMMY 1012500300019 EV 1012500300020 0.0253 1012500300021 ENDCOMMON 3 0 1012500300022 DATA 10 1 1012500300023 DATA 1ERR-S 1DATA 2ERR-S 2DATA 3ERR-S 31012500300024 DATA 4ERR-S 4DATA 5ERR-S 5 1012500300025 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 1012500300026 NO-DIM NO-DIM PRT/FIS PRT/FIS 1012500300027 1.008 0.011 1.204 0.012 1.165 0.0121012500300028 0.765 0.008 2.895 0.027 1012500300029 ENDDATA 6 0 1012500300030 ENDSUBENT 29 0 1012500399999 SUBENT 10125004 20180521 14411012500400001 BIB 3 12 1012500400002 REACTION 1((95-AM-241(N,F),PR,NU,,MXW)/ 1012500400003 (94-PU-239(N,F),PR,NU,,MXW)) 1012500400004 2((95-AM-241(N,F),PR,NU,,MXW)/ 1012500400005 (92-U-235(N,F),PR,NU,,MXW)) 1012500400006 3((95-AM-241(N,F),PR,NU,,MXW)/ 1012500400007 (92-U-233(N,F),PR,NU,,MXW)) 1012500400008 4((95-AM-241(N,F),PR,NU,,MXW)/ 1012500400009 (98-CF-252(0,F),PR,NU)) 1012500400010 5(95-AM-241(N,F),PR,NU,,MXW) 1012500400011 SAMPLE (95-AM-241,ENR=1.0), 95-AM-242 is less than 0.003%, 1012500400012 95-AM-243 is less than 0.001%. 1012500400013 STATUS (TABLE) Table 9, pages 17-18. 1012500400014 ENDBIB 12 0 1012500400015 COMMON 1 3 1012500400016 EN-DUMMY 1012500400017 EV 1012500400018 0.0253 1012500400019 ENDCOMMON 3 0 1012500400020 DATA 10 1 1012500400021 DATA 1ERR-S 1DATA 2ERR-S 2DATA 3ERR-S 31012500400022 DATA 4ERR-S 4DATA 5ERR-S 5 1012500400023 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 1012500400024 NO-DIM NO-DIM PRT/FIS PRT/FIS 1012500400025 1.112 0.013 1.332 0.017 1.310 0.0171012500400026 0.854 0.013 3.219 0.038 1012500400027 ENDDATA 6 0 1012500400028 ENDSUBENT 27 0 1012500499999 SUBENT 10125005 20180521 14411012500500001 BIB 5 15 1012500500002 REACTION 1((95-AM-242-M(N,F),PR,NU,,MXW)/ 1012500500003 (94-PU-239(N,F),PR,NU,,MXW)) 1012500500004 2((95-AM-242-M(N,F),PR,NU,,MXW)/ 1012500500005 (92-U-235(N,F),PR,NU,,MXW)) 1012500500006 3((95-AM-242-M(N,F),PR,NU,,MXW)/ 1012500500007 (92-U-233(N,F),PR,NU,,MXW)) 1012500500008 4((95-AM-242-M(N,F),PR,NU,,MXW)/ 1012500500009 (98-CF-252(0,F),PR,NU)) 1012500500010 5(95-AM-242-M(N,F),PR,NU,,MXW) 1012500500011 SAMPLE (95-AM-241,ENR=0.9754) 1012500500012 (95-AM-242,ENR=0.0132) 1012500500013 (95-AM-243,ENR=0.0114) 1012500500014 DECAY-DATA (95-AM-242-M,152.YR) 1012500500015 STATUS (TABLE) Table 9, pages 17-18. 1012500500016 HISTORY (19730509A) Iso-quant corrected. 1012500500017 ENDBIB 15 0 1012500500018 COMMON 1 3 1012500500019 EN-DUMMY 1012500500020 EV 1012500500021 0.0253 1012500500022 ENDCOMMON 3 0 1012500500023 DATA 10 1 1012500500024 DATA 1ERR-S 1DATA 2ERR-S 2DATA 3ERR-S 31012500500025 DATA 4ERR-S 4DATA 5ERR-S 5 1012500500026 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 1012500500027 NO-DIM NO-DIM PRT/FIS PRT/FIS 1012500500028 1.127 0.008 1.351 0.012 1.329 0.0111012500500029 0.866 0.010 3.264 0.024 1012500500030 ENDDATA 6 0 1012500500031 ENDSUBENT 30 0 1012500599999 SUBENT 10125006 20180521 14411012500600001 BIB 5 34 1012500600002 REACTION 1((96-CM-244(0,F),PR,NU)//(94-PU-239(N,F),PR,NU,,MXW)) 1012500600003 2((96-CM-244(0,F),PR,NU)//(92-U-235(N,F),PR,NU,,MXW)) 1012500600004 3((96-CM-244(0,F),PR,NU)//(92-U-233(N,F),PR,NU,,MXW)) 1012500600005 4((96-CM-244(0,F),PR,NU)/(98-CF-252(0,F),PR,NU)) 1012500600006 5(96-CM-244(0,F),PR,NU) 1012500600007 SAMPLE Two samples were used for 243Cm. 1012500600008 Sample I: 1012500600009 (96-CM-242,ENR=0.0081) 1012500600010 (96-CM-243,ENR=0.402) 1012500600011 (96-CM-244,ENR=0.584) 1012500600012 (956-CM-245,ENR=0.0066) 1012500600013 (96-CM-246,ENR=0.000052) 1012500600014 Sample II: 1012500600015 (96-CM-242,ENR=0.00161) 1012500600016 (96-CM-243,ENR=0.409) 1012500600017 (96-CM-244,ENR=0.583) 1012500600018 (956-CM-245,ENR=0.0069) 1012500600019 (96-CM-246,ENR=0.000054) 1012500600020 One sample for 245Cm. 1012500600021 (96-CM-242,ENR=0.0076) 1012500600022 (96-CM-243,ENR=0.00053) 1012500600023 (96-CM-244,ENR=0.96) 1012500600024 (96-CM-245,ENR=0.0104) 1012500600025 (96-CM-246,ENR=0.0210) 1012500600026 (96-CM-247,ENR=0.00024) 1012500600027 (96-CM-248,ENR=0.00008) 1012500600028 METHOD The nuclide 244Cm was present in the samples used 1012500600029 for measuring nu bar (243Cm) and nu bar(245Cm). To 1012500600030 correct for 244Cm spontaneous fission, these samples 1012500600031 were measured with beam shutter closed. 1012500600032 STATUS (TABLE) Table 11, pages 19, 21. 1012500600033 HISTORY (19730509A) Iso-quant changed to nuc-quant, 1012500600034 energy deleted 1012500600035 (20000321A) reaction separator corrected. 1012500600036 ENDBIB 34 0 1012500600037 COMMON 3 3 1012500600038 EN-DUM-DN 1EN-DUM-DN 2EN-DUM-DN 3 1012500600039 EV EV EV 1012500600040 0.0253 0.0253 0.0253 1012500600041 ENDCOMMON 3 0 1012500600042 DATA 10 1 1012500600043 DATA 1ERR-S 1DATA 2ERR-S 2DATA 3ERR-S 31012500600044 DATA 4ERR-S 4DATA 5ERR-S 5 1012500600045 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 1012500600046 NO-DIM NO-DIM PRT/FIS PRT/FIS 1012500600047 0.937 0.008 1.120 0.010 1.086 0.0071012500600048 0.720 0.020 2.692 0.024 1012500600049 ENDDATA 6 0 1012500600050 ENDSUBENT 49 0 1012500699999 SUBENT 10125007 20180521 14411012500700001 BIB 3 21 1012500700002 REACTION 1((96-CM-243(N,F),PR,NU,,MXW)/ 1012500700003 (94-PU-239(N,F),PR,NU,,MXW)) 1012500700004 2((96-CM-243(N,F),PR,NU,,MXW)/ 1012500700005 (92-U-235(N,F),PR,NU,,MXW)) 1012500700006 3((96-CM-243(N,F),PR,NU,,MXW)/ 1012500700007 (92-U-233(N,F),PR,NU,,MXW)) 1012500700008 4((96-CM-243(N,F),PR,NU,,MXW)/ 1012500700009 (98-CF-252(0,F),PR,NU)) 1012500700010 5(96-CM-243(N,F),PR,NU,,MXW) 1012500700011 SAMPLE Two samples were used, Sample I: 1012500700012 (96-CM-242,ENR=0.0081) 1012500700013 (96-CM-243,ENR=0.402) 1012500700014 (96-CM-244,ENR=0.584) 1012500700015 (956-CM-245,ENR=0.0066) 1012500700016 (96-CM-246,ENR=0.000052) Sample II: 1012500700017 (96-CM-242,ENR=0.00161) 1012500700018 (96-CM-243,ENR=0.409) 1012500700019 (96-CM-244,ENR=0.583) 1012500700020 (956-CM-245,ENR=0.0069) 1012500700021 (96-CM-246,ENR=0.000054) 1012500700022 STATUS (TABLE) Table 15, page 22. 1012500700023 ENDBIB 21 0 1012500700024 COMMON 1 3 1012500700025 EN-DUMMY 1012500700026 EV 1012500700027 0.0253 1012500700028 ENDCOMMON 3 0 1012500700029 DATA 10 1 1012500700030 DATA 1ERR-S 1DATA 2ERR-S 2DATA 3ERR-S 31012500700031 DATA 4ERR-S 4DATA 5ERR-S 5 1012500700032 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 1012500700033 NO-DIM NO-DIM PRT/FIS PRT/FIS 1012500700034 1.189 0.018 1.419 0.021 1.377 0.0201012500700035 0.921 0.014 3.430 0.047 1012500700036 ENDDATA 6 0 1012500700037 ENDSUBENT 36 0 1012500799999 SUBENT 10125008 20180521 14411012500800001 BIB 3 15 1012500800002 REACTION 1((96-CM-245(N,F),PR,NU,,MXW)/ 1012500800003 (94-PU-239(N,F),PR,NU,,MXW)) 1012500800004 2((96-CM-245(N,F),PR,NU,,MXW)/ 1012500800005 (92-U-235(N,F),PR,NU,,MXW)) 1012500800006 3((96-CM-245(N,F),PR,NU,,MXW)/ 1012500800007 (92-U-233(N,F),PR,NU,,MXW)) 1012500800008 5(96-CM-245(N,F),PR,NU,,MXW) 1012500800009 SAMPLE (96-CM-242,ENR=0.0076) 1012500800010 (96-CM-243,ENR=0.00053) 1012500800011 (96-CM-244,ENR=0.96) 1012500800012 (96-CM-245,ENR=0.0104) 1012500800013 (96-CM-246,ENR=0.0210) 1012500800014 (96-CM-247,ENR=0.00024) 1012500800015 (96-CM-248,ENR=0.00008) 1012500800016 STATUS (TABLE) Table 17, pages 23 and 22. 1012500800017 ENDBIB 15 0 1012500800018 COMMON 1 3 1012500800019 EN-DUMMY 1012500800020 EV 1012500800021 0.0253 1012500800022 ENDCOMMON 3 0 1012500800023 DATA 8 1 1012500800024 DATA 1ERR-S 1DATA 2ERR-S 2DATA 3ERR-S 31012500800025 DATA 5ERR-S 5 1012500800026 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 1012500800027 PRT/FIS PRT/FIS 1012500800028 1.328 0.013 1.591 0.016 1.553 0.0161012500800029 3.832 0.034 1012500800030 ENDDATA 6 0 1012500800031 ENDSUBENT 30 0 1012500899999 SUBENT 10125009 20180521 14411012500900001 BIB 3 10 1012500900002 REACTION 1((92-U-232(N,F),PR,NU,,MXW)/ 1012500900003 (92-U-235(N,F),PR,NU,,MXW)) 1012500900004 2((92-U-232(N,F),PR,NU,,MXW)/ 1012500900005 (92-U-233(N,F),PR,NU,,MXW)) 1012500900006 5(92-U-232(N,F),PR,NU,,MXW) 1012500900007 SAMPLE (92-U-232,ENR=0.99213) 1012500900008 (92-U-233,ENR=0.00195) 1012500900009 (92-U-235,ENR=0.00078) 1012500900010 (92-U-238,ENR=0.00514) 1012500900011 STATUS (TABLE) Table 19, page 23. 1012500900012 ENDBIB 10 0 1012500900013 COMMON 1 3 1012500900014 EN-DUMMY 1012500900015 EV 1012500900016 0.0253 1012500900017 ENDCOMMON 3 0 1012500900018 DATA 6 1 1012500900019 DATA 1ERR-S 1DATA 2ERR-S 2DATA 5ERR-S 51012500900020 NO-DIM NO-DIM NO-DIM NO-DIM PRT/FIS PRT/FIS 1012500900021 1.308 0.026 1.260 0.026 3.130 0.0601012500900022 ENDDATA 3 0 1012500900023 ENDSUBENT 22 0 1012500999999 ENDENTRY 9 0 1012599999999