ENTRY 40911 20240613 421740911000 1 SUBENT 40911001 20240613 421740911001 1 BIB 12 64 40911001 2 TITLE Absolute measurements of the fission cross-sections 40911001 3 for heavy isotopes by the neutrons with energies 40911001 4 2.6, 8.4 and 14.7 MeV 40911001 5 AUTHOR (I.D.Alkhazov, E.A.Ganza, L.V.Drapchinskiy, V.N.Dushin,40911001 6 S.S.Kovalenko, O.I.Kostochkin, K.A.Petrzhak, 40911001 7 A.V.Fomichev, V.I.Shpakov, R.Arlt, W.Wagner, M.Josch, 40911001 8 G.Musiol, H.-G.Ortlepp, G.Pausch) 40911001 9 REFERENCE (C,83MOSKVA,2,201,1983) Proceedings (Materialy) of the 40911001 10 3-d All-Union Conference on the 40911001 11 Neutron Radiation Metrology at 40911001 12 Reactors and Accelerators, 40911001 13 Moscow, TzNIIAtomInform, 1983 40911001 14 (J,SJA,55,656,1983) Engl.translation of AE,55,218,1983 40911001 15 (J,AE,55,218,1983) First author V.N.Dushin. 40911001 16 INSTITUTE (4RUSRI ) 40911001 17 (2GERDRE) Former 3DDRTUD 40911001 18 REL-REF (O,40547015,V.M.Adamov+,C,79KNOX,,995,1979) 40911001 19 U-238(N,F),,SIG measured in 4RUSRI, 40911001 20 1.178+-0.024 b at energy region 14.5 - 14.7 MeV 40911001 21 in Table 3 of Conf.Proc.83MOSKVA,v.2,p.201,1983; 40911001 22 1.178+-0.024 b at 14.7+-0.2 MeV in C,79KNOX,,995,1979 40911001 23 (O,30558001,V.N.Dushin+,J,SJA,55,656,1983) 40911001 24 Subent 002 - U-235, Subent 003 - Np-237. 40911001 25 Data measured at 2GERDRE. 40911001 26 INC-SOURCE (D-T,D-D) 40911001 27 MONITOR Absolute measurements 40911001 28 METHOD (ASSOP) Method of the associated particles - 40911001 29 neutrons and He-4/He-3 from T(d,n)He-4 and D(d,n)He-4 40911001 30 reactions. 40911001 31 Coincidence between fission and associated particles. 40911001 32 ANALYSIS CS was determined by formula: 40911001 33 SIG=Nc/(Nap*Nnucl), where 40911001 34 Nc - number of coincidences, 40911001 35 Nap - number of associated particles, 40911001 36 Nnucl - number of nuclei per 1 cm2 in sample. 40911001 37 CORRECTION - on the neutron flux attenuation - 1. to 3. %, 40911001 38 - on the background in the associated particles 40911001 39 channel - 0.3 to 3. %, 40911001 40 on the zero-threshold suppression extrapolation - 40911001 41 0.5 to 1.5 %, 40911001 42 - on the fission-fragments absorption in a layer -1.%, 40911001 43 - on the random coincidence - 2.5 %. 40911001 44 ERR-ANALYS (ERR-T) Total uncertainty. 40911001 45 Sources of uncertainty: 40911001 46 Neutron beam on sample: 40911001 47 (ERR-1,0.2,0.5) the neutron flux attenuation 40911001 48 (ERR-2,0.1,0.5) the associated particles background 40911001 49 (ERR-3,0.5,1.0) the sample non-uniformity 40911001 50 Determination of fission events: 40911001 51 (ERR-4,0.2,0.7) the zero-threshold suppression 40911001 52 extrapolation 40911001 53 (ERR-5,0.2,0.3) the fission-fragments absorption in 40911001 54 a layer 40911001 55 Other: 40911001 56 (ERR-6,0.5,1.0) the coincidence statistics 40911001 57 (ERR-7,0.2,0.5) the random coincidences correction 40911001 58 (ERR-8,0.7,1.0) the number of the nuclei in the sample 40911001 59 HISTORY (19861212C) Compiled at the CJD 40911001 60 (20040517A) Date is corrected 40911001 61 (20211201A) M.M. Correction for current rules and 40911001 62 dictionaries. 40911001 63 Subent 004 was deleted according to request of 40911001 64 N.Otsuka (NDS,IAEA), see also REL-REF. 40911001 65 (20240613A) Subent 006 was corrected. 40911001 66 ENDBIB 64 0 40911001 67 NOCOMMON 0 0 40911001 68 ENDSUBENT 67 0 4091100199999 SUBENT 40911002 20240613 421740911002 1 BIB 3 6 40911002 2 REACTION (92-U-235(N,F),,SIG) 40911002 3 FLAG (1.) Table 3, measurement in 4RUSRI 40911002 4 (2.) Table 4, exp. year 1980-1981 40911002 5 STATUS (TABLE,,I.D.Alkhazov+,C,83MOSKVA,2,201,1983) 40911002 6 Tables 3,4 40911002 7 (SPSDD,41013004) Later (1988 year) publication 40911002 8 ENDBIB 6 0 40911002 9 NOCOMMON 0 0 40911002 10 DATA 4 3 40911002 11 EN DATA ERR-T FLAG 40911002 12 MEV B B NO-DIM 40911002 13 2.6 1.214 0.018 2. 40911002 14 8.4 1.801 0.043 2. 40911002 15 14.6 2.086 1. 40911002 16 ENDDATA 5 0 40911002 17 ENDSUBENT 16 0 4091100299999 SUBENT 40911003 20240613 421740911003 1 BIB 4 7 40911003 2 REACTION (92-U-233(N,F),,SIG) 40911003 3 EXP-YEAR (1980) 1980-1981 40911003 4 COMMENT .Measured in 2GERDRE, former 3DDRTUD 40911003 5 STATUS (TABLE,,I.D.Alkhazov+,C,83MOSKVA,2,201,1983) 40911003 6 Table 4. 40911003 7 (COREL,40547011) Previous measurement, publication at 40911003 8 1979 year. 40911003 9 ENDBIB 7 0 40911003 10 NOCOMMON 0 0 40911003 11 DATA 3 1 40911003 12 EN DATA ERR-T 40911003 13 MEV B B 40911003 14 14.7 2.244 0.042 40911003 15 ENDDATA 3 0 40911003 16 ENDSUBENT 15 0 4091100399999 NOSUBENT 40911004 20240613 421740911004 1 SUBENT 40911005 20240613 421740911005 1 BIB 4 9 40911005 2 REACTION (92-U-238(N,F),,SIG) 40911005 3 FLAG (1.) Measured in 2GERDRE, former 3DDRTUD 40911005 4 (2.) Measured at RI 40911005 5 STATUS (TABLE,,V.N.Dushin+,J,SJA,55,656,1983) 40911005 6 Table 2. 40911005 7 I.D.Alkhazov+,C,83MOSKVA,2,201,1983, 40911005 8 Table 3. 40911005 9 (SPSDD,22304007) Final data published at 1991. 40911005 10 HISTORY (20240613A) Data measured at RI were added. 40911005 11 ENDBIB 9 0 40911005 12 NOCOMMON 0 0 40911005 13 DATA 4 2 40911005 14 EN DATA ERR-T FLAG 40911005 15 MEV B B NO-DIM 40911005 16 14.7 1.166 0.021 1. 40911005 17 14.7 1.171 0.024 2. 40911005 18 ENDDATA 4 0 40911005 19 ENDSUBENT 18 0 4091100599999 SUBENT 40911006 20240613 421740911006 1 BIB 4 17 40911006 2 REACTION (93-NP-237(N,F),,SIG) 40911006 3 EXP-YEAR (1980) 1980-1981 40911006 4 STATUS (TABLE,,V.N.Dushin+,J,SJA,55,656,1983) 40911006 5 Table 2. 40911006 6 In I.D.Alkhazov+,C,83MOSKVA,2,201,1983, 40911006 7 Table 4 - 2.210+-0.024 b 40911006 8 (COREL,40552003) Earlier measurement, published at 197740911006 9 year. 40911006 10 HISTORY (20240613A) Data were deleted according to a comment of40911006 11 N.Otsuka (NDS,IAEA): 40911006 12 "2.163+/-0.045 b at 8.4 MeV compiled in 30550.003; 40911006 13 2.210+/-0.024 b at 14.7 MeV (exp.location unclear), 40911006 14 consider to compile 2.214+/-0.040 b at 14.7 MeV in 40911006 15 V.N.Dushin+,J,SJA,55,656,1983, Table 2, somewhere". 40911006 16 Data at 14.7 MeV 2.210+-0.024 (Table 4 of 40911006 17 I.D.Alkhazov+,C,83MOSKVA,2,201,1983) were replaced by 40911006 18 2.214+-0.040 (Table 2, V.N.Dushin+,J,SJA,55,656,1983).40911006 19 ENDBIB 17 0 40911006 20 NOCOMMON 0 0 40911006 21 DATA 3 1 40911006 22 EN DATA ERR-T 40911006 23 MEV B B 40911006 24 14.7 2.214 0.040 40911006 25 ENDDATA 3 0 40911006 26 ENDSUBENT 25 0 4091100699999 SUBENT 40911007 20240613 421740911007 1 BIB 4 7 40911007 2 REACTION (94-PU-239(N,F),,SIG) 40911007 3 EXP-YEAR (1980) 1980-1981 40911007 4 STATUS (TABLE,,I.D.Alkhazov+,C,83MOSKVA,2,201,1983) 40911007 5 Table 4. 40911007 6 (COREL,40547017) Previous measurement, publication at 40911007 7 1979 year. 40911007 8 HISTORY (20211201A) (SPSDD,22304007) was deleted. 40911007 9 ENDBIB 7 0 40911007 10 NOCOMMON 0 0 40911007 11 DATA 3 1 40911007 12 EN DATA ERR-T 40911007 13 MEV B B 40911007 14 14.7 2.309 0.028 40911007 15 ENDDATA 3 0 40911007 16 ENDSUBENT 15 0 4091100799999 SUBENT 40911008 20240613 421740911008 1 BIB 4 9 40911008 2 REACTION (94-PU-242(N,F),,SIG) 40911008 3 EXP-YEAR (1980) 1980-1981 40911008 4 STATUS (TABLE,,I.D.Alkhazov+,C,83MOSKVA,2,201,1983) 40911008 5 Table 4. 40911008 6 (COREL,40547024) Previous measurement, publication at 40911008 7 1979 year. 40911008 8 HISTORY (20240613A) Data 2.143+-0.102 (Table 4 of 40911008 9 I.D.Alkhazov+,C,83MOSKVA,2,201,1983) were replaced by 40911008 10 2.062+-0.036 (Table 2, V.N.Dushin+,J,SJA,55,656,1983).40911008 11 ENDBIB 9 0 40911008 12 NOCOMMON 0 0 40911008 13 DATA 3 1 40911008 14 EN DATA ERR-T 40911008 15 MEV B B 40911008 16 14.7 2.062 0.036 40911008 17 ENDDATA 3 0 40911008 18 ENDSUBENT 17 0 4091100899999 ENDENTRY 8 0 4091199999999