ENTRY 40808 20130816 41614080800000001 SUBENT 40808001 20130816 41614080800100001 BIB 9 30 4080800100002 INSTITUTE (4RUSFEI) 4080800100003 REFERENCE (J,AE,19,(1),41,196507) 4080800100004 (J,SJA,19,903,196507)Engl.transl.of J,AE,19,(1),41,19654080800100005 #doi:10.1007/BF01125377 4080800100006 (J,JNE/AB,20,600,196607) 4080800100007 AUTHOR (A.A.Van'kov,Yu.Ya.Stavisskii) 4080800100008 TITLE Measurement of the mean number of fission neutrons 4080800100009 emitted by U235 and Pu239 on the capture of a single 4080800100010 24 keV neutron. 4080800100011 INC-SOURCE (PHOTO) Sb-Be neutron source 4080800100012 METHOD Method of the slowing-down lengths difference in D2O 4080800100013 DETECTOR (FISCH) 4080800100014 CORRECTION For isotope U-238 in U-235 admixture (10%), 4080800100015 For satellite group of photo-neutrons of 380 keV (4%),4080800100016 For absorbtion in source material, 4080800100017 For difference of fission neutron spectra of U-235 4080800100018 and Pu-239. 4080800100019 Effect of inelastic scattering in sample, thermal 4080800100020 neutrons depression in water tank, effect of collimator4080800100021 were found negligible on the base of test measurements 4080800100022 and calculated estimations. 4080800100023 HISTORY (19840914T) Converted From ENTRY 80265 4080800100024 (20050827U) Correction according to Memo CP-E/70, 4080800100025 dates were corrected 4080800100026 (20070420A) Page of 2nd Reference was corrected. M.M. 4080800100027 Subents .005-.007 and BIB Information were added. 4080800100028 (20130816A) Subents 004,007 reactions were corrected: 4080800100029 ABS -> NON according to memo CP-D/798 (N.Otsuka,NDS, 4080800100030 IAEA). 4080800100031 BIB information was updated. 4080800100032 ENDBIB 30 0 4080800100033 NOCOMMON 0 0 4080800100034 ENDSUBENT 33 0 4080800199999 SUBENT 40808002 20130816 41614080800200001 BIB 4 8 4080800200002 REACTION (94-PU-239(N,ABS),,SIG) 4080800200003 SAMPLE Hollow metallic sphere, diameters 30 (inner) and 50 mm4080800200004 (external). 4080800200005 HISTORY (20130816A) REACTION was corrected: 4080800200006 (94-PU-239(N,G)94-PU-240,,SIG)+(94-PU-239(N,F),,SIG) 4080800200007 -> (94-PU-239(N,ABS),,SIG) 4080800200008 according to comment of N.Otsuka (NDS,IAEA). 4080800200009 STATUS (TABLE) Table of J,AE,19,(1),41,1965 . 4080800200010 ENDBIB 8 0 4080800200011 NOCOMMON 0 0 4080800200012 DATA 3 1 4080800200013 EN DATA DATA-ERR 4080800200014 MEV B B 4080800200015 2.4000E-02 2.7500E+00 1.6000E-01 4080800200016 ENDDATA 3 0 4080800200017 ENDSUBENT 16 0 4080800299999 SUBENT 40808003 20130816 41614080800300001 BIB 3 4 4080800300002 REACTION (94-PU-239(N,ABS),,ALF) 4080800300003 SAMPLE Hollow Metallic Sphere, Diameters 50 (inner) And 30 mm4080800300004 (external) 4080800300005 STATUS (TABLE) Table of J,AE,19,(1),41,1965 . 4080800300006 ENDBIB 4 0 4080800300007 NOCOMMON 0 0 4080800300008 DATA 3 1 4080800300009 EN DATA DATA-ERR 4080800300010 MEV NO-DIM NO-DIM 4080800300011 2.4000E-02 3.4900E-01 4.0000E-02 4080800300012 ENDDATA 3 0 4080800300013 ENDSUBENT 12 0 4080800399999 SUBENT 40808004 20130816 41614080800400001 BIB 3 5 4080800400002 REACTION (94-PU-239(N,NON),,ETA) 4080800400003 Number of secondary fission neutrons per one absorbtion4080800400004 event. 4080800400005 SAMPLE Hollow Sphere 4080800400006 STATUS (TABLE) Table of J,AE,19,(1),41,1965 . 4080800400007 ENDBIB 5 0 4080800400008 NOCOMMON 0 0 4080800400009 DATA 3 1 4080800400010 EN DATA DATA-ERR 4080800400011 MEV PRT/REAC PRT/REAC 4080800400012 2.4000E-02 2.1500E+00 6.0000E-02 4080800400013 ENDDATA 3 0 4080800400014 ENDSUBENT 13 0 4080800499999 SUBENT 40808005 20130816 41614080800500001 BIB 4 8 4080800500002 REACTION (92-U-235(N,ABS),,SIG) 4080800500003 SAMPLE Hollow Metallic Sphere, Diameters 30 (Inner) And 50 mm4080800500004 (external). 4080800500005 STATUS (TABLE) Table of J,AE,19,(1),41,1965 . 4080800500006 HISTORY (20130816A) REACTION was corrected: 4080800500007 (92-U-235(N,G)92-U-236,,SIG)+(92-U-235(N,F),,SIG) 4080800500008 -> (92-U-235(N,ABS),,SIG) 4080800500009 according to comment of N.Otsuka (NDS,IAEA). 4080800500010 ENDBIB 8 0 4080800500011 NOCOMMON 0 0 4080800500012 DATA 3 1 4080800500013 EN DATA DATA-ERR 4080800500014 KEV B B 4080800500015 24. 2.95 0.17 4080800500016 ENDDATA 3 0 4080800500017 ENDSUBENT 16 0 4080800599999 SUBENT 40808006 20130816 41614080800600001 BIB 3 4 4080800600002 REACTION (92-U-235(N,ABS),,ALF) 4080800600003 SAMPLE Hollow Metallic Sphere, Diameters 50 (inner) And 30 mm4080800600004 (external) 4080800600005 STATUS (TABLE) Table of J,AE,19,(1),41,1965 . 4080800600006 ENDBIB 4 0 4080800600007 NOCOMMON 0 0 4080800600008 DATA 3 1 4080800600009 EN DATA DATA-ERR 4080800600010 KEV NO-DIM NO-DIM 4080800600011 24. 0.352 0.040 4080800600012 ENDDATA 3 0 4080800600013 ENDSUBENT 12 0 4080800699999 SUBENT 40808007 20130816 41614080800700001 BIB 3 5 4080800700002 REACTION (92-U-235(N,NON),,ETA) 4080800700003 Number of secondary fission neutrons per one absorbtion4080800700004 event. 4080800700005 SAMPLE Hollow Sphere 4080800700006 STATUS (TABLE) Table of J,AE,19,(1),41,1965 . 4080800700007 ENDBIB 5 0 4080800700008 NOCOMMON 0 0 4080800700009 DATA 3 1 4080800700010 EN DATA DATA-ERR 4080800700011 MEV PRT/REAC PRT/REAC 4080800700012 24. 1.79 0.06 4080800700013 ENDDATA 3 0 4080800700014 ENDSUBENT 13 0 4080800799999 ENDENTRY 7 0 4080899999999