ENTRY 40033 20120321 41564003300000001 SUBENT 40033001 20120321 41564003300100001 BIB 11 35 4003300100002 INSTITUTE (4RUSFEI) 4003300100003 REFERENCE (C,70HELSINKI,2,167,197006) Preprint IAEA-CN-26/74 4003300100004 (J,AE,30,(3),250,1971) U-235 data. 4003300100005 First author L.I.Prokhorova. 4003300100006 (J,SJA,30,(3),307,1971) Engl.translation of J,AE,30 . 4003300100007 #doi:10.1007/BF01164668 4003300100008 AUTHOR (V.G.Nesterov, B.Nurpeisov, L.I.Prokhorova, 4003300100009 G.N.Smirenkin, Yu.M.Turchin,I.I.Kotukhov) 4003300100010 TITLE Average number of prompt neutrons in the fission of 4003300100011 Uranium-235 and Plutonium-239 by neutrons. 4003300100012 FACILITY (VDG,4RUSFEI) Van De Graaff 4003300100013 INC-SOURCE (P-T,P-LI7)Proton-tritium and proton-lithium-7 4003300100014 reactions 4003300100015 SAMPLE 92-U-235, 90 percent enriched . 4003300100016 94-Pu-239 with admixture of 92-Pu-240 4003300100017 equal to 1.8 per-cent. 4003300100018 Layers of U3O8 and PuO2 on both sides of Al foils. 4003300100019 Total U-235 amount - 200 mg, Pu-239 - 100 mg. 4003300100020 Cf-252 layer of 500 fis/min in the center as monitor. 4003300100021 METHOD (COINC) Coincidence between impulses from detectors 4003300100022 of neutrons and fission fragments 4003300100023 DETECTOR (FISCH) Fission chamber for fragments detection 4003300100024 (HE3SP) 24 proportional counters with He3 in paraffin 4003300100025 block for neutrons detection . 4003300100026 Neutron registration efficiency 21 %. 4003300100027 PART-DET (FF) Fission fragments 4003300100028 (N) Neutrons. 4003300100029 HISTORY (19700826C) 4003300100030 (20021011A) Corrected in CJD after Varlamov's comment 4003300100031 (20021011A) Date is corrected 4003300100032 (20111020A) M.M. Reference coding was corrected, 4003300100033 page number was added. BIB information was added. 4003300100034 Subents 004 -009 were added . 4003300100035 (20120321A) Misprint in EN units was corrected in 4003300100036 Subents 006-009. 4003300100037 ENDBIB 35 0 4003300100038 NOCOMMON 0 0 4003300100039 ENDSUBENT 38 0 4003300199999 SUBENT 40033002 20111028 41544003300200001 BIB 5 19 4003300200002 REACTION (92-U-235(N,F),PR,NU) 4003300200003 MONITOR (98-CF-252(0,F),PR,NU) 4003300200004 Average number of prompt neutrons 4003300200005 of 98-Cf-252 spontaneous fission 4003300200006 CORRECTION For registration efficiency dependence from place of 4003300200007 neutron source. 4003300200008 For energy dependence and angular anisotropy of 4003300200009 detector efficiency. 4003300200010 For discrimination of part of fission events. 4003300200011 For pulses loses at coincidence registration. 4003300200012 For background due to admixtures in samples and 4003300200013 and fission by scattered neutrons. 4003300200014 ERR-ANALYS (DATA-ERR) Error includes statistical error (difference4003300200015 between separate series of measurements) and 4003300200016 (ERR-1,0.4,0.5) error of corrections coefficient. 4003300200017 Uncertainty of monitor was not included. 4003300200018 STATUS (TABLE) Table 1 of C,70HELSINKI,2,167,1970 . 4003300200019 Table 1 of J,AE,30,(3),250,1971. 4003300200020 (DEP,40033004) Derived from primarily measure ratio. 4003300200021 ENDBIB 19 0 4003300200022 COMMON 1 3 4003300200023 MONIT 4003300200024 PRT/FIS 4003300200025 3.782 4003300200026 ENDCOMMON 3 0 4003300200027 DATA 4 12 4003300200028 EN EN-ERR DATA DATA-ERR 4003300200029 MEV MEV PRT/FIS PRT/FIS 4003300200030 8.0000E-02 2.4040E+00 1.4000E-02 4003300200031 2.1400E-01 4.0000E-02 2.4670E+00 2.0000E-02 4003300200032 3.2200E-01 4.3000E-02 2.4570E+00 2.0000E-02 4003300200033 4.0800E-01 4.2000E-02 2.4740E+00 2.4000E-02 4003300200034 5.1000E-01 3.9000E-02 2.4840E+00 2.7000E-02 4003300200035 6.8600E-01 3.9000E-02 2.4520E+00 2.5000E-02 4003300200036 8.1000E-01 3.8000E-02 2.5140E+00 2.0000E-02 4003300200037 9.1000E-01 3.7000E-02 2.5180E+00 2.6000E-02 4003300200038 1.0020E+00 6.2000E-02 2.5580E+00 2.5000E-02 4003300200039 1.1120E+00 3.5000E-02 2.5780E+00 2.2000E-02 4003300200040 1.3140E+00 3.5000E-02 2.5740E+00 2.4000E-02 4003300200041 1.5150E+00 3.5000E-02 2.5720E+00 2.5000E-02 4003300200042 ENDDATA 14 0 4003300200043 ENDSUBENT 42 0 4003300299999 SUBENT 40033003 20111028 41544003300300001 BIB 5 18 4003300300002 REACTION (94-PU-239(N,F),PR,NU) 4003300300003 MONITOR (98-CF-252(0,F),PR,NU) 4003300300004 Average number of prompt neutrons 4003300300005 of 98-Cf-252 spontaneous fission 4003300300006 CORRECTION For registration efficiency dependence from place of 4003300300007 neutron source. 4003300300008 For energy dependence and angular anisotropy of 4003300300009 detector efficiency. 4003300300010 For discrimination of part of fission events. 4003300300011 For pulses loses at coincidence registration. 4003300300012 For background due to admixtures in samples and 4003300300013 and fission by scattered neutrons. 4003300300014 ERR-ANALYS (DATA-ERR) Error includes statistical error (difference4003300300015 between separate series of measurements) and 4003300300016 (ERR-1,0.4,0.5) error of corrections coefficient. 4003300300017 Uncertainty of monitor was not included. 4003300300018 STATUS (TABLE) Table 1 of C,70HELSINKI,2,167,1970 . 4003300300019 (DEP,40033005) 4003300300020 ENDBIB 18 0 4003300300021 COMMON 1 3 4003300300022 MONIT 4003300300023 PRT/FIS 4003300300024 3.782 4003300300025 ENDCOMMON 3 0 4003300300026 DATA 4 8 4003300300027 EN EN-ERR DATA DATA-ERR 4003300300028 MEV MEV PRT/FIS PRT/FIS 4003300300029 4.0000E-01 5.1000E-02 2.9040E+00 3.1000E-02 4003300300030 6.7700E-01 4.8000E-02 2.8710E+00 3.5000E-02 4003300300031 9.0200E-01 4.5000E-02 2.8820E+00 3.7000E-02 4003300300032 1.1030E+00 4.5000E-02 2.9260E+00 4.3000E-02 4003300300033 1.3060E+00 4.3000E-02 3.0340E+00 3.9000E-02 4003300300034 1.4040E+00 4.3000E-02 3.1150E+00 4.0000E-02 4003300300035 1.4830E+00 4.2000E-02 3.1280E+00 3.9000E-02 4003300300036 1.6070E+00 4.2000E-02 3.1380E+00 5.5000E-02 4003300300037 ENDDATA 10 0 4003300300038 ENDSUBENT 37 0 4003300399999 SUBENT 40033004 20111028 41544003300400001 BIB 6 15 4003300400002 REACTION ((92-U-235(N,F),PR,NU)/(98-CF-252(0,F),PR,NU)) 4003300400003 Primarily measured ratio after corrections. 4003300400004 ERR-ANALYS (DATA-ERR) Probably statistical only. 4003300400005 MISC-COL (MISC) Primarily measured ratio before corrections. 4003300400006 CORRECTION For registration efficiency dependence from place of 4003300400007 neutron source. 4003300400008 For energy dependence and angular anisotropy of 4003300400009 detector efficiency. 4003300400010 For discrimination of part of fission events. 4003300400011 For pulses loses at coincidence registration. 4003300400012 For background due to admixtures in samples and 4003300400013 fission by scattered neutrons. 4003300400014 STATUS (TABLE) Table 1 of C,70HELSINKI,2,167,1970 . 4003300400015 Table 1 of J,AE,30,(3),250,1971. 4003300400016 HISTORY (20111028C) M.M. 4003300400017 ENDBIB 15 0 4003300400018 NOCOMMON 0 0 4003300400019 DATA 6 12 4003300400020 EN EN-ERR DATA DATA-ERR MISC MISC-ERR 4003300400021 MEV MEV NO-DIM NO-DIM NO-DIM NO-DIM 4003300400022 8.0000E-02 0.6358 0.0102 0.6426 0.0100 4003300400023 2.1400E-01 4.0000E-02 0.6524 0.0052 0.6566 0.0047 4003300400024 3.2200E-01 4.3000E-02 0.6498 0.0054 0.6540 0.0048 4003300400025 4.0800E-01 4.2000E-02 0.6543 0.0063 0.6580 0.0052 4003300400026 5.1000E-01 3.9000E-02 0.6569 0.0071 0.6602 0.0067 4003300400027 6.8600E-01 3.9000E-02 0.6484 0.0067 0.6519 0.0063 4003300400028 8.1000E-01 3.8000E-02 0.6648 0.0054 0.6663 0.0048 4003300400029 9.1000E-01 3.7000E-02 0.6659 0.0069 0.6670 0.0064 4003300400030 1.0020E+00 6.2000E-02 0.6764 0.0066 0.6797 0.0060 4003300400031 1.1120E+00 3.5000E-02 0.6816 0.0060 0.6814 0.0054 4003300400032 1.3140E+00 3.5000E-02 0.6806 0.0063 0.6797 0.0057 4003300400033 1.5150E+00 3.5000E-02 0.6801 0.0067 0.6764 0.0062 4003300400034 ENDDATA 14 0 4003300400035 ENDSUBENT 34 0 4003300499999 SUBENT 40033005 20111028 41544003300500001 BIB 4 5 4003300500002 REACTION ((94-PU-239(N,F),PR,NU)/(98-CF-252(0,F),PR,NU)) 4003300500003 Primarily measured ratio before correction. 4003300500004 ERR-ANALYS (DATA-ERR) Probably statistical only. 4003300500005 STATUS (TABLE) Table 1 of C,70HELSINKI,2,167,1970 . 4003300500006 HISTORY (20111028C) M.M. 4003300500007 ENDBIB 5 0 4003300500008 NOCOMMON 0 0 4003300500009 DATA 4 8 4003300500010 EN EN-ERR DATA DATA-ERR 4003300500011 MEV MEV NO-DIM NO-DIM 4003300500012 4.0000E-01 5.1000E-02 0.7624 0.0065 4003300500013 6.7700E-01 4.8000E-02 0.7538 0.0081 4003300500014 9.0200E-01 4.5000E-02 0.7561 0.0087 4003300500015 1.1030E+00 4.5000E-02 0.7668 0.0109 4003300500016 1.3060E+00 4.3000E-02 0.7931 0.0076 4003300500017 1.4040E+00 4.3000E-02 0.8166 0.0100 4003300500018 1.4830E+00 4.2000E-02 0.8144 0.0095 4003300500019 1.6070E+00 4.2000E-02 0.8169 0.0116 4003300500020 ENDDATA 10 0 4003300500021 ENDSUBENT 20 0 4003300599999 SUBENT 40033006 20120321 41564003300600001 BIB 9 25 4003300600002 REACTION (92-U-235(N,F),PR,NU) 4003300600003 MONITOR (98-CF-252(0,F),PR,NU) 4003300600004 Average number of prompt neutrons 4003300600005 of 98-Cf-252 spontaneous fission 4003300600006 INC-SOURCE Fast neutrons of 0.3MeV energy were slowing down in 4003300600007 paraffin block. 4003300600008 INC-SPECT Cadmium ratio about 15. 4003300600009 COMMENT EN=0.0253 eV energy was supposed by compiler. 4003300600010 Data in Table 1 of the article are given as for 4003300600011 EN=0. M.M. 4003300600012 CORRECTION For registration efficiency dependence from place of 4003300600013 neutron source. 4003300600014 For energy dependence and angular anisotropy of 4003300600015 detector efficiency. 4003300600016 For discrimination of part of fission events. 4003300600017 For pulses loses at coincidence registration. 4003300600018 For background due to admixtures in samples and 4003300600019 and fission by scattered neutrons. 4003300600020 ERR-ANALYS (DATA-ERR) Error includes statistical error (difference4003300600021 between separate series of measurements) and 4003300600022 (ERR-1,0.4,0.5) error of corrections coefficient. 4003300600023 Uncertainty of monitor was not included. 4003300600024 STATUS (TABLE) Table 1 of C,70HELSINKI,2,167,1970 . 4003300600025 (DEP,40033008) 4003300600026 HISTORY (20111028C) M.M. 4003300600027 ENDBIB 25 0 4003300600028 COMMON 1 3 4003300600029 MONIT 4003300600030 PRT/FIS 4003300600031 3.782 4003300600032 ENDCOMMON 3 0 4003300600033 DATA 3 1 4003300600034 EN-DUMMY DATA DATA-ERR 4003300600035 EV PRT/FIS PRT/FIS 4003300600036 0.0253 2.412 0.014 4003300600037 ENDDATA 3 0 4003300600038 ENDSUBENT 37 0 4003300699999 SUBENT 40033007 20120321 41564003300700001 BIB 9 25 4003300700002 REACTION (94-PU-239(N,F),PR,NU) 4003300700003 MONITOR (98-CF-252(0,F),PR,NU) 4003300700004 Average number of prompt neutrons 4003300700005 of 98-Cf-252 spontaneous fission 4003300700006 INC-SOURCE Fast neutrons of 0.3MeV energy were slowing down in 4003300700007 paraffin block. 4003300700008 INC-SPECT Cadmium ratio about 15. 4003300700009 COMMENT EN=0.0253 eV energy was supposed by compiler. 4003300700010 Data in Table 1 of the article are given as for 4003300700011 EN=0. M.M. 4003300700012 CORRECTION For registration efficiency dependence from place of 4003300700013 neutron source. 4003300700014 For energy dependence and angular anisotropy of 4003300700015 detector efficiency. 4003300700016 For discrimination of part of fission events. 4003300700017 For pulses loses at coincidence registration. 4003300700018 For background due to admixtures in samples and 4003300700019 and fission by scattered neutrons. 4003300700020 ERR-ANALYS (DATA-ERR) Error includes statistical error (difference4003300700021 between separate series of measurements) and 4003300700022 (ERR-1,0.4,0.5) error of corrections coefficient. 4003300700023 Uncertainty of monitor was not included. 4003300700024 STATUS (TABLE) Table 1 of C,70HELSINKI,2,167,1970 . 4003300700025 (DEP,40033009) 4003300700026 HISTORY (20111028C) M.M. 4003300700027 ENDBIB 25 0 4003300700028 COMMON 1 3 4003300700029 MONIT 4003300700030 PRT/FIS 4003300700031 3.782 4003300700032 ENDCOMMON 3 0 4003300700033 DATA 3 1 4003300700034 EN-DUMMY DATA DATA-ERR 4003300700035 EV PRT/FIS PRT/FIS 4003300700036 0.0253 2.872 0.025 4003300700037 ENDDATA 3 0 4003300700038 ENDSUBENT 37 0 4003300799999 SUBENT 40033008 20120321 41564003300800001 BIB 9 20 4003300800002 REACTION ((92-U-235(N,F),PR,NU)/(98-CF-252(0,F),PR,NU)) 4003300800003 Primarily measured ratio after corrections. 4003300800004 INC-SOURCE Fast neutrons of 0.3MeV energy were slowing down in 4003300800005 paraffin block. 4003300800006 INC-SPECT Cadmium ratio about 15. 4003300800007 MISC-COL (MISC) Primarily measured ratio before corrections. 4003300800008 CORRECTION For registration efficiency dependence from place of 4003300800009 neutron source. 4003300800010 For energy dependence and angular anisotropy of 4003300800011 detector efficiency. 4003300800012 For discrimination of part of fission events. 4003300800013 For pulses loses at coincidence registration. 4003300800014 For background due to admixtures in samples and 4003300800015 fission by scattered neutrons. 4003300800016 COMMENT EN=0.0253 eV energy was supposed by compiler. 4003300800017 Data in Table 1 of the article are given as for 4003300800018 EN=0. M.M. 4003300800019 ERR-ANALYS (DATA-ERR) Probably statistical only. 4003300800020 STATUS (TABLE) Table 1 of C,70HELSINKI,2,167,1970 . 4003300800021 HISTORY (20111028C) M.M. 4003300800022 ENDBIB 20 0 4003300800023 NOCOMMON 0 0 4003300800024 DATA 5 1 4003300800025 EN-DUMMY DATA DATA-ERR MISC MISC-ERR 4003300800026 EV NO-DIM NO-DIM NO-DIM NO-DIM 4003300800027 0.0253 0.6379 0.0037 0.6438 0.0028 4003300800028 ENDDATA 3 0 4003300800029 ENDSUBENT 28 0 4003300899999 SUBENT 40033009 20120321 41564003300900001 BIB 8 19 4003300900002 REACTION ((94-PU-239(N,F),PR,NU)/(98-CF-252(0,F),PR,NU)) 4003300900003 Primarily measured ratio before corrections. 4003300900004 INC-SOURCE Fast neutrons of 0.3MeV energy were slowing down in 4003300900005 paraffin block. 4003300900006 INC-SPECT Cadmium ratio about 15. 4003300900007 CORRECTION For registration efficiency dependence from place of 4003300900008 neutron source. 4003300900009 For energy dependence and angular anisotropy of 4003300900010 detector efficiency. 4003300900011 For discrimination of part of fission events. 4003300900012 For pulses loses at coincidence registration. 4003300900013 For background due to admixtures in samples and 4003300900014 fission by scattered neutrons. 4003300900015 COMMENT EN=0.0253 eV energy was supposed by compiler. 4003300900016 Data in Table 1 of the article are given as for 4003300900017 EN=0. M.M. 4003300900018 ERR-ANALYS (DATA-ERR) Probably statistical only. 4003300900019 STATUS (TABLE) Table 1 of C,70HELSINKI,2,167,1970 . 4003300900020 HISTORY (20111028C) M.M. 4003300900021 ENDBIB 19 0 4003300900022 NOCOMMON 0 0 4003300900023 DATA 3 1 4003300900024 EN-DUMMY DATA DATA-ERR 4003300900025 EV NO-DIM NO-DIM 4003300900026 0.0253 0.7561 0.0050 4003300900027 ENDDATA 3 0 4003300900028 ENDSUBENT 27 0 4003300999999 ENDENTRY 9 0 4003399999999