ENTRY 40150 20150109 41724015000000001 SUBENT 40150001 20150109 41724015000100001 BIB 15 62 4015000100002 INSTITUTE (4RUSKUR) 4015000100003 REFERENCE (J,SNP,17,12,1973) Eng.trans.of YF,17,(1),24,1973 4015000100004 (J,YF,17,(1),24,1973) Data given 4015000100005 AUTHOR (E.F.Fomushkin,E.K.Gutnikova,B.K.Maslennikov, 4015000100006 A.M.Korochkin) 4015000100007 TITLE Measurement of the effective cross section for the 4015000100008 fission of the Cm-244 -248 isotopes by neutrons 4015000100009 from a fast reactor 4015000100010 FACILITY (REAC,4RUSKUR) 4015000100011 INC-SOURCE (REAC) Critical assembly of GODIVA type 4015000100012 INC-SPECT Neutron spectrum in the assembly was similar to 4015000100013 fission spectrum and some softened by means of 4015000100014 inelastic scattering 4015000100015 DETECTOR (GLASD) Glass detector 4015000100016 (IOCH) Ionization chambers were used during the 4015000100017 irradiation time to monitor the external flux 4015000100018 of neutrons from the reactor 4015000100019 MONITOR 2(92-U-235(N,F),,SIG,,SPA) 4015000100020 averaged on fast reactor spectrum 4015000100021 Standard value was corrected on admixtures of U-238 4015000100022 and U-234. 4015000100023 SAMPLE - U reference sample content: 4015000100024 U-235 - (1.640+-0.025)*10**15 nuclei, 4015000100025 U-238 - (1.82 +-0.03 )*10**14 nuclei, 4015000100026 U-234 - (2.30 +-0.04 )*10**12 nuclei , 4015000100027 determined from alpha-activity ; isotopic composition 4015000100028 was checked by mass spectrometer. 4015000100029 - Cm layers were prepared by electromagnetic separator4015000100030 deposited on tantalum backings by electrolysis of 4015000100031 nitric-acid solution; 4015000100032 isotopic composition was measured by a 4015000100033 three-ribbon-source mass spectrometer. 4015000100034 Cm samples of 10**-9 - 10**-11 g. 4015000100035 ANALYSIS The scanning of the detectors and the counting of the 4015000100036 tracks from the fission fragments were performed 4015000100037 independently with microscopes by two observers. The 4015000100038 results were practically the same for all the detectors4015000100039 PART-DET (FF) Fission fragments 4015000100040 Registration efficiency 18.65+-0.35 % . 4015000100041 STATUS (TABLE) Tbl.III from YF,17,(1),24,1973 4015000100042 ERR-ANALYS (ERR-T) Total error includes contribution: 4015000100043 - mass-analysis error ( Table 1), 4015000100044 - registration of the fission fragments ( stat.error, 4015000100045 Table 2), 4015000100046 - calculation of the specific spontaneous-fission 4015000100047 activity of samples 4015000100048 ( these three above are mentioned by authors as 4015000100049 relative stat.error) 4015000100050 - and 4015000100051 (ERR-1) systematic error due to uncertainties 4015000100052 in nuclei number and detector efficiency 4015000100053 equal to 2.1% for all isotopes. 4015000100054 HISTORY (19740525C) 4015000100055 (20150109A) SD: Updated to new date formats,lower case.4015000100056 Ref.on Engl.trans. of YF added. Author's name 4015000100057 corrected (Korobkin -> Korochkin). DATA-ERR -> ERR-S4015000100058 in Subents 2-6. BIB updated (Detector IOCH and 4015000100059 ANALYSIS added). 4015000100060 (20151021A) M.M. Article was checked, BIB information 4015000100061 was updated in TITLE,MONITOR, 4015000100062 SAMPLE, REL-REF were added. 4015000100063 ERR-S -> ERR-T (rms). 4015000100064 ENDBIB 62 0 4015000100065 COMMON 2 3 4015000100066 MONIT ERR-1 4015000100067 B PER-CENT 4015000100068 1.27 2.1 4015000100069 ENDCOMMON 3 0 4015000100070 ENDSUBENT 69 0 4015000199999 SUBENT 40150002 20150109 41724015000200001 BIB 3 11 4015000200002 REACTION 1((96-CM-244(N,F),,SIG,,SPA)/ 4015000200003 (92-U-235(N,F),,SIG,,SPA)) 4015000200004 2(96-CM-244(N,F),,SIG,,SPA) 4015000200005 SAMPLE Relative content: 4015000200006 Cm-244 - 1.000, Cm-245 < 2.*10**-4 , 4015000200007 Cm-246 - (6.28+-0.20)*10**-3 , Cm-247 - 5.*10**-5, 4015000200008 Cm-248 < 3.*10**-4 . 4015000200009 REL-REF (A,40779008,E.F.Fomushkin+,J,YF,5,966,1967) 4015000200010 Agree in error limits with 1.45+-0.15 b . 4015000200011 (A,40779008,E.F.Fomushkin+,J,SNP,5,689,1967) 4015000200012 Engl.translation of YF,5,966,1967 . 4015000200013 ENDBIB 11 0 4015000200014 NOCOMMON 0 0 4015000200015 DATA 5 1 4015000200016 EN-DUMMY DATA 1ERR-T 1DATA 2ERR-T 2 4015000200017 MEV NO-DIM NO-DIM B B 4015000200018 1. 1.003 0.028 1.28 0.04 4015000200019 ENDDATA 3 0 4015000200020 ENDSUBENT 19 0 4015000299999 SUBENT 40150003 20150109 41724015000300001 BIB 2 7 4015000300002 REACTION 1((96-CM-245(N,F),,SIG,,SPA)/ 4015000300003 (92-U-235(N,F),,SIG,,SPA)) 4015000300004 2(96-CM-245(N,F),,SIG,,SPA) 4015000300005 SAMPLE Relative content: 4015000300006 Cm-244 - 1.167+-0.009, Cm-245 - 1.000, 4015000300007 Cm-246 - 0.3060+-0.0026, Cm-247 - (1.9+-0.3)*10**-3, 4015000300008 Cm-248 ~ 1.*10**-3 . 4015000300009 ENDBIB 7 0 4015000300010 NOCOMMON 0 0 4015000300011 DATA 5 1 4015000300012 EN-DUMMY DATA 1ERR-T 1DATA 2ERR-T 2 4015000300013 MEV NO-DIM NO-DIM B B 4015000300014 1. 1.579 0.157 2.01 0.020 4015000300015 ENDDATA 3 0 4015000300016 ENDSUBENT 15 0 4015000399999 SUBENT 40150004 20150109 41724015000400001 BIB 2 7 4015000400002 REACTION 1((96-CM-246(N,F),,SIG,,SPA)/ 4015000400003 (92-U-235(N,F),,SIG,,SPA)) 4015000400004 2(96-CM-246(N,F),,SIG,,SPA) 4015000400005 SAMPLE Relative content: 4015000400006 Cm-244 - (3.90+-0.07)*10**-3, 4015000400007 Cm-245 - (2.44+-0.53)*10**-4, Cm-246 -1.000, 4015000400008 Cm-247 - (2.04+-0.53)*10**-4, Cm-248 < 5.6*10**-3 . 4015000400009 ENDBIB 7 0 4015000400010 NOCOMMON 0 0 4015000400011 DATA 5 1 4015000400012 EN-DUMMY DATA 1ERR-T 1DATA 2ERR-T 2 4015000400013 MEV NO-DIM NO-DIM B B 4015000400014 1. 0.686 0.019 0.87 0.03 4015000400015 ENDDATA 3 0 4015000400016 ENDSUBENT 15 0 4015000499999 SUBENT 40150005 20150109 41724015000500001 BIB 2 8 4015000500002 REACTION 1((96-CM-247(N,F),,SIG,,SPA)/ 4015000500003 (92-U-235(N,F),,SIG,,SPA)) 4015000500004 2(96-CM-247(N,F),,SIG,,SPA) 4015000500005 SAMPLE Relative content: 4015000500006 Cm-244 - (6.98+-0.10)*10**-3, 4015000500007 Cm-245 - (1.09+-0.09)*10**-3 , 4015000500008 Cm-246 - 0.2384+-0.0015, Cm-247 - 1.000, 4015000500009 Cm-248 < or = 2.2*10**-2 . 4015000500010 ENDBIB 8 0 4015000500011 NOCOMMON 0 0 4015000500012 DATA 5 1 4015000500013 EN-DUMMY DATA 1ERR-T 1DATA 2ERR-T 2 4015000500014 MEV NO-DIM NO-DIM B B 4015000500015 1. 1.500 0.077 1.91 0.10 4015000500016 ENDDATA 3 0 4015000500017 ENDSUBENT 16 0 4015000599999 SUBENT 40150006 20150109 41724015000600001 BIB 2 8 4015000600002 REACTION 1((96-CM-248(N,F),,SIG,,SPA)/ 4015000600003 (92-U-235(N,F),,SIG,,SPA)) 4015000600004 2(96-CM-248(N,F),,SIG,,SPA) 4015000600005 SAMPLE Relative content: 4015000600006 Cm-244 - (5.93+-0.10)*10**-2, 4015000600007 Cm-245 - (2.4+-0.2)*10**-4 , 4015000600008 Cm-246 - (2.127+-0.024)*10**-2, 4015000600009 Cm-247 - (3.84+-0.06)*10**-3, Cm-248 - 1.000 . 4015000600010 ENDBIB 8 0 4015000600011 NOCOMMON 0 0 4015000600012 DATA 5 1 4015000600013 EN-DUMMY DATA 1ERR-T 1DATA 2ERR-T 2 4015000600014 MEV NO-DIM NO-DIM B B 4015000600015 1. 0.683 0.045 0.93 0.06 4015000600016 ENDDATA 3 0 4015000600017 ENDSUBENT 16 0 4015000699999 ENDENTRY 6 0 4015099999999