ENTRY 13426 20220317 1342600000001 SUBENT 13426001 20220317 20230412 1342600100001 BIB 11 40 1342600100002 TITLE Yield of Kr85 and Xe133 in the thermal neutron 1342600100003 fission of U235 and yield of Kr85 in the thermal 1342600100004 neutron fission of Pu239 1342600100005 AUTHOR (S.Katcoff,W.Rubinson) 1342600100006 REFERENCE (R,BNL-1652,1953) Original publication. 1342600100007 (J,JIN,27,1447,1965) Journal publication. 1342600100008 #doi:10.1016/0022-1902(65)80001-x 1342600100009 REL-REF (O,13371001,S.Katcoff+,J,PR,91,1458,1953) Independent 1342600100010 and cumulative yields ratios from the same experiment. 1342600100011 (I,13371001,S.Katcoff+,J,PR,91,1458,1953) 1342600100012 the double-chamber fission counting apparatus. 1342600100013 INSTITUTE (1USABNL) 1342600100014 FACILITY (REAC,1USABNL) Brookhaven pile. 1342600100015 INC-SPECT 2x10**11 n/cm**2/sec, the flux was constant to +- 2% 1342600100016 after reaching its full value. 1342600100017 DETECTOR (PROPC,FISCH) Two gas proportional counters with 1342600100018 silver cathodes, 2 cm dia. and 30 cm long. The 1342600100019 krypton pressure was about 300 mm and methane was 1342600100020 added to bring the total pressure to 1 atm. 1342600100021 SAMPLE The fission foils, which consist of 0.01 microg of 1342600100022 235U or 239Pu deposited on a Pt disk 0.002 inch thick 1342600100023 and 1 inch in diameter. 1342600100024 METHOD (CHSEP,FISCT) Absolute radiochemical methods, fission 1342600100025 yields to half life (Y/T). Foils were mounted on 1342600100026 platinum in each of the two chambers of fission 1342600100027 counting apparatus. The entire assembly was then 1342600100028 irradiated in the brookhaven graphite reactor for 1342600100029 6-12 hr, and the fission counting rates of the foils 1342600100030 were recorded continuously. After irradiation the 1342600100031 85Kr was radiochemically separated from the slug, 1342600100032 purified, and its activity measured by internal gas 1342600100033 phase proportional counting. From these values of the 1342600100034 85Kr activity and the measured number of fissions the 1342600100035 fission yield was calculated. 1342600100036 HISTORY (19900111C) VM 1342600100037 (20220317A) BP: Updated to new date formats, lower 1342600100038 case. Corrections according last EXFOR rules and 1342600100039 Dict. Replaced RIDER's data with the original 1342600100040 publication, updated METHOD, added FACILITY, INC-SPECT,1342600100041 REL-REF. 1342600100042 ENDBIB 40 0 1342600100043 COMMON 1 3 1342600100044 EN-DUMMY 1342600100045 EV 1342600100046 0.0253 1342600100047 ENDCOMMON 3 0 1342600100048 ENDSUBENT 47 0 1342600199999 SUBENT 13426002 20220317 20230412 1342600200001 BIB 6 14 1342600200002 REACTION (92-U-235(N,F)36-KR-85-G,CUM,FY,,SPA) 1342600200003 SAMPLE (92-U-235,ENR=0.9372) 1342600200004 ERR-ANALYS (DATA-ERR) The standard deviation is 1.59% of Y/T. As 1342600200005 concern for possible systematic errors. We feel that 1342600200006 is unlikely that measured Y/T values differ from true 1342600200007 more than 3%. Which we adopt as our accuracy estimate. 1342600200008 (ERR-1) 1% per slug fissions. 1342600200009 (ERR-2) 2% for 85Kr activity. 1342600200010 DECAY-DATA ((1.)36-KR-85-G,10.27YR) 10.27+-0.18 years 1342600200011 ((2.)36-KR-85-G,10.8YR) 1342600200012 STATUS (TABLE) page 49 of R,BNL-1652,1953. 1342600200013 (SPSDD,13215002) 1342600200014 HISTORY (20220317A) BP: Replaced RIDER's data with the 1342600200015 original published data. Added STATUS (SPSDD) 1342600200016 ENDBIB 14 0 1342600200017 COMMON 2 3 1342600200018 ERR-1 ERR-2 1342600200019 PER-CENT PER-CENT 1342600200020 1.0 2.0 1342600200021 ENDCOMMON 3 0 1342600200022 DATA 3 2 1342600200023 DATA DATA-ERR DECAY-FLAG 1342600200024 PC/FIS PER-CENT NO-DIM 1342600200025 0.260 2.36 1. 1342600200026 0.273 1.9 2. 1342600200027 ENDDATA 4 0 1342600200028 ENDSUBENT 27 0 1342600299999 SUBENT 13426003 20220317 20230412 1342600300001 BIB 5 9 1342600300002 REACTION (94-PU-239(N,F)36-KR-85-G,CUM,FY,,SPA) 1342600300003 ERR-ANALYS (DATA-ERR) Standard deviation per determination of Y/T 1342600300004 is 4.3%. 1342600300005 DECAY-DATA ((1.)36-KR-85-G,10.27YR) 10.27+-0.18 years 1342600300006 ((2.)36-KR-85-G,10.8YR) 1342600300007 STATUS (TABLE) page 49 of R,BNL-1652,1953. 1342600300008 (SPSDD,13215003) 1342600300009 HISTORY (20220317A) BP: Replaced RIDER's data with the 1342600300010 original published data. Added STATUS (SPSDD) 1342600300011 ENDBIB 9 0 1342600300012 NOCOMMON 0 0 1342600300013 DATA 3 2 1342600300014 DATA DATA-ERR DECAY-FLAG 1342600300015 PC/FIS PER-CENT NO-DIM 1342600300016 0.094 4.8 1. 1342600300017 0.0994 4.4 2. 1342600300018 ENDDATA 4 0 1342600300019 ENDSUBENT 18 0 1342600399999 SUBENT 13426004 20220317 20230412 1342600400001 BIB 4 7 1342600400002 REACTION ((92-U-235(N,F)54-XE-133,CUM,FY,,SPA)/ 1342600400003 (92-U-235(N,F)36-KR-85-G,CUM,FY,,SPA)) 1342600400004 DECAY-DATA (54-XE-133-G,5.27D) 1342600400005 (36-KR-85-G,10.8YR) 1342600400006 STATUS (TABLE) Table XIII, page 54 of R,BNL-1652,1953. 1342600400007 HISTORY (20220317A) BP: Updated subentry to reflect the 1342600400008 original publication. 1342600400009 ENDBIB 7 0 1342600400010 NOCOMMON 0 0 1342600400011 DATA 1 1 1342600400012 DATA 1342600400013 NO-DIM 1342600400014 24.0 1342600400015 ENDDATA 3 0 1342600400016 ENDSUBENT 15 0 1342600499999 ENDENTRY 4 0 1342699999999