ENTRY 10941 20160920 14221094100000001 SUBENT 10941001 20160920 14221094100100001 BIB 5 8 1094100100002 TITLE Absolute measurement of nu-bar for Cf-252 1094100100003 AUTHOR (J.R.Smith,S.D.Reeder,R.J.Gehrke) 1094100100004 REFERENCE (R,EPRI-NP-3436,(1),1984) Final publication. 1094100100005 (J,ANS,35,549,198011) Preliminary data. 1094100100006 INSTITUTE (1USAINL,1USAACC,1USAEGG) 1094100100007 HISTORY (19810209C) 1094100100008 (20160920A) BP: Updated to new date formats,lower case.1094100100009 corrections according last EXFOR rules and Dict. 1094100100010 ENDBIB 8 0 1094100100011 NOCOMMON 0 0 1094100100012 ENDSUBENT 11 0 1094100199999 SUBENT 10941002 20160825 14221094100200001 BIB 8 35 1094100200002 REACTION (98-CF-252(0,F),,NU) 1094100200003 DETECTOR (FISCH,SCIN) Fission chamber #4 produced best 1094100200004 results. Double fission chambers to detect fission 1094100200005 fragments. NE-213 scintillator with pulse shape 1094100200006 discrimination to detect fission neutrons. 1094100200007 SAMPLE Four fission foils were used. Foil #1 contains 0.052 1094100200008 microg of 252Cf, foil #2 0.17 microg of 252Cf. These 1094100200009 foils were mounted on nickel backings, approximately 1094100200010 110 microg/cm2 thick, supported by copper layer of 3 1094100200011 mg/cm2 thick. Both foils were coated with 26 1094100200012 microg/cm2 of gold to suppress self-transfer of the 1094100200013 Cf. Foils #3 and #4 were also prepared by 1094100200014 self-transfer method. These foils also contained 249, 1094100200015 250,251Cf with traces of 253,254Cf. 1094100200016 METHOD (MANGB,COINC) The total emission rate of 252Cf was 1094100200017 measured in the manganese bath (MnSO4 solution). The 1094100200018 fission rate was determined by neutron-fission 1094100200019 coincidence measurement on the same 252Cf source for 1094100200020 which the neutron emission rate was measured. 1094100200021 ERR-ANALYS (DATA-ERR) Ratio of of source strength value of FC #4 1094100200022 with its fission rate yields. 1094100200023 (ERR-SYS) Quadrature Sum. 1094100200024 (ERR-1) 252Cf half-life. 1094100200025 (ERR-2) Sulfur absorption cross section. 1094100200026 (ERR-3) Calibrations. 1094100200027 (ERR-4) Fast-neutron absorption. 1094100200028 (ERR-5) Leakage. 1094100200029 (ERR-6) Chemistry. 1094100200030 (ERR-7) Structural absorption. 1094100200031 DECAY-DATA (98-CF-250,13.2YR) 1094100200032 (98-CF-252,2.651YR) 1094100200033 (98-CF-254,61.9D) 1094100200034 STATUS (TABLE) page S-2 of R,EPRI-NP-3436,1984. 1094100200035 HISTORY (20160920A) BP: Updated subentry using the final 1094100200036 publication. 1094100200037 ENDBIB 35 0 1094100200038 COMMON 8 6 1094100200039 ERR-SYS ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 1094100200040 ERR-6 ERR-7 1094100200041 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 1094100200042 PER-CENT PER-CENT 1094100200043 0.24 0.10 0.10 0.13 0.10 0.021094100200044 0.10 0.05 1094100200045 ENDCOMMON 6 0 1094100200046 DATA 2 1 1094100200047 DATA DATA-ERR 1094100200048 PRT/FIS PRT/FIS 1094100200049 3.767 0.010 1094100200050 ENDDATA 3 0 1094100200051 ENDSUBENT 50 0 1094100299999 ENDENTRY 2 0 1094199999999