ENTRY 10809 20101103 13691080900000001 SUBENT 10809001 20101103 13691080900100001 BIB 11 23 1080900100002 INSTITUTE (1USANBS) 1080900100003 REFERENCE ((R,ANL-76-90,333,197606)=(C,76ANL,,333,197606)) 1080900100004 (J,ANS,44,533,198306) Revised values. 1080900100005 (C,75WASH,1,266,197503) 1080900100006 (C,77NBS,,156,197703) Revised data 1080900100007 AUTHOR (H.T.Heaton II,D.M.Gilliam,V.Spiegel Jr,C.Eisenhauser, 1080900100008 J.A.Grundl) 1080900100009 TITLE Fission cross sections of 235U, 238U and 239Pu 1080900100010 averaged over the 252Cf neutron spectrum. 1080900100011 INC-SOURCE (CF252). 4.E+09 neutrons/sec. Encapsulated 1080900100012 in 2 g of steel and aluminum 1080900100013 METHOD (MANGB) 1080900100014 DETECTOR (FISCH) Two double fission chambers. 1080900100015 PART-DET (FF) 1080900100016 MONITOR 252Cf source calibrated in manganese sulfate bath 1080900100017 facility against Ra-Be photoneutron standard source, 1080900100018 NBS-I. 252Cf half-life taken as 2.637 yr. 1080900100019 STATUS (TABLE) Data taken from Trans.Am.Nucl.Soc., 44, 533 1080900100020 (1983). 1080900100021 (APRVD) Approved by D.M.Gilliam, 1979/7/23. 1080900100022 HISTORY (19781211C) 1080900100023 (19830823A) Data revisions. 1080900100024 (20101103A) VM:Updated to new date formats,lower case. 1080900100025 ENDBIB 23 0 1080900100026 NOCOMMON 0 0 1080900100027 ENDSUBENT 26 0 1080900199999 SUBENT 10809002 20101103 13691080900200001 BIB 3 5 1080900200002 REACTION (92-U-235(N,F),,SIG,,FIS) 1080900200003 CORRECTION Corrected for fission in other isotopes, geometrical 1080900200004 factors, undetected fission fragments, neutron 1080900200005 scattering. 1080900200006 ERR-ANALYS (DATA-ERR) Data error given is total RMS uncertainty. 1080900200007 ENDBIB 5 0 1080900200008 NOCOMMON 0 0 1080900200009 DATA 3 1 1080900200010 EN-DUMMY DATA DATA-ERR 1080900200011 MEV MB MB 1080900200012 2.13 1216. 19. 1080900200013 ENDDATA 3 0 1080900200014 ENDSUBENT 13 0 1080900299999 SUBENT 10809003 20101103 13691080900300001 BIB 6 14 1080900300002 REACTION 1((92-U-235(N,F),,SIG,,FIS)/(92-U-238(N,F),,SIG,,FIS)) 1080900300003 2(92-U-238(N,F),,SIG,,FIS) 1080900300004 MONITOR 2(92-U-235(N,F),,SIG,,FIS) 1080900300005 MONIT-REF 2(10809002,H.T.HEATON+,C,75WASH,1,266,197503) 1080900300006 CORRECTION Corrected for fragment absorption, counts below 1080900300007 discriminator, isotopic impurities, dead time, 1080900300008 electronic background, contamination, inelastic 1080900300009 scattering perturbations. 1080900300010 ERR-ANALYS1(DATA-ERR) Errors given are standard deviations 1080900300011 2(DATA-ERR) Errors given include uncertainty in 1080900300012 . neutron source strength - 1.2%. 1080900300013 . elastic scattering correction - 1.3%, 1080900300014 . geometrical errors - 0.6%. 1080900300015 HISTORY (19781211C) 1080900300016 ENDBIB 14 0 1080900300017 COMMON 3 3 1080900300018 EN-DUMMY MONIT 1MONIT-ERR 2 1080900300019 MEV B B 1080900300020 2.13 1.216 0.019 1080900300021 ENDCOMMON 3 0 1080900300022 DATA 4 1 1080900300023 DATA 1DATA-ERR 1DATA 2DATA-ERR 2 1080900300024 NO-DIM PER-CENT MB MB 1080900300025 3.73 1.2 326. 6.5 1080900300026 ENDDATA 3 0 1080900300027 ENDSUBENT 26 0 1080900399999 SUBENT 10809004 20101103 13691080900400001 BIB 6 14 1080900400002 REACTION 1((92-U-235(N,F),,SIG,,FIS)/(94-PU-239(N,F),,SIG,,FIS)) 1080900400003 2(94-PU-239(N,F),,SIG,,FIS) 1080900400004 MONITOR 2(92-U-235(N,F),,SIG,,FIS) 1080900400005 MONIT-REF 2(10809002,H.T.HEATON+,C,75WASH,1,266,197503) 1080900400006 CORRECTION Corrected for fragment absorption, counts below 1080900400007 discriminator, isotopic impurities, dead time, 1080900400008 electronic background, contamination, inelastic 1080900400009 scattering perturbations. 1080900400010 ERR-ANALYS1(DATA-ERR) Errors given are standard deviations 1080900400011 2(DATA-ERR) Errors given include uncertainty in 1080900400012 . neutron source strength - 1.2%. 1080900400013 . elastic scattering correction - 1.3%, 1080900400014 . geometrical errors - 0.6%. 1080900400015 HISTORY (19781211C) 1080900400016 ENDBIB 14 0 1080900400017 COMMON 3 3 1080900400018 EN-DUMMY MONIT 2MONIT-ERR 2 1080900400019 MEV B B 1080900400020 2.13 1.216 0.019 1080900400021 ENDCOMMON 3 0 1080900400022 DATA 4 1 1080900400023 DATA 1DATA-ERR 1DATA 2DATA-ERR 2 1080900400024 NO-DIM PER-CENT MB MB 1080900400025 0.666 0.9 1824. 35. 1080900400026 ENDDATA 3 0 1080900400027 ENDSUBENT 26 0 1080900499999 SUBENT 10809005 20101103 13691080900500001 BIB 6 14 1080900500002 REACTION 1((93-NP-237(N,F),,SIG,,FIS)/(92-U-238(N,F),,SIG,,FIS)) 1080900500003 2(93-NP-237(N,F),,SIG,,FIS) 1080900500004 MONITOR 2(92-U-238(N,F),,SIG,,FIS) 1080900500005 MONIT-REF 2(10809002,H.T.HEATON+,C,75WASH,1,266,197503) 1080900500006 CORRECTION Corrected for fragment absorption, counts below 1080900500007 discriminator, isotopic impurities, dead time, 1080900500008 electronic background, contamination, inelastic 1080900500009 scattering perturbations. 1080900500010 ERR-ANALYS1(DATA-ERR) Errors given are standard deviations 1080900500011 2(DATA-ERR) Errors given include uncertainty in 1080900500012 . neutron source strength - 1.2%. 1080900500013 . elastic scattering correction - 1.3%, 1080900500014 . geometrical errors - 0.6%. 1080900500015 HISTORY (19781211C) 1080900500016 ENDBIB 14 0 1080900500017 COMMON 3 3 1080900500018 EN-DUMMY MONIT 2MONIT-ERR 2 1080900500019 MEV B B 1080900500020 2.13 1.216 0.019 1080900500021 ENDCOMMON 3 0 1080900500022 DATA 4 1 1080900500023 DATA 1DATA-ERR 1DATA 2DATA-ERR 2 1080900500024 NO-DIM PER-CENT MB MB 1080900500025 4.19 1.5 1366. 27. 1080900500026 ENDDATA 3 0 1080900500027 ENDSUBENT 26 0 1080900599999 ENDENTRY 5 0 1080999999999