ENTRY 32832 20231122 3283200000001 SUBENT 32832001 20231122 20240316 3283200100001 BIB 12 20 3283200100002 TITLE Measurement of the average number of prompt neutrons 3283200100003 of fission reaction of U-235, Th-232 induced by 3283200100004 neutrons of the fission spectrum 3283200100005 AUTHOR (Wang Yusheng, Zhou Youpu, Guo Shilun, Huang Shengnian)3283200100006 INSTITUTE (3CPRAEP) 3283200100007 REFERENCE (J,CST,6,1,1964) 3283200100008 FACILITY (REAC,3CPRAEP) Heavy water reactor 3283200100009 INC-SOURCE Fission neutrons produced by irradiation of 66.92 g 3283200100010 U3O8 powder by thermal neutron beam 3283200100011 SAMPLE A metal U-235 sheet (89.7+/-0.5% purity, 2.33 g weight,3283200100012 2.5 x 10 cm2 area) fixed in an ionization chamber. 3283200100013 42 Al foils (0.2 mm thick, 52 mm in diam.) coated on 3283200100014 both sides with thorium nitrate to form a multilayer 3283200100015 ionization chamber. 3283200100016 DETECTOR (BF3) 18 CHM-7 BF3 counter with 90% B-10. 3283200100017 METHOD (COINC) Slow-coincidence method. 3283200100018 ERR-ANALYS (DATA-ERR) mainly from statistics 3283200100019 STATUS (TABLE,,Wang Yusheng+,J,CST,6,1,1964) Abstract 3283200100020 HISTORY (20230915C) Liu Yangyang (CNDC) 3283200100021 (20231122A) On. Finalized. 3283200100022 ENDBIB 20 0 3283200100023 NOCOMMON 0 0 3283200100024 ENDSUBENT 23 0 3283200199999 SUBENT 32832002 20231122 20240316 3283200200001 BIB 2 4 3283200200002 REACTION ((92-U-235(N,F),PR,NU,,FIS)//(92-U-235(N,F),PR,NU)) 3283200200003 CORRECTION Correction of fission number caused by low energy 3283200200004 neutrons (21.5+/-1.5%) 3283200200005 U-238 and U-234 impurity correction (10.3+/-0.5)% 3283200200006 ENDBIB 4 0 3283200200007 NOCOMMON 0 0 3283200200008 DATA 4 1 3283200200009 KT-DUM-NM EN-DN DATA DATA-ERR 3283200200010 MEV EV NO-DIM NO-DIM 3283200200011 1.32 0.0253 1.11 0.03 3283200200012 ENDDATA 3 0 3283200200013 ENDSUBENT 12 0 3283200299999 SUBENT 32832003 20231122 20240316 3283200300001 BIB 4 5 3283200300002 REACTION (92-U-235(N,F),PR,NU,,FIS) 3283200300003 MONITOR (92-U-235(N,F),PR,NU) 3283200300004 MONIT-REF (,Hughes,J,NUC,17,(11),132,1959) 3283200300005 STATUS (DEP,32832002) Ratio to the multiplicity for thermal 3283200300006 fission. 3283200300007 ENDBIB 5 0 3283200300008 NOCOMMON 0 0 3283200300009 DATA 6 1 3283200300010 KT-DUMMY DATA DATA-ERR EN-NRM MONIT MONIT-ERR 3283200300011 MEV PRT/FIS PRT/FIS EV PRT/FIS PRT/FIS 3283200300012 1.32 2.69 0.07 0.0253 2.43 0.02 3283200300013 ENDDATA 3 0 3283200300014 ENDSUBENT 13 0 3283200399999 SUBENT 32832004 20231122 20240316 3283200400001 BIB 2 2 3283200400002 REACTION ((90-TH-232(N,F),PR,NU,,FIS)//(92-U-235(N,F),PR,NU)) 3283200400003 CORRECTION Geometric correction (1.015) 3283200400004 ENDBIB 2 0 3283200400005 NOCOMMON 0 0 3283200400006 DATA 4 1 3283200400007 KT-DUM-NM EN-DN DATA DATA-ERR 3283200400008 MEV EV NO-DIM NO-DIM 3283200400009 1.32 0.0253 1.05 0.02 3283200400010 ENDDATA 3 0 3283200400011 ENDSUBENT 10 0 3283200499999 SUBENT 32832005 20231122 20240316 3283200500001 BIB 4 5 3283200500002 REACTION (90-TH-232(N,F),PR,NU,,FIS) 3283200500003 MONITOR (92-U-235(N,F),PR,NU) 3283200500004 MONIT-REF (,Hughes,J,NUC,17,(11),132,1959) 3283200500005 STATUS (DEP,32832004) Ratio to the multiplicity for thermal 3283200500006 fission. 3283200500007 ENDBIB 5 0 3283200500008 NOCOMMON 0 0 3283200500009 DATA 6 1 3283200500010 KT-DUMMY DATA DATA-ERR EN-NRM MONIT MONIT-ERR 3283200500011 MEV PRT/FIS PRT/FIS EV PRT/FIS PRT/FIS 3283200500012 1.32 2.56 0.06 0.0253 2.43 0.02 3283200500013 ENDDATA 3 0 3283200500014 ENDSUBENT 13 0 3283200599999 ENDENTRY 5 0 3283299999999