ENTRY 30634 20210512 32003063400000001 SUBENT 30634001 20210512 32003063400100001 BIB 11 34 3063400100002 TITLE Absolute measurements of fission cross sections for 3063400100003 235U and 239Pu fission induced by 14.7 MeV neutron 3063400100004 using the associated particle method 3063400100005 AUTHOR (Li Jingwen, Li Anli, Rong Chaofan, Ye Zhongyuan, 3063400100006 Wu Jingxia, Hao Xiuhong) 3063400100007 INSTITUTE (3CPRAEP) 3063400100008 REFERENCE (J,CNP,5,45,1983) in Chinese 3063400100009 (R,IAEA-336,343,1984) Same data given 3063400100010 (C,82ANTWER,,55,1982) Same as IAEA-336,343,1984 3063400100011 FACILITY (CCW,3CPRAEP) 600 kV Cockroft-Walton accelerator 3063400100012 INC-SOURCE (D-T) 220.keV deuterons on T-Ti target (0.6-1 mg/cm2) 3063400100013 backed by Mo (0.2 mm thick) 3063400100014 DETECTOR (FISCH) Cylindrical fission ionization chamber 3063400100015 (100 mm in diam., 50 mm in length) filled with 3063400100016 methan (1 atm) 3063400100017 (SCIN) Plastic scintillator for alpha detection at 3063400100018 135 deg 3063400100019 METHOD (ASSOP) Absolute measurement by time correlated 3063400100020 associated particle technique 3063400100021 CORRECTION Corrected for 3063400100022 - fission detector efficiency 3063400100023 - neutron flux attenuation in samples 3063400100024 - fission events due to other isotopes in the sample 3063400100025 STATUS (TABLE) Abstract of Chinese J.Nucl.Phys.5(1983)45 3063400100026 HISTORY (19821006C) compiled by VP. 3063400100027 (19830602U) CO. -Add. New ref. Other minor corrections3063400100028 (19850215U) OS. Country code corrected. 3063400100029 (19870206U)-WD-new reference added 3063400100030 (20070821A) SD. BIB section updated. Data headings for 3063400100031 uncertainties corrected 3063400100032 (20170719A) On. Major revisions in 002 and 003. 3063400100033 (20171207U) On. Minor revision in 003. 3063400100034 (20181211U) On. FACILITY corrected. 3063400100035 (20210512A) On. Major revision in 003. 3063400100036 ENDBIB 34 0 3063400100037 NOCOMMON 0 0 3063400100038 ENDSUBENT 37 0 3063400199999 SUBENT 30634002 20170719 31793063400200001 BIB 5 20 3063400200002 REACTION (92-U-235(N,F),,SIG) 3063400200003 SAMPLE Uranium (26 mm in diam.,271 ug/cm2 or 407 ug/cm2 thick)3063400200004 electrodeposited on Pt (40 um thick, 40 mm diam.) 3063400200005 (92-U-235,ENR=0.905) 3063400200006 (92-U-238,ENR=0.085) 3063400200007 (92-U-234,ENR=0.010) 3063400200008 REL-REF (N,30721002,Li Jingwen+,J,CNP,10,237,1988) 3063400200009 235U(n,f) at 14.2 MeV possibly with the same sample 3063400200010 ERR-ANALYS (ERR-T) Total uncertainty (1.92%) propagated from 3063400200011 (ERR-1) areal sample density (1.00%) 3063400200012 (ERR-2) fission chamber detector efficiency (0.42%) 3063400200013 (ERR-S) statistics (0.88%) 3063400200014 (ERR-3) effects of incident neutron momentum, 3063400200015 self-absorption of fragment in sample, and 3063400200016 anisotropic of fission fragments (0.30%) 3063400200017 (ERR-4,,1.10) uniformity of sample (<1.10%) 3063400200018 (ERR-5) neutron attenuation (0.27%) 3063400200019 (ERR-6) fission of other than 235U (0.60%) 3063400200020 HISTORY (19830602U) KO. -Detail of error analysis from new ref.3063400200021 (20170719A) On. ERR-ANALYS updated. ERR-T revised. 3063400200022 ENDBIB 20 0 3063400200023 COMMON 5 3 3063400200024 ERR-1 ERR-2 ERR-3 ERR-5 ERR-6 3063400200025 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 3063400200026 1.00 0.42 0.30 0.27 0.60 3063400200027 ENDCOMMON 3 0 3063400200028 DATA 4 1 3063400200029 EN DATA ERR-T ERR-S 3063400200030 MEV B PER-CENT PER-CENT 3063400200031 14.7 2.098 1.92 0.88 3063400200032 ENDDATA 3 0 3063400200033 ENDSUBENT 32 0 3063400299999 SUBENT 30634003 20210512 32003063400300001 BIB 4 20 3063400300002 REACTION (94-PU-239(N,F),,SIG) 3063400300003 SAMPLE Plutonium (26 mm in diam., 193 ug/cm2 thick) 3063400300004 electrodeposited on Pt (40 um thick, 40 mm diam.) 3063400300005 (94-PU-239,ENR=0.969) 3063400300006 (94-PU-240,ENR=0.030) 3063400300007 (94-PU-241,ENR=0.001) 3063400300008 ERR-ANALYS (ERR-T) Total uncertainty (1.98%) propagated from 3063400300009 (ERR-1) areal sample density (1.08%) 3063400300010 (ERR-2) fission chamber detector efficiency (0.66%) 3063400300011 (ERR-S) statistics (0.70%) 3063400300012 (ERR-3) effects of incident neutron momentum, 3063400300013 self-absorption of fragment in sample, and 3063400300014 anisotropic of fission fragments (0.23%) 3063400300015 (ERR-4,,1.20) uniformity of sample (<1.20%) 3063400300016 (ERR-5) neutron attenuation (0.27%) 3063400300017 (ERR-6) fission of other than 239Pu (0.30%) 3063400300018 HISTORY (19830602U) KO.-Detail of error analysis from new ref.-3063400300019 (20170719A) On. ERR-ANALYS updated. ERR-T revised. 3063400300020 (20171207U) On. ERR-ANALYS(ERR-6): Free text corrected.3063400300021 (20210512A) On. ERR-4: 1.10 -> 1.20 in code field. 3063400300022 ENDBIB 20 0 3063400300023 COMMON 5 3 3063400300024 ERR-1 ERR-2 ERR-3 ERR-5 ERR-6 3063400300025 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 3063400300026 1.08 0.66 0.23 0.27 0.30 3063400300027 ENDCOMMON 3 0 3063400300028 DATA 4 1 3063400300029 EN DATA ERR-T ERR-S 3063400300030 MEV B PER-CENT PER-CENT 3063400300031 14.7 2.532 1.98 0.70 3063400300032 ENDDATA 3 0 3063400300033 ENDSUBENT 32 0 3063400399999 ENDENTRY 3 0 3063499999999