ENTRY 40553 20230303 421240553 0 1 SUBENT 40553001 20230303 421240553 1 1 BIB 11 35 40553 1 2 TITLE Absolute measurements of fission cross-sections 40553 1 3 for U-233, Np-237 and Pu-239 by fission-spectrum 40553 1 4 neutrons of Cf-252 40553 1 5 AUTHOR (V.M.Adamov,L.V.Drapchinskij,S.S.Kovalenko, 40553 1 6 K.A.Petrzhak,G.Ju.Kudrjavtsev,L.A.Pleskachevskij, 40553 1 7 A.M.Sokolov) 40553 1 8 INSTITUTE (4RUSRI) 40553 1 9 REFERENCE ((C,77KIEV,3,158,1977)= 40553 1 10 (S,INDC(CCP)-118,(3),158,1977)) Data given 40553 1 11 (P,YFI-24,19,1977) 40553 1 12 (C,77NBS,,313,1977) 40553 1 13 Same 237Np(n,f) cross section given 40553 1 14 REL-REF (M,,V.M.Adamov+,S,INDC(CCP)-099,(6),19,1975) = 40553 1 15 (M,,V.M.Adamov+,C,75KIEV,6,19,1975) 40553 1 16 Experimental details. U-235, -238. 40553 1 17 (O,49547001,V.M.Adamov+,C,77NBS,,313,1977) 40553 1 18 Data for U-233,235,238,Pu-239 for 14.8 MeV and 40553 1 19 Cf252 spectrum. 40553 1 20 (O,40552003,V.M.Adamov+,C,77NBS,,313,1977) 40553 1 21 Np data for 14.8 MeV. 40553 1 22 MONITOR Absolute measurements 40553 1 23 METHOD (COINC,ASSOP) Coincidence of fission-fragment 40553 1 24 of Cf-252 with those of nucleus under study 40553 1 25 INC-SOURCE (CF252) 40553 1 26 INC-SPECT Fission spectrum of Cf-252 40553 1 27 DETECTOR (FISCH) 40553 1 28 HISTORY (19800307C) Compiled at the centre 40553 1 29 (19861021A) SAN 002, 004 deleted on the reason of data 40553 1 30 repetition in SAN 40547002, 40547008 40553 1 31 (20200315A) ref. C,77NBS,,313,1977 was added. 40553 1 32 Upper -> lower case correction. 40553 1 33 Dates were corrected for 4-digits year. 40553 1 34 Ref. C,75KIEV,6,19,1975 was moved in REL-REF. 40553 1 35 STATUS was added in data Subent. 40553 1 36 (20230303U) Subent 003 was corrected. 40553 1 37 ENDBIB 35 0 40553 1 38 COMMON 1 3 40553 1 39 KT 40553 1 40 MEV 40553 1 41 1.42 40553 1 42 ENDCOMMON 3 0 40553 1 43 ENDSUBENT 42 0 40553 199999 NOSUBENT 40553002 20200315 418640553 2 1 SUBENT 40553003 20230303 421240553 3 1 BIB 5 26 40553 3 2 REACTION (93-NP-237(N,F),,SIG,,FIS) 40553 3 3 DECAY-DATA (93-NP-237,2.11E+6YR) Half-life used for calc.of the 40553 3 4 number of nuclei in target is (2.11+-0.01)E+6 years 40553 3 5 ERR-ANALYS (ERR-1) Error of the NU-BAR of Cf-252 40553 3 6 (ERR-2) Error of the data from geometrical factor 40553 3 7 (ERR-3) Error in the solid angle arising at the 40553 3 8 weighing of the sample in the small-solid- 40553 3 9 angle camera 40553 3 10 (ERR-4) Statistical error arising at the sample 40553 3 11 weighing 40553 3 12 (ERR-5) Error of the isotope fraction determination 40553 3 13 arising at the sample weighing 40553 3 14 (ERR-6) Error of the fissionable isotope half-life 40553 3 15 arising at the sample weighing 40553 3 16 (ERR-7) Statistical error arising by the number-of- 40553 3 17 fissions determination 40553 3 18 (ERR-8) Error due to the extrapolation of the fission- 40553 3 19 fragments spectrum to zero-energy arising by 40553 3 20 the number-of-fission determination 40553 3 21 (ERR-9) Error due to the absorption in a layer by 40553 3 22 the number-of-fissions determination 40553 3 23 (ERR-T) Total error (absolute value 23. mb). 40553 3 24 STATUS (TABLE) Table 3 of Conf.Proc.77NBS,,313,1977 40553 3 25 Table 2 of INDC(CCP)-118,3,158,1977 40553 3 26 HISTORY (20230303U) ERR-T=23 mb was deleted from Data block 40553 3 27 according to memo CP-D/1070. 40553 3 28 ENDBIB 26 0 40553 3 29 COMMON 9 6 40553 3 30 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 40553 3 31 ERR-7 ERR-8 ERR-9 40553 3 32 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 40553 3 33 PER-CENT PER-CENT PER-CENT 40553 3 34 .35 .91 .3 .45 .1 .47 40553 3 35 .95 .41 .28 40553 3 36 ENDCOMMON 6 0 40553 3 37 DATA 3 1 40553 3 38 DATA ERR-T ERR-HL 40553 3 39 MB PER-CENT YR 40553 3 40 1442. 1.59 0.01E+6 40553 3 41 ENDDATA 3 0 40553 3 42 ENDSUBENT 41 0 40553 399999 NOSUBENT 40553004 20200315 418640553 4 1 ENDENTRY 4 0 4055399999999