ENTRY 41291 20191109 41844129100000001 SUBENT 41291001 20191109 41844129100100001 BIB 10 43 4129100100002 TITLE Measurements of periods, relative abundances and 4129100100003 absolute total yields of delayed neutrons from fast 4129100100004 neutron induced fission of 235U and 237Np 4129100100005 AUTHOR (V.M.Piksaykin,Yu.F.Balakshev,S.G.Isaev,G.G.Korolev, 4129100100006 N.N.Semenova,A.I.Sergachev,M.Z.Tarasko) 4129100100007 INSTITUTE (4RUSFEI) 4129100100008 REFERENCE (C,97TRIEST,1,485,1997) Main reference,data are given 4129100100009 (J,YK,,(1-2),18,1997) Preliminary results 4129100100010 FACILITY (VDG) Electrostatic accelerator KG-2.5 4129100100011 DETECTOR (D4PI) Boron counter SNM-11 as assemblage of 4129100100012 30 counters distributed in polyethylene moderator - 4129100100013 for neutron detection. Energy dependence of detector 4129100100014 efficiency is calculated by Monte-Carlo method 4129100100015 (SOLST) .Semiconductor surface-barrier detector for 4129100100016 Cf-252 fission events detection 4129100100017 (FISCH) .Fission chamber for Np-237 and U-235 fission 4129100100018 events detection 4129100100019 (PROPC) .He-3 counter for neutron flux monitoring 4129100100020 INC-SOURCE (P-T) 4129100100021 MONITOR (98-CF-252(0,F),PR,NU) 4129100100022 (92-U-235(N,F),DL,NU) 4129100100023 ERR-ANALYS (ERR-T) Total error 4129100100024 (ERR-S) Error due to fission counting statistics of 4129100100025 U-235 and Np-237 4129100100026 (ERR-1) Error due to fission chamber deposit mass of 4129100100027 U-235 and Np-237 4129100100028 (ERR-2) Error due to extrapolation to zero bias for 4129100100029 U-235 and Np-237 4129100100030 (ERR-3) Error due to sample mass of U-235 4129100100031 (ERR-4) Error due to sample mass of Np-237 4129100100032 (ERR-5) Error due to delayed neutron counting 4129100100033 statistical error for U and Np 4129100100034 (ERR-6) Error due to background (two chamber geometry 4129100100035 both for U-235 and Np-237 4129100100036 (ERR-7) Statistical error caused by delayed neutrons 4129100100037 counts to fission fragments counts ratio 4129100100038 (ERR-8) Error due to delayed neutron from impurities 4129100100039 of U-235 4129100100040 HISTORY (19980530C) + + Compiled at the CJD + + 4129100100041 (19990902A) . . Dates corrected and new data added 4129100100042 (20191109U) Ref. of YK was corrected. 4129100100043 Upper -> lower case correction. 4129100100044 BIB information was updated 4129100100045 ENDBIB 43 0 4129100100046 COMMON 9 6 4129100100047 ERR-S ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 4129100100048 ERR-6 ERR-7 ERR-8 4129100100049 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 4129100100050 PER-CENT PER-CENT PER-CENT 4129100100051 0.01 0.7 0.6 1. 0.05 0.01 4129100100052 0.1 0.6 0.06 4129100100053 ENDCOMMON 6 0 4129100100054 ENDSUBENT 53 0 4129100199999 SUBENT 41291002 20191109 41844129100200001 BIB 3 9 4129100200002 REACTION ((92-U-235(N,F),DL/GRP,NU)/ 4129100200003 (92-U-235(N,F),DL,NU)) 4129100200004 SAMPLE .Assembly of 6 metallic disks 1 mm thickness and 4129100200005 5.6 mm diameter, packed in stainless-steel capsule 4129100200006 placed in titanium container. U-235 content is 4129100200007 90 % , U-235 sample weight is 2.4657 gram 4129100200008 STATUS (TABLE) Data from Table 1 of YK,,(1-2),18,1997 4129100200009 (PRELM) Assessed as preliminary by authors 4129100200010 (SPSDD,41291004) Data from 97TRIEST Conf. 4129100200011 ENDBIB 9 0 4129100200012 COMMON 2 3 4129100200013 EN EN-ERR 4129100200014 MEV MEV 4129100200015 1.165 0.021 4129100200016 ENDCOMMON 3 0 4129100200017 DATA 4 6 4129100200018 HL HL-ERR DATA ERR-T 4129100200019 SEC SEC NO-DIM NO-DIM 4129100200020 55.30 0.41 0.040 0.004 4129100200021 22.16 0.21 0.233 0.006 4129100200022 6.59 0.23 0.181 0.007 4129100200023 2.40 0.05 0.422 0.008 4129100200024 0.74 0.04 0.101 0.005 4129100200025 0.163 0.008 0.024 0.001 4129100200026 ENDDATA 8 0 4129100200027 ENDSUBENT 26 0 4129100299999 SUBENT 41291003 20191109 41844129100300001 BIB 3 8 4129100300002 REACTION ((93-NP-237(N,F),DL/GRP,NU)/ 4129100300003 (93-NP-237(N,F),DL,NU)) 4129100300004 SAMPLE .Np-O2 oxide powder, density 7 gram/cm3, packed in 4129100300005 stainless-steel capsule placed in titanium container. 4129100300006 Sample weight is 2.2810 gram 4129100300007 STATUS (TABLE) Data from Table 2 of YK,,(1-2),18,1997 4129100300008 (PRELM) Assessed as preliminary by authors 4129100300009 (SPSDD,41291005) Data from 97TRIEST Conf. 4129100300010 ENDBIB 8 0 4129100300011 COMMON 2 3 4129100300012 EN EN-ERR 4129100300013 MEV MEV 4129100300014 1.154 0.025 4129100300015 ENDCOMMON 3 0 4129100300016 DATA 4 6 4129100300017 HL HL-ERR DATA ERR-T 4129100300018 SEC SEC NO-DIM NO-DIM 4129100300019 55.18 0.49 0.032 0.003 4129100300020 22.71 0.18 0.257 0.007 4129100300021 5.65 0.20 0.205 0.008 4129100300022 2.14 0.07 0.395 0.009 4129100300023 0.436 0.021 0.095 0.005 4129100300024 0.196 0.010 0.0159 0.0008 4129100300025 ENDDATA 8 0 4129100300026 ENDSUBENT 25 0 4129100399999 SUBENT 41291004 20191109 41844129100400001 BIB 4 12 4129100400002 REACTION ((92-U-235(N,F),DL/GRP,NU)/ 4129100400003 (92-U-235(N,F),DL,NU)) 4129100400004 SAMPLE .Assembly of 6 metallic disks 1 mm thickness and 4129100400005 5.6 mm diameter, packed in stainless-steel capsule 4129100400006 placed in titanium container. U-235 content is 4129100400007 90 % , U-235 sample weight is 2.4657 gram 4129100400008 REL-REF (A,13700006,G.R.Keepin+,J,PR,107,1044,1957) 4129100400009 Mentioned as from G.R.Keepin, Physics of Nuclear 4129100400010 Kinetics, Addison Wesley Publ. Co, Reading, 4129100400011 Massachusetts, 1965 4129100400012 (A,,C.B.Besant+,J,BNE,16,(2),161,1977) 4129100400013 STATUS (TABLE) Data taken from Table 1 of 97TRIEST Conf. 4129100400014 ENDBIB 12 0 4129100400015 COMMON 2 3 4129100400016 EN EN-ERR 4129100400017 MEV MEV 4129100400018 1.165 0.021 4129100400019 ENDCOMMON 3 0 4129100400020 DATA 4 6 4129100400021 HL HL-ERR DATA ERR-T 4129100400022 SEC SEC NO-DIM NO-DIM 4129100400023 55.30 0.82 0.037 0.002 4129100400024 21.88 0.41 0.226 0.006 4129100400025 6.14 0.43 0.187 0.015 4129100400026 2.35 0.09 0.398 0.0017 4129100400027 0.628 0.041 0.126 0.008 4129100400028 0.174 0.009 0.025 0.001 4129100400029 ENDDATA 8 0 4129100400030 ENDSUBENT 29 0 4129100499999 SUBENT 41291005 20191109 41844129100500001 BIB 4 11 4129100500002 REACTION ((93-NP-237(N,F),DL/GRP,NU)/ 4129100500003 (93-NP-237(N,F),DL,NU)) 4129100500004 SAMPLE .Np-O2 oxide powder, density 7 gram/cm3, packed in 4129100500005 stainless-steel capsule placed in titanium container. 4129100500006 Sample weight is 2.2810 gram 4129100500007 REL-REF (A,,G.Benedetti+,J,NSE,80,379,1982) 4129100500008 (A,,M.C.Brady+,J,NSE,103,129,1989) 4129100500009 (A,,G.Rudstam,J,NSE,80,238,1982) 4129100500010 (A,41026004,A.N.Gudkov+,J,AE,66,100,1989) 4129100500011 (A,,R.W.Waldo+,J,ANS,39,879,1981) 4129100500012 STATUS (TABLE) Data from Table 2 of 97TRIEST Conf. 4129100500013 ENDBIB 11 0 4129100500014 COMMON 2 3 4129100500015 EN EN-ERR 4129100500016 MEV MEV 4129100500017 1.154 0.025 4129100500018 ENDCOMMON 3 0 4129100500019 DATA 4 6 4129100500020 HL HL-ERR DATA ERR-T 4129100500021 SEC SEC NO-DIM NO-DIM 4129100500022 55.32 0.94 0.031 0.001 4129100500023 22.71 0.24 0.246 0.007 4129100500024 6.53 0.20 0.167 0.007 4129100500025 2.37 0.060 0.397 0.009 4129100500026 0.483 0.027 0.144 0.007 4129100500027 0.202 0.010 0.016 0.001 4129100500028 ENDDATA 8 0 4129100500029 ENDSUBENT 28 0 4129100599999 SUBENT 41291006 20191109 41844129100600001 BIB 4 12 4129100600002 REACTION (92-U-235(N,F),DL,NU) 4129100600003 REL-REF (A,13700022,G.R.Keepin+,J,PR,107,1044,1957) 4129100600004 Mentioned as from G.R.Keepin, Physics of Nuclear 4129100600005 Kinetics, Addison Wesley Publ. Co, Reading, 4129100600006 Massachusetts, 1965 4129100600007 0.0164+-0.0005 n/fis (0.0165+-0.005 in Subent 022) 4129100600008 (A,,C.B.Besant+,J,BNE,16,(2),161,1977) 4129100600009 0.0164+-0.0006 n/fis 4129100600010 (A,,R.J.Tuttle,J,NSE,56,37,1975) 4129100600011 0.0171+-0.00022 n/fis 4129100600012 STATUS (TABLE) Table 3 of 97TRIEST Conf. 4129100600013 HISTORY (20191109U) PART/FIS -> PRT/FIS 4129100600014 ENDBIB 12 0 4129100600015 COMMON 2 3 4129100600016 EN EN-ERR 4129100600017 MEV MEV 4129100600018 1.165 0.021 4129100600019 ENDCOMMON 3 0 4129100600020 DATA 2 1 4129100600021 DATA ERR-T 4129100600022 PRT/FIS PRT/FIS 4129100600023 1.709E-02 8.2 E-04 4129100600024 ENDDATA 3 0 4129100600025 ENDSUBENT 24 0 4129100699999 SUBENT 41291007 20191109 41844129100700001 BIB 4 9 4129100700002 REACTION (93-NP-237(N,F),DL,NU) 4129100700003 REL-REF (A,,G.Benedetti+,J,NSE,80,379,1982) 4129100700004 0.0122+-0.0003 n/fis 4129100700005 (A,41026001,A.N.Gudkov+,J,AE,66,100,1989) 4129100700006 0.01142+-0.0016 n/fis 4129100700007 (A,,R.W.Waldo+,J,ANS,39,879,1981) 4129100700008 0.01068+-0.00098 n/fis 4129100700009 STATUS (TABLE) Table 4 of 97TRIEST Conf. 4129100700010 HISTORY (20191109U) PART/FIS -> PRT/FIS 4129100700011 ENDBIB 9 0 4129100700012 COMMON 2 3 4129100700013 EN EN-ERR 4129100700014 MEV MEV 4129100700015 1.154 0.025 4129100700016 ENDCOMMON 3 0 4129100700017 DATA 2 1 4129100700018 DATA ERR-T 4129100700019 PRT/FIS PRT/FIS 4129100700020 1.2120E-02 5.7000E-04 4129100700021 ENDDATA 3 0 4129100700022 ENDSUBENT 21 0 4129100799999 ENDENTRY 7 0 4129199999999