ENTRY O0648 20120604 O048O064800000001 SUBENT O0648001 20120604 O048O064800100001 BIB 19 52 O064800100002 TITLE Asymmetric fission of bismuth O064800100003 AUTHOR (T.T.Sugihara,J.Roesmer,J.W.Meadows Jr) O064800100004 INSTITUTE (1USACLK,1USAHRV) O064800100005 REFERENCE (J,PR,121,1179,1961) O064800100006 REL-REF (I,,T.T.Sugihara+,J,RSI,24,511,1953) Description of theO064800100007 Detectors. O064800100008 (R,,D.Strominger+,J,RMP,30,585,1958) Decay Data. O064800100009 (R,,T.T.Sugihara+,J,PR,108,1264,1957) Corrections to O064800100010 Beta Counting Rates. O064800100011 FACILITY (SYNCY,1USAHRV) O064800100012 SAMPLE Targets, 100 mg/cm**2 thick, 1*2 cm size, were O064800100013 prepared from bismuth metal. Impurities, by weight: O064800100014 uranium, 1.5*10**(-6); zinc,1.9+-0.3*10**(-6). O064800100015 METHOD (INTB,SITA,ACTIV,MOSEP,REC,RCHEM,BSPEC). O064800100016 DETECTOR (GEMUC) Flow beta geiger counters. For details see O064800100017 REL-REF. O064800100018 PART-DET (B-). O064800100019 MONITOR (83-BI-209(P,F)38-SR-91,CUM,SIG) Relative O064800100020 monitor. O064800100021 ((MONIT)29-CU-65(P,N+P)29-CU-64,,SIG) O064800100022 Absolute Monitor. O064800100023 MONIT-REF (B0054006,J.W.Meadows,J,PR,91,885,1953) O064800100024 for absolute monitor O064800100025 ANALYSIS (DECAY) Nuclides were identified by chemical behavior, O064800100026 half-life, and beta absorption curves. O064800100027 (AREA) Total fission cross sections were obtained by O064800100028 summing the mass distributions. O064800100029 CORRECTION Performed: Recoil loss of bismuth fission fragments, O064800100030 never more Than 0.5%. O064800100031 Negligible: Formation of the studied products in O064800100032 interactions with the uranium and zinc impurities. O064800100033 COMMENT -By Authors- The incident energy values quoted here O064800100034 are most probable values. The spread in energy is O064800100035 about 10 MeV. O064800100036 -By Compiler- A correction should have been performed O064800100037 that takes into account a strong energy dependence of O064800100038 The fission cross section. O064800100039 -By Compiler- The specified product of the absolute O064800100040 monitor reaction could be formed also through O064800100041 Cu-63(n,gamma) reaction due to low-energy neutron O064800100042 background. O064800100043 ERR-ANALYS (DATA-ERR) Complete analysis is not given by authors. O064800100044 The Quoted errors do not include the uncertainties in O064800100045 the monitor cross section. O064800100046 ADD-RES (A-DIS) Fission product yields. O064800100047 STATUS (TABLE) From Tabl.1 of PR,121,1179,1961 O064800100048 HISTORY (19980505C) By Khlopin's Institute - A.P. O064800100049 (19980604A) Monitor is corrected. O064800100050 (19980604U) Last checking has been done. O064800100051 (20000424A) DATE is corrected O064800100052 (20120604A) SD; SF9=EXP deleted from REACTION code O064800100053 in Subent 2; cosmetic corrections. O064800100054 ENDBIB 52 0 O064800100055 NOCOMMON 0 0 O064800100056 ENDSUBENT 55 0 O064800199999 SUBENT O0648002 20120604 O048O064800200001 BIB 1 1 O064800200002 REACTION (83-BI-209(P,F),,SIG) O064800200003 ENDBIB 1 0 O064800200004 COMMON 1 3 O064800200005 DATA-ERR O064800200006 PER-CENT O064800200007 40. O064800200008 ENDCOMMON 3 0 O064800200009 DATA 3 2 O064800200010 EN DATA MONIT O064800200011 MEV MB MB O064800200012 36. 1.9 348. O064800200013 58. 11.3 254. O064800200014 ENDDATA 4 0 O064800200015 ENDSUBENT 14 0 O064800299999 ENDENTRY 2 0 O064899999999