ENTRY 23371 20180716 22692337100000001 SUBENT 23371001 20180716 22692337100100001 BIB 10 31 2337100100002 AUTHOR (G.de Saussure, J.Blons, C.Jousseaume, A.Michaudon, 2337100100003 Y.Pranal) 2337100100004 TITLE Measurement and analysis of the fission cross-section 2337100100005 of Pu239 from 0 to 5 keV 2337100100006 REFERENCE (C,65SALZBURG,1,205,1965) In French. 2337100100007 INSTITUTE (2FR SAC) 2337100100008 FACILITY (ACCEL,2FR SAC) 500 pulses of 100 ns/sec. 2337100100009 SAMPLE 310 mg of Pu-239. 2337100100010 Pu-239 - 98.6+-0.02 %, Pu-240 - 1.37+-0.02 %, 2337100100011 Pu-241 - 0.025+-0.005 % . 2337100100012 METHOD (TOF) 2337100100013 Black resonance screens to determine background. 2337100100014 Two energy ranges: 2337100100015 0.16-100 eV 11 eV - 5 keV 2337100100016 Channel 50-1600 nsec 50-400 nsec 2337100100017 Flight path 10.80 m 19 m 2337100100018 Accumulation time 34 hr 140 hr 2337100100019 Resolution 1.2 s/m at 0.16 eV 35 ns/m at 12 eV 2337100100020 46 ns/m at 100 eV 11 ns/m at 100 eV2337100100021 6 ns/m at 5 keV 2337100100022 Filter Boron Boron 2337100100023 Screen Co-Ta Ta 2337100100024 DETECTOR (SCIN) Gas scintillator to measure fission rate. 2337100100025 Consists of 6 independent cells, each with 56 UVP 2337100100026 photomultipliers. 2337100100027 65 % efficiency of fission detection. 2337100100028 (BF3) BF3 counter with efficiency proportional to 2337100100029 1/sqrt(E) to measure incident neutron energy spectrum. 2337100100030 Calibrated by 7.8 eV resonance. 2337100100031 ANALYSIS Breight-Wigner analysis. 2337100100032 HISTORY (20180716C) M.M. 2337100100033 ENDBIB 31 0 2337100100034 NOCOMMON 0 0 2337100100035 ENDSUBENT 34 0 2337100199999 SUBENT 23371002 20180716 22692337100200001 BIB 4 6 2337100200002 REACTION 1(94-PU-239(N,TOT),,WID) 2337100200003 2(94-PU-239(N,F),,WID,,S0) 2337100200004 REL-REF (A,,L.M.Bollinger+,C,58GENEVA,15,127,1958) 2337100200005 Mainly agree. 2337100200006 ERR-ANALYS (DATA-ERR) Type of uncertainty is not explained 2337100200007 STATUS (TABLE) Table I of Conf.Proc. 65SALZBURG,1,205,1965 2337100200008 ENDBIB 6 0 2337100200009 NOCOMMON 0 0 2337100200010 DATA 5 88 2337100200011 EN-RES DATA 1DATA-ERR 1DATA 2DATA-ERR 2 2337100200012 EV MILLI-EV MILLI-EV B*EV B*EV 2337100200013 7.83 84. 3. 108.2 0.5 2337100200014 9.59 245. 65. 6.1 1. 2337100200015 10.93 185. 5. 256. 3. 2337100200016 11.48 480. 170. 37.9 15. 2337100200017 11.90 68. 5. 62.8 1.5 2337100200018 14.28 145. 6. 64.5 1. 2337100200019 14.68 82. 3. 115.4 2. 2337100200020 15.5 895. 70. 105.4 8. 2337100200021 17.6 84. 4. 93.8 2. 2337100200022 22.2 101. 7. 133.7 3. 2337100200023 23.9 692. 72. 13.1 1. 2337100200024 26.2 89. 6. 59.4 2. 2337100200025 27.3 330. 30. 15.5 1. 2337100200026 32.3 176. 15. 12.9 0.5 2337100200027 35.3 140. 70. 1.9 0.3 2337100200028 41.4 182. 8. 44.6 1. 2337100200029 44.6 101. 8. 25.9 0.8 2337100200030 47.6 310. 9. 58.9 1. 2337100200031 49.7 881. 30. 53.4 2. 2337100200032 50.0 50. 20. 23.3 2. 2337100200033 52.5 92. 5. 51.5 1. 2337100200034 55.6 83. 26. 21.6 1. 2337100200035 57.4 593. 60. 142. 8. 2337100200036 58.0 850. 120. 102. 8. 2337100200037 59.1 239. 35. 127.9 5. 2337100200038 61.1 240. 40. 2337100200039 62.9 147. 80. 15. 1.5 2337100200040 65.5 250. 25. 208.4 6. 2337100200041 66.4 49.6 5.3 2337100200042 74.1 108. 25. 35.4 1.4 2337100200043 75.1 173. 8. 337.8 5. 2337100200044 81.7 50. 3. 2337100200045 83.3 78.7 6.9 2337100200046 84.9 144.9 12.5 2337100200047 85.6 260. 50. 60.5 7.7 2337100200048 86.0 141. 9.9 2337100200049 87.9 41.3 3.8 2337100200050 90.9 157. 25. 40.1 2.5 2337100200051 92.6 17.2 2.6 2337100200052 95.5 270. 120. 16.3 1.5 2337100200053 96.7 73. 2.4 2337100200054 97.6 400. 250. 10.9 1.4 2337100200055 100.0 16.5 1.5 2337100200056 101.2 350. 3.2 0.6 2337100200057 103.1 400. 150. 10.3 1.8 2337100200058 105.5 250. 11. 1. 2337100200059 106.8 150. 40. 61.3 1.3 2337100200060 110.4 170. 1.2 0.4 2337100200061 114.5 1.9 0.9 2337100200062 115.2 3.4 1.1 2337100200063 116.2 300. 50.4 5. 2337100200064 117.9 22.2 2.8 2337100200065 118.9 180. 40. 112.3 2.8 2337100200066 121.1 220. 20.6 0.8 2337100200067 123.5 100. 5.1 0.5 2337100200068 125.0 4.2 0.7 2337100200069 126.3 10.6 1. 2337100200070 127.6 7.6 1. 2337100200071 130.3 40.5 2.4 2337100200072 132.1 80. 2.9 2337100200073 133.8 19.2 1.8 2337100200074 135.5 4.5 0.7 2337100200075 136.8 200. 37.0 1.3 2337100200076 140.0 2.4 0.4 2337100200077 142.9 24.9 3. 2337100200078 143.4 27.3 3.1 2337100200079 146.3 200. 17.7 1. 2337100200080 147.3 4.4 2337100200081 148.1 5.3 2337100200082 149.4 7.7 2337100200083 155.8 6.5 2. 2337100200084 157.0 720. 109.9 4. 2337100200085 160.9 550. 22.9 2.5 2337100200086 164.4 250. 36.5 1.5 2337100200087 166.9 320. 50.2 2.2 2337100200088 170.5 880. 300. 11.6 1.3 2337100200089 175.9 12.6 1.1 2337100200090 177.1 4.1 0.5 2337100200091 178.8 3.7 0.5 2337100200092 181.7 0.3 0.8 2337100200093 184.0 38.9 1.6 2337100200094 185.2 19. 1.2 2337100200095 188.6 8.1 0.9 2337100200096 190.2 2.5 0.8 2337100200097 195.1 760. 200. 160.9 12.9 2337100200098 196.3 25.5 5. 2337100200099 199.1 65.7 3.2 2337100200100 203.4 177.3 6.2 2337100200101 ENDDATA 90 0 2337100200102 ENDSUBENT 101 0 2337100299999 ENDENTRY 2 0 2337199999999