ENTRY 40345 20191121 41854034500000001 SUBENT 40345001 20191121 41854034500100001 BIB 8 22 4034500100002 TITLE Measurement of the 238U to 235U fission cross-section 4034500100003 ratio in the 1.4 - 7.4 MeV neutron energy range 4034500100004 AUTHOR (B.I.Fursov,V.M.Kupriyanov,B.K.Maslennikov, 4034500100005 G.N.Smirenkin,V.M.Surin) 4034500100006 Misprint: V.M.Surmi -> V.M.Surin in INDC(CCP)-48,4,19754034500100007 INSTITUTE (4RUSFEI) 4034500100008 REFERENCE (C,73KIEV,4,3,1973) Data are given 4034500100009 (R,YFI-17,7,1973) The same 4034500100010 (R,INDC(CCP)-48,4,1975) Engl.transl.YFI-17,7,1973 4034500100011 INC-SOURCE (P-T) Proton-tritium 4034500100012 (D-D) Deuteron-deuterium 4034500100013 FACILITY (VDG,4RUSFEI) Van-de-Graaff 4034500100014 DETECTOR (IOCH) Ionization chamber 4034500100015 HISTORY (19760220C) Compiled at the centre 4034500100016 (19871031U) One author name (Cuprijanov to Kuprijanov)4034500100017 changed, some keywords corrected and 4034500100018 ISO-QUANT into REACTION converted 4034500100019 (20191121A) Ref. INDC(CCP)-48 was added. 4034500100020 Upper -> lower case correction. 4034500100021 Dates were corrected for 4-digits year. 4034500100022 ERR-ANALYS was moved in Subent 002 4034500100023 and corrected as in C,73KIEV,4,3,1973 4034500100024 ENDBIB 22 0 4034500100025 NOCOMMON 0 0 4034500100026 ENDSUBENT 25 0 4034500199999 SUBENT 40345002 20191121 41854034500200001 BIB 6 29 4034500200002 REACTION ((92-U-238(N,F),,SIG)/(92-U-235(N,F),,SIG)) 4034500200003 SAMPLE U-238 : U-238 - 99.2723%, U-235 - 0.7223%, 4034500200004 U-234 - 0.0054% . 4034500200005 U-235 : U-235 - 91.23%, U-238 - 7.66%, u-234 - 1.10%. 4034500200006 Layers thickness 0.5 mg/cm2 . 4034500200007 CORRECTION Experimental hall background - 0.1-0.7 % 4034500200008 Background from neutrons scattered in the sample 4034500200009 holder - 0.2-2.6 % 4034500200010 Background of neutrons from other reactions - 0.2-7.% 4034500200011 Admixture of other isotopes - 2.3-6.% 4034500200012 Fission fragments absorption in layers - 1.25-2.% 4034500200013 ERR-ANALYS (DATA-ERR) Data-errors were consist of 4034500200014 statistical error and errors of corrections. 4034500200015 (ERR-1) Normalization error 1.65% , not included in 4034500200016 DATA-ERR; mainly due to ratio of atoms numbers U238/U24034500200017 (ERR-S,0.4,1.0) Statistical error 4034500200018 (ERR-2,,0.1) Experimental hall background 4034500200019 (ERR-3,0.1,0.3) Background from neutrons scattered in 4034500200020 the sample holder 4034500200021 (ERR-4,0.1,0.8) Background of neutrons from other 4034500200022 reactions 4034500200023 (ERR-5,0.2,0.4) Admixture of other isotopes 4034500200024 (ERR-6,0.1,0.3) Fission fragments absorption in layers 4034500200025 STATUS (TABLE) Table 1 of rep.INDC(CCP)-48,p.4,1975 4034500200026 = Table 2 of Conf.Proc.73KIEV,v.4,p.3,1973 4034500200027 (SPSDD,40506002) Data for En 0.981 - 7.0 MeV 4034500200028 HISTORY (20191121A) Code SPSDD was added in STATUS. 4034500200029 DATA-ERR values were added for EN=3.1-7.4 MeV 4034500200030 from Table of INDC(CCP)-48 4034500200031 ENDBIB 29 0 4034500200032 COMMON 1 3 4034500200033 ERR-1 4034500200034 PER-CENT 4034500200035 1.65 4034500200036 ENDCOMMON 3 0 4034500200037 DATA 4 41 4034500200038 EN EN-ERR DATA DATA-ERR 4034500200039 MEV KEV NO-DIM PER-CENT 4034500200040 1.4 60. 0.119 2.1 4034500200041 1.5 60. 0.234 1.2 4034500200042 1.6 60. 0.300 1.0 4034500200043 1.7 62. 0.334 1.2 4034500200044 1.8 64. 0.366 1.1 4034500200045 1.9 66. 0.397 1.0 4034500200046 2.0 68. 0.405 0.8 4034500200047 2.1 70. 0.415 1.0 4034500200048 2.2 72. 0.428 0.9 4034500200049 2.3 73. 0.430 0.8 4034500200050 2.4 74. 0.432 0.9 4034500200051 2.5 75. 0.432 0.8 4034500200052 2.6 76. 0.435 0.8 4034500200053 2.7 78. 0.435 0.8 4034500200054 2.8 80. 0.438 1.1 4034500200055 2.9 82. 0.437 1.0 4034500200056 3.0 84. 0.439 1.0 4034500200057 3.1 86. 0.444 1.1 4034500200058 3.2 88. 0.446 1.2 4034500200059 3.3 90. 0.452 1.3 4034500200060 3.4 92. 0.462 1.4 4034500200061 3.6 180. 0.474 1.3 4034500200062 3.8 160. 0.476 1.4 4034500200063 4.0 120. 0.488 1.3 4034500200064 4.2 110. 0.498 1.2 4034500200065 4.4 105. 0.501 1.1 4034500200066 4.6 105. 0.506 1.3 4034500200067 4.8 105. 0.512 1.2 4034500200068 5.0 110. 0.513 1.2 4034500200069 5.2 115. 0.518 1.2 4034500200070 5.4 120. 0.518 1.2 4034500200071 5.6 125. 0.519 1.1 4034500200072 5.8 130. 0.521 1.2 4034500200073 6.0 135. 0.527 1.3 4034500200074 6.2 140. 0.526 1.3 4034500200075 6.4 145. 0.538 1.1 4034500200076 6.6 150. 0.539 1.1 4034500200077 6.8 160. 0.546 1.1 4034500200078 7.0 170. 0.542 1.1 4034500200079 7.2 180. 0.532 1.0 4034500200080 7.4 190. 0.522 1.1 4034500200081 ENDDATA 43 0 4034500200082 ENDSUBENT 81 0 4034500299999 ENDENTRY 2 0 4034599999999