ENTRY 10658 20221020 1065800000001 SUBENT 10658001 20221020 20231011 1065800100001 BIB 12 23 1065800100002 TITLE Measurement of the neutron-induced fission cross 1065800100003 section of 232Th relative to 235U from 0.7 to 30 MeV 1065800100004 AUTHOR (J.W.Behrens, J.C.Browne, E.Ables) 1065800100005 INSTITUTE (1USALRL) 1065800100006 REFERENCE (J,NSE,81,512,1982) 1065800100007 (R,UCID-17442,19770413) 1065800100008 REL-REF (M,10653001,J.W.Behrens+,J,NSE,63,250,1977) 1065800100009 Description on corrections 1065800100010 FACILITY (LINAC,1USALRL) 100-MeV linear accelerator 1065800100011 INC-SOURCE (PHOTO) Photoneutrons from water-cooled tantalum target1065800100012 INC-SPECT Typical energy resolutions are ~1.5% at 1 MeV and 6% at1065800100013 20 MeV 1065800100014 DETECTOR (IOCH) Low mass parallel plate ionization fission 1065800100015 chambers 1065800100016 METHOD (TOF) 15.7 m flight path length. 1065800100017 Photofission induced by gamma flash used as main 1065800100018 timing reference. 1065800100019 STATUS (APRVD) Approved by author 77/07/25. 1065800100020 HISTORY (19770418C) 1065800100021 (19780214U) Reference corrected 1065800100022 (19820903A) BIB corrections. 1065800100023 (20080819U) Converted to new date formats, lower case. 1065800100024 (20221020A) VT+On. Major revision in 002. 003 added. 1065800100025 ENDBIB 23 0 1065800100026 NOCOMMON 0 0 1065800100027 ENDSUBENT 26 0 1065800199999 SUBENT 10658002 20221020 20231011 1065800200001 BIB 6 14 1065800200002 REACTION ((90-TH-232(N,F),,SIG)/(92-U-235(N,F),,SIG)) 1065800200003 MONITOR ((90-TH-232(N,F),,SIG,,AV)/(92-U-235(N,F),,SIG,,AV)) 1065800200004 Ratio determined by the threshold method 1065800200005 SAMPLE - 232Th sample (75 mg, 0.24 mg/cm2) 1065800200006 - 235U sample (60 mg, 0.19 mg/cm2, 99.91% enrichment) 1065800200007 ERR-ANALYS (ERR-T) One standard deviation RMS sum of 1065800200008 (ERR-S) Statistical uncertainty 1065800200009 (ERR-SYS) Sytematic uncertainty 1065800200010 (MONIT-ERR) Normalization uncertainty 1065800200011 STATUS (TABLE) Table IV of Nucl.Sci.Eng.81(1982)512 1065800200012 (DEP,10658003) Ratio determined by the threshold method1065800200013 HISTORY (19820903A) Data revision 1065800200014 (20221020A) VT+On. Data corrected at 1.076, 1.557, 1065800200015 1.770, 6.825 and 7.086 MeV; ERR-SYS added. 1065800200016 ENDBIB 14 0 1065800200017 COMMON 4 3 1065800200018 EN-NRM-MIN EN-NRM-MAX MONIT MONIT-ERR 1065800200019 MEV MEV NO-DIM PER-CENT 1065800200020 1.75 4.00 0.1086 2.18 1065800200021 ENDCOMMON 3 0 1065800200022 DATA 5 144 1065800200023 EN DATA ERR-S ERR-T ERR-SYS 1065800200024 MEV NO-DIM PER-CENT PER-CENT PER-CENT 1065800200025 0.7053 0.00007 61.7 61.7 0.5 1065800200026 0.7137 0.00003 61.6 61.6 0.5 1065800200027 0.7224 0.00007 61.0 61.0 0.5 1065800200028 0.7311 0.00010 51.1 51.1 0.5 1065800200029 0.7401 0.00013 42.1 42.2 0.5 1065800200030 0.7492 0.00021 31.9 32.0 0.5 1065800200031 0.7584 0.00021 31.7 31.8 0.5 1065800200032 0.7679 0.00008 52.1 52.1 0.5 1065800200033 0.7775 0.00010 46.1 46.2 0.5 1065800200034 0.7873 0.00016 36.0 36.1 0.5 1065800200035 0.7973 0.00017 31.8 31.9 0.5 1065800200036 0.8074 0.00009 60.2 60.2 0.5 1065800200037 0.8178 0.00013 41.9 42.0 0.5 1065800200038 0.8284 0.00017 36.0 36.1 0.5 1065800200039 0.8392 0.00014 38.5 38.6 0.5 1065800200040 0.8501 0.00012 41.6 41.7 0.5 1065800200041 0.8614 0.00023 30.3 30.4 0.5 1065800200042 0.8728 0.00021 30.3 30.4 0.5 1065800200043 0.8845 0.00042 20.9 21.0 0.5 1065800200044 0.8963 0.00057 17.6 17.7 0.5 1065800200045 0.9085 0.00069 15.7 15.9 0.5 1065800200046 0.9209 0.00083 14.0 14.2 0.5 1065800200047 0.9335 0.00104 12.8 13.0 0.5 1065800200048 0.9464 0.00157 11.5 11.7 0.5 1065800200049 0.9596 0.00125 12.1 12.3 0.5 1065800200050 0.9730 0.00105 12.9 13.1 0.5 1065800200051 0.9868 0.00096 13.5 13.7 0.5 1065800200052 1.001 0.00127 11.8 12.0 0.4 1065800200053 1.015 0.00128 11.7 11.9 0.4 1065800200054 1.030 0.00175 9.8 10.1 0.4 1065800200055 1.045 0.00172 9.8 10.1 0.4 1065800200056 1.060 0.00180 9.5 9.8 0.4 1065800200057 1.076 0.00177 9.4 9.7 0.4 1065800200058 1.092 0.00186 9.1 9.4 0.4 1065800200059 1.108 0.00191 9.1 9.4 0.4 1065800200060 1.125 0.00215 8.7 9.0 0.4 1065800200061 1.142 0.00216 8.6 8.9 0.4 1065800200062 1.159 0.00300 7.3 7.6 0.4 1065800200063 1.177 0.00376 6.4 6.8 0.4 1065800200064 1.195 0.00480 5.6 6.0 0.4 1065800200065 1.214 0.00615 5.1 5.6 0.4 1065800200066 1.233 0.00762 4.5 5.0 0.4 1065800200067 1.253 0.00973 4.0 4.6 0.4 1065800200068 1.273 0.01194 3.6 4.2 0.4 1065800200069 1.294 0.01777 3.0 3.7 0.4 1065800200070 1.315 0.02574 2.5 3.4 0.4 1065800200071 1.336 0.03246 2.2 3.1 0.4 1065800200072 1.359 0.04054 2.0 3.0 0.4 1065800200073 1.381 0.04596 1.9 2.9 0.4 1065800200074 1.405 0.05096 1.8 2.9 0.4 1065800200075 1.428 0.05523 1.7 2.8 0.4 1065800200076 1.453 0.05763 1.7 2.8 0.4 1065800200077 1.478 0.05788 1.7 2.8 0.4 1065800200078 1.504 0.06387 1.6 2.7 0.4 1065800200079 1.530 0.07505 1.5 2.7 0.4 1065800200080 1.557 0.09017 1.4 2.6 0.4 1065800200081 1.585 0.09590 1.3 2.6 0.4 1065800200082 1.614 0.08936 1.4 2.6 0.4 1065800200083 1.643 0.07785 1.5 2.7 0.4 1065800200084 1.674 0.06920 1.7 2.8 0.4 1065800200085 1.705 0.07375 1.6 2.7 0.4 1065800200086 1.737 0.07234 1.7 2.8 0.4 1065800200087 1.770 0.06403 1.7 2.8 0.3 1065800200088 1.804 0.06926 1.6 2.7 0.3 1065800200089 1.838 0.08560 1.5 2.7 0.3 1065800200090 1.874 0.09383 1.5 2.7 0.3 1065800200091 1.911 0.09623 1.5 2.7 0.3 1065800200092 1.949 0.09178 1.5 2.7 0.3 1065800200093 1.988 0.09461 1.5 2.7 0.3 1065800200094 2.029 0.09007 1.5 2.7 0.3 1065800200095 2.070 0.09132 1.5 2.7 0.3 1065800200096 2.113 0.1023 1.5 2.7 0.3 1065800200097 2.157 0.1040 1.5 2.7 0.3 1065800200098 2.203 0.1059 1.5 2.7 0.3 1065800200099 2.250 0.1052 1.5 2.7 0.3 1065800200100 2.299 0.09649 1.7 2.8 0.3 1065800200101 2.349 0.09788 1.7 2.8 0.3 1065800200102 2.401 0.09499 1.7 2.8 0.3 1065800200103 2.454 0.09687 1.7 2.8 0.3 1065800200104 2.510 0.09652 1.7 2.8 0.3 1065800200105 2.567 0.09744 1.8 2.9 0.3 1065800200106 2.626 0.1004 1.8 2.9 0.3 1065800200107 2.688 0.1061 1.8 2.9 0.3 1065800200108 2.751 0.1028 1.8 2.9 0.3 1065800200109 2.817 0.09962 1.8 2.9 0.3 1065800200110 2.886 0.09907 1.9 2.9 0.3 1065800200111 2.956 0.1067 1.8 2.9 0.3 1065800200112 3.030 0.1189 1.8 2.9 0.3 1065800200113 3.106 0.1179 1.8 2.9 0.3 1065800200114 3.185 0.1216 1.8 2.9 0.3 1065800200115 3.267 0.1182 1.8 2.9 0.3 1065800200116 3.353 0.1203 1.9 2.9 0.3 1065800200117 3.442 0.1248 1.8 2.9 0.3 1065800200118 3.534 0.1260 1.8 2.9 0.3 1065800200119 3.630 0.1256 1.8 2.9 0.3 1065800200120 3.730 0.1228 1.9 2.9 0.3 1065800200121 3.835 0.1242 1.9 2.9 0.3 1065800200122 3.944 0.1282 1.8 2.9 0.3 1065800200123 4.057 0.1326 1.8 2.9 0.3 1065800200124 4.176 0.1301 1.8 2.9 0.3 1065800200125 4.300 0.1273 1.9 2.9 0.3 1065800200126 4.429 0.1291 1.8 2.9 0.3 1065800200127 4.564 0.1343 1.8 2.9 0.3 1065800200128 4.706 0.1352 1.8 2.9 0.3 1065800200129 4.855 0.1374 1.8 2.9 0.3 1065800200130 5.010 0.1415 1.8 2.9 0.3 1065800200131 5.173 0.1443 1.8 2.9 0.3 1065800200132 5.345 0.1414 1.8 2.9 0.3 1065800200133 5.525 0.1365 1.7 2.8 0.3 1065800200134 5.714 0.1348 1.7 2.8 0.3 1065800200135 5.913 0.1382 1.6 2.7 0.3 1065800200136 6.123 0.1562 1.5 2.7 0.3 1065800200137 6.344 0.1865 1.3 2.6 0.3 1065800200138 6.578 0.2205 1.2 2.5 0.3 1065800200139 6.825 0.2458 1.1 2.5 0.3 1065800200140 7.086 0.2520 1.1 2.5 0.4 1065800200141 7.362 0.2490 1.1 2.5 0.4 1065800200142 7.655 0.2233 1.1 2.5 0.4 1065800200143 7.965 0.2144 1.2 2.5 0.4 1065800200144 8.295 0.2053 1.2 2.5 0.4 1065800200145 8.647 0.1934 1.3 2.6 0.4 1065800200146 9.021 0.1887 1.4 2.6 0.4 1065800200147 9.420 0.1906 1.4 2.6 0.4 1065800200148 9.846 0.1877 1.5 2.7 0.4 1065800200149 10.30 0.1794 1.7 2.8 0.5 1065800200150 10.79 0.1804 1.7 2.8 0.5 1065800200151 11.31 0.1792 1.8 2.9 0.5 1065800200152 11.88 0.1788 1.9 2.9 0.5 1065800200153 12.49 0.1753 2.0 3.0 0.5 1065800200154 13.14 0.1696 2.0 3.0 0.5 1065800200155 13.85 0.1701 2.0 3.0 0.5 1065800200156 14.62 0.1938 2.0 3.0 0.5 1065800200157 15.45 0.2034 2.1 3.1 0.7 1065800200158 16.36 0.2289 2.1 3.1 0.7 1065800200159 17.35 0.2385 2.2 3.2 0.7 1065800200160 18.44 0.2602 2.3 3.3 0.7 1065800200161 19.63 0.2803 2.4 3.3 0.7 1065800200162 20.94 0.3045 2.4 3.4 0.9 1065800200163 22.39 0.3447 2.4 3.4 0.9 1065800200164 24.00 0.3514 2.6 3.5 0.9 1065800200165 25.79 0.3345 2.8 3.7 0.9 1065800200166 27.80 0.3428 2.9 3.7 0.9 1065800200167 30.05 0.3653 3.0 3.8 1065800200168 32.58 0.4207 3.1 3.9 1065800200169 ENDDATA 146 0 1065800200170 ENDSUBENT 169 0 1065800299999 SUBENT 10658003 20221020 20231011 1065800300001 BIB 5 11 1065800300002 REACTION ((90-TH-232(N,F),,SIG,,AV)/(92-U-235(N,F),,SIG,,AV)) 1065800300003 SAMPLE Mixture of 232Th and 235U (50 mg, 0.32 mg/cm2, 1065800300004 235U/232Th atom number ratio (eta)=0.2785+/-0.0029 1065800300005 determined by coulometry at LLNL) 1065800300006 ERR-ANALYS (ERR-1) Statistics in eta measurement 1065800300007 (ERR-2) Statistics in 232Th/235U count rate ratio 1065800300008 (ERR-3) Systematic error in eta measurement 1065800300009 (ERR-4) Systematic error in 232Th/235U count rate ratio1065800300010 (ERR-T) Total uncertainty 1065800300011 STATUS (TABLE) Table I of Nucl.Sci.Eng.81(1982)512 1065800300012 HISTORY (20221020C) VT+On 1065800300013 ENDBIB 11 0 1065800300014 COMMON 4 3 1065800300015 ERR-1 ERR-2 ERR-3 ERR-4 1065800300016 PER-CENT PER-CENT PER-CENT PER-CENT 1065800300017 0.25 1.85 1.00 0.50 1065800300018 ENDCOMMON 3 0 1065800300019 DATA 4 1 1065800300020 EN-MIN EN-MAX DATA ERR-T 1065800300021 MEV MEV NO-DIM PER-CENT 1065800300022 1.75 4.00 0.1086 2.18 1065800300023 ENDDATA 3 0 1065800300024 ENDSUBENT 23 0 1065800399999 ENDENTRY 3 0 1065899999999