ENTRY 30909 20211108 32033090900000001 SUBENT 30909001 20211108 32033090900100001 BIB 13 44 3090900100002 TITLE Prompt neutrons from 236U fission fragments 3090900100003 AUTHOR (J.W.Boldeman, A.R.de L.Musgrove, R.L.Walsh) 3090900100004 INSTITUTE (3AULAUA) 3090900100005 REFERENCE (J,AUJ,24,821,1971) 3090900100006 (R,AAEC/TM-581,1971) Preliminary results. 3090900100007 SAMPLE 235U nitrate in ethanol solution electrosprayed onto 3090900100008 gold-plated VYNS films. 3090900100009 The 235U target, Au layer, and VYNS film thickness 3090900100010 were 30, 15 and 20 ug/cm2, respectively. 3090900100011 The 235U target was placed at 45 deg. to the axis of 3090900100012 the fragment detectors and the neutron beam. 3090900100013 FACILITY (REAC,3AULAUA) A highly collimated beam of thermal 3090900100014 neutrons from the 10 MW reactor HIFAR 3090900100015 INC-SOURCE (REAC) The thermal neutron flux (1.5E+7 neutrons/cm2/s)3090900100016 with the beam diameter of 1.5 cm. 3090900100017 INC-SPECT The neutrons emerge from the graphite reflector of the 3090900100018 reactor and consequently the fast neutron and 3090900100019 epithermal components of the beam are very small. 3090900100020 DETECTOR (SIBAR) Typical surface barrier diodes made of n-type 3090900100021 silicon and operated at 90 V reverse bias. 3090900100022 Detectors were collimated to active areas of 3 cm2. 3090900100023 (STANK) Large liquid scintillator tank containing 3090900100024 ~60 l. of NE323, a trimethyl benzene scintillator 3090900100025 containing a loading of 0.5% by weight gadolinium. 3090900100026 MONITOR (98-CF-252(0,F),PR,NU) 3090900100027 CORRECTION Corrected for scintillator geometry and backscatter 3090900100028 from the complementary fragment. 3090900100029 The detector geometry and backscatter correction 3090900100030 assumed that: 3090900100031 (l) the excitation energies of the two fragments 3090900100032 were correlated, and 3090900100033 (2) the detection efficiency of the scintillator was 3090900100034 constant with neutron energy. 3090900100035 The remaining contributions (i.e. from neutrons 3090900100036 correlated with the fragment direction) were 3090900100037 corrected for detector geometry and backscatter. 3090900100038 It was assumed that, for a particular mass division, 3090900100039 the scission neutrons were emitted from each fragment 3090900100040 in the same proportions as those from the moving 3090900100041 fragments. 3090900100042 ERR-ANALYS (ERR-1,,1.) Dead time losses (<1%) 3090900100043 HISTORY (20100825C) SD, LV 3090900100044 (20141120A) On. Major change in 002-004. 005-007 added.3090900100045 (20211011U) VS. Reference AAEC/TM-581,1971 added. 3090900100046 ENDBIB 44 0 3090900100047 COMMON 2 3 3090900100048 EN-DUMMY MONIT 3090900100049 EV PRT/FIS 3090900100050 0.0253 3.782 3090900100051 ENDCOMMON 3 0 3090900100052 ENDSUBENT 51 0 3090900199999 SUBENT 30909002 20141120 31673090900200001 BIB 3 3 3090900200002 REACTION (92-U-235(N,F),PRE,AKE,LF+HF,MXW) 3090900200003 STATUS (TABLE) Text (p.827) of Austr.J.Phys.24(1971)821 3090900200004 HISTORY (20141120A) On. REACTION(SF8): MXW added 3090900200005 ENDBIB 3 0 3090900200006 NOCOMMON 0 0 3090900200007 DATA 1 1 3090900200008 DATA 3090900200009 MEV 3090900200010 170.8 3090900200011 ENDDATA 3 0 3090900200012 ENDSUBENT 11 0 3090900299999 SUBENT 30909003 20141120 31673090900300001 BIB 3 3 3090900300002 REACTION (92-U-235(N,F)MASS,PRE,KE,LF+HF,MXW) 3090900300003 STATUS (CURVE) Fig.3 of Austr.J.Phys.24(1971)821 3090900300004 HISTORY (20141120A) On. REACTION(SF8): MXW added 3090900300005 ENDBIB 3 0 3090900300006 COMMON 1 3 3090900300007 ERR-DIG 3090900300008 MEV 3090900300009 0.04 3090900300010 ENDCOMMON 3 0 3090900300011 DATA 2 19 3090900300012 MASS DATA 3090900300013 NO-DIM MEV 3090900300014 119. 148.89 3090900300015 121. 152.16 3090900300016 123. 156.86 3090900300017 125. 165.15 3090900300018 127. 177.27 3090900300019 129. 178.78 3090900300020 131. 179.11 3090900300021 133. 178.74 3090900300022 135. 176.24 3090900300023 137. 174.38 3090900300024 139. 171.18 3090900300025 141. 170.17 3090900300026 143. 167.09 3090900300027 145. 165.33 3090900300028 147. 163.04 3090900300029 149. 160.38 3090900300030 151. 159.00 3090900300031 153. 155.32 3090900300032 155. 152.08 3090900300033 ENDDATA 21 0 3090900300034 ENDSUBENT 33 0 3090900399999 SUBENT 30909004 20141120 31673090900400001 BIB 4 4 3090900400002 REACTION (92-U-235(N,F)MASS,PR/FRG,NU,,MXW) 3090900400003 ERR-ANALYS (ERR-S) Statistical errors 3090900400004 STATUS (CURVE) Fig.4 of Austr.J.Phys.24(1971)821 3090900400005 HISTORY (20141120A) On. REACTION corrected 3090900400006 ENDBIB 4 0 3090900400007 COMMON 1 3 3090900400008 ERR-DIG 3090900400009 PRT/FIS 3090900400010 0.002 3090900400011 ENDCOMMON 3 0 3090900400012 DATA 3 36 3090900400013 MASS DATA ERR-S 3090900400014 NO-DIM PRT/FIS PRT/FIS 3090900400015 81. 0.811 0.060 3090900400016 83. 0.820 0.047 3090900400017 85. 0.845 0.060 3090900400018 87. 0.952 0.056 3090900400019 89. 1.084 0.043 3090900400020 91. 1.143 0.038 3090900400021 93. 1.254 0.038 3090900400022 95. 1.275 0.038 3090900400023 97. 1.369 0.043 3090900400024 99. 1.305 0.034 3090900400025 101. 1.424 0.034 3090900400026 103. 1.449 0.034 3090900400027 105. 1.594 0.051 3090900400028 107. 1.880 0.060 3090900400029 109. 1.983 0.077 3090900400030 111. 1.696 0.132 3090900400031 113. 1.687 0.167 3090900400032 115. 1.490 0.299 3090900400033 121. 1.378 0.265 3090900400034 123. 1.297 0.179 3090900400035 125. 0.878 0.128 3090900400036 127. 0.758 0.098 3090900400037 129. 0.497 0.068 3090900400038 131. 0.518 0.034 3090900400039 133. 0.748 0.034 3090900400040 135. 0.919 0.038 3090900400041 137. 0.957 0.043 3090900400042 139. 1.132 0.038 3090900400043 141. 1.170 0.034 3090900400044 143. 1.307 0.051 3090900400045 145. 1.426 0.047 3090900400046 147. 1.593 0.073 3090900400047 149. 1.750 0.081 3090900400048 151. 1.776 0.098 3090900400049 153. 1.993 0.132 3090900400050 155. 2.019 0.192 3090900400051 ENDDATA 38 0 3090900400052 ENDSUBENT 51 0 3090900499999 SUBENT 30909005 20141120 31673090900500001 BIB 4 4 3090900500002 REACTION (92-U-235(N,F)MASS,PR/FRG,NU/TKE,,MXW) 3090900500003 ERR-ANALYS (DATA-ERR) No information on source of uncertainties 3090900500004 STATUS (CURVE) Fig.5 of Austr.J.Phys.24(1971)821 3090900500005 HISTORY (20141120C) On 3090900500006 ENDBIB 4 0 3090900500007 NOCOMMON 0 0 3090900500008 DATA 5 132 3090900500009 TKE-MIN TKE-MAX MASS DATA DATA-ERR 3090900500010 MEV MEV NO-DIM PRT/FIS PRT/FIS 3090900500011 140. 150. 81. 1.533 0.131 3090900500012 140. 150. 83. 1.472 0.121 3090900500013 140. 150. 85. 1.502 0.150 3090900500014 140. 150. 87. 1.616 0.148 3090900500015 140. 150. 89. 2.173 0.200 3090900500016 140. 150. 91. 1.868 0.213 3090900500017 140. 150. 93. 2.509 0.260 3090900500018 140. 150. 143. 1.524 0.470 3090900500019 140. 150. 145. 2.012 0.389 3090900500020 140. 150. 148. 1.942 0.399 3090900500021 140. 150. 149. 2.513 0.347 3090900500022 140. 150. 151. 1.973 0.298 3090900500023 140. 150. 154. 2.879 0.196 3090900500024 140. 150. 156. 2.504 0.320 3090900500025 150. 160. 81. 0.935 0.116 3090900500026 150. 160. 83. 0.907 0.088 3090900500027 150. 160. 85. 1.035 0.076 3090900500028 150. 160. 87. 1.148 3090900500029 150. 160. 89. 1.288 3090900500030 150. 160. 91. 1.480 3090900500031 150. 160. 93. 1.692 3090900500032 150. 160. 95. 1.884 3090900500033 150. 160. 97. 2.053 3090900500034 150. 160. 99. 2.217 3090900500035 150. 160. 101. 2.329 0.156 3090900500036 150. 160. 103. 2.369 0.212 3090900500037 150. 160. 105. 2.437 0.248 3090900500038 150. 160. 107. 2.882 0.392 3090900500039 150. 160. 131. 1.324 0.188 3090900500040 150. 160. 133. 1.160 0.148 3090900500041 150. 160. 135. 1.324 0.112 3090900500042 150. 160. 137. 1.448 3090900500043 150. 160. 139. 1.556 3090900500044 150. 160. 141. 1.640 3090900500045 150. 160. 143. 1.752 3090900500046 150. 160. 145. 1.836 3090900500047 150. 160. 147. 1.912 3090900500048 150. 160. 149. 2.005 3090900500049 150. 160. 151. 2.165 0.156 3090900500050 150. 160. 153. 2.301 0.160 3090900500051 150. 160. 155. 2.389 0.248 3090900500052 160. 170. 81. 0.662 0.194 3090900500053 160. 170. 83. 0.614 0.123 3090900500054 160. 170. 85. 0.737 0.083 3090900500055 160. 170. 87. 0.812 3090900500056 160. 170. 89. 0.967 3090900500057 160. 170. 91. 1.118 3090900500058 160. 170. 93. 1.359 3090900500059 160. 170. 95. 1.565 3090900500060 160. 170. 97. 1.712 3090900500061 160. 170. 99. 1.799 3090900500062 160. 170. 101. 1.871 3090900500063 160. 170. 103. 2.049 3090900500064 160. 170. 105. 2.275 0.135 3090900500065 160. 170. 107. 2.624 0.162 3090900500066 160. 170. 109. 2.703 0.210 3090900500067 160. 170. 111. 2.477 0.246 3090900500068 160. 170. 125. 0.551 0.230 3090900500069 160. 170. 127. 0.729 0.194 3090900500070 160. 170. 129. 0.690 0.151 3090900500071 160. 170. 131. 0.860 3090900500072 160. 170. 133. 1.070 3090900500073 160. 170. 135. 1.165 3090900500074 160. 170. 137. 1.209 3090900500075 160. 170. 139. 1.264 3090900500076 160. 170. 141. 1.316 3090900500077 160. 170. 143. 1.407 3090900500078 160. 170. 145. 1.470 3090900500079 160. 170. 147. 1.490 3090900500080 160. 170. 149. 1.534 3090900500081 160. 170. 151. 1.474 3090900500082 160. 170. 153. 1.577 3090900500083 160. 170. 155. 1.661 0.269 3090900500084 170. 180. 87. 0.594 0.116 3090900500085 170. 180. 89. 0.718 0.088 3090900500086 170. 180. 91. 0.746 0.076 3090900500087 170. 180. 93. 0.939 3090900500088 170. 180. 95. 1.007 3090900500089 170. 180. 97. 1.159 3090900500090 170. 180. 99. 1.328 3090900500091 170. 180. 101. 1.464 3090900500092 170. 180. 103. 1.588 3090900500093 170. 180. 105. 1.773 3090900500094 170. 180. 107. 2.246 3090900500095 170. 180. 109. 2.390 3090900500096 170. 180. 111. 2.045 3090900500097 170. 180. 125. 0.578 3090900500098 170. 180. 127. 0.429 3090900500099 170. 180. 129. 0.489 3090900500100 170. 180. 131. 0.678 3090900500101 170. 180. 133. 0.866 3090900500102 170. 180. 135. 0.951 3090900500103 170. 180. 137. 0.995 3090900500104 170. 180. 139. 1.035 3090900500105 170. 180. 141. 1.099 3090900500106 170. 180. 143. 1.163 3090900500107 170. 180. 145. 1.320 0.092 3090900500108 170. 180. 147. 1.223 0.096 3090900500109 170. 180. 149. 1.295 0.197 3090900500110 180. 190. 91. 0.249 0.121 3090900500111 180. 190. 93. 0.378 0.084 3090900500112 180. 190. 95. 0.442 0.060 3090900500113 180. 190. 97. 0.575 3090900500114 180. 190. 99. 0.720 3090900500115 180. 190. 101. 0.881 3090900500116 180. 190. 103. 1.122 3090900500117 180. 190. 105. 1.395 3090900500118 180. 190. 107. 1.665 3090900500119 180. 190. 109. 1.420 3090900500120 180. 190. 111. 1.424 3090900500121 180. 190. 125. 0.937 3090900500122 180. 190. 127. 0.495 3090900500123 180. 190. 129. 0.286 3090900500124 180. 190. 131. 0.603 3090900500125 180. 190. 133. 0.664 3090900500126 180. 190. 135. 0.792 3090900500127 180. 190. 137. 0.760 3090900500128 180. 190. 139. 0.736 0.084 3090900500129 180. 190. 141. 0.643 0.105 3090900500130 180. 190. 143. 0.515 0.217 3090900500131 190. 200. 99. 0.461 0.132 3090900500132 190. 200. 101. 0.509 0.084 3090900500133 190. 200. 103. 0.649 0.096 3090900500134 190. 200. 105. 0.809 0.100 3090900500135 190. 200. 107. 0.969 0.096 3090900500136 190. 200. 109. 0.913 0.148 3090900500137 190. 200. 127. 0.409 0.168 3090900500138 190. 200. 129. 0.513 0.132 3090900500139 190. 200. 131. 0.208 0.064 3090900500140 190. 200. 133. 0.316 0.092 3090900500141 190. 200. 135. 0.421 0.096 3090900500142 190. 200. 137. 0.505 0.188 3090900500143 ENDDATA 134 0 3090900500144 ENDSUBENT 143 0 3090900599999 SUBENT 30909006 20141120 31673090900600001 BIB 4 4 3090900600002 REACTION (92-U-235(N,F),PR,NU/TKE,,MXW) 3090900600003 ERR-ANALYS (DATA-ERR) No information on source of uncertainties 3090900600004 STATUS (CURVE) Fig.6 of Austr.J.Phys.24(1971)821 3090900600005 HISTORY (20141120C) On 3090900600006 ENDBIB 4 0 3090900600007 NOCOMMON 0 0 3090900600008 DATA 3 10 3090900600009 TKE DATA DATA-ERR 3090900600010 MEV PRT/FIS PRT/FIS 3090900600011 152. 3.662 0.058 3090900600012 157. 3.184 0.072 3090900600013 162. 2.937 0.063 3090900600014 167. 2.638 0.053 3090900600015 172. 2.459 0.039 3090900600016 177. 2.043 0.048 3090900600017 182. 1.739 0.068 3090900600018 187. 1.527 0.072 3090900600019 192. 1.309 0.068 3090900600020 197. 0.870 0.116 3090900600021 ENDDATA 12 0 3090900600022 ENDSUBENT 21 0 3090900699999 SUBENT 30909007 20141120 31673090900700001 BIB 4 4 3090900700002 REACTION (92-U-235(N,F)MASS,PR/FRG,NU/TKE,,MXW) 3090900700003 ERR-ANALYS (DATA-ERR) No information on source of uncertainties 3090900700004 STATUS (CURVE) Fig.7 of Austr.J.Phys.24(1971)821 3090900700005 HISTORY (20141120C) On 3090900700006 ENDBIB 4 0 3090900700007 NOCOMMON 0 0 3090900700008 DATA 4 66 3090900700009 MASS TKE DATA DATA-ERR 3090900700010 NO-DIM MEV PRT/FIS PRT/FIS 3090900700011 85. 147.48 1.50 0.24 3090900700012 85. 152.42 1.09 0.13 3090900700013 85. 157.37 1.00 0.10 3090900700014 85. 162.44 0.77 0.09 3090900700015 85. 167.45 0.64 0.12 3090900700016 85. 172.46 0.58 0.22 3090900700017 91. 147.42 1.85 0.19 3090900700018 91. 152.42 1.62 0.14 3090900700019 91. 157.37 1.35 0.10 3090900700020 91. 162.57 1.29 0.08 3090900700021 91. 167.45 0.97 0.06 3090900700022 91. 172.52 0.83 0.06 3090900700023 91. 177.46 0.67 0.10 3090900700024 91. 182.54 0.38 0.15 3090900700025 97. 152.40 2.36 0.20 3090900700026 97. 157.49 1.86 0.13 3090900700027 97. 162.45 1.72 0.08 3090900700028 97. 167.47 1.64 0.06 3090900700029 97. 172.56 1.32 0.06 3090900700030 97. 177.39 0.99 0.07 3090900700031 97. 182.42 0.76 0.07 3090900700032 97. 187.50 0.39 0.10 3090900700033 97. 192.53 0.41 0.22 3090900700034 105. 152.70 2.55 0.39 3090900700035 105. 157.63 2.35 0.21 3090900700036 105. 162.69 2.37 0.21 3090900700037 105. 167.68 2.17 0.14 3090900700038 105. 172.54 1.79 0.11 3090900700039 105. 177.54 1.74 0.08 3090900700040 105. 182.53 1.52 0.07 3090900700041 105. 187.52 1.26 0.11 3090900700042 105. 192.51 0.97 0.12 3090900700043 105. 197.50 0.63 0.21 3090900700044 131. 152.42 1.47 0.49 3090900700045 131. 157.50 1.22 0.20 3090900700046 131. 162.50 0.82 0.21 3090900700047 131. 167.45 0.99 0.18 3090900700048 131. 172.52 0.79 0.11 3090900700049 131. 177.40 0.63 0.09 3090900700050 131. 182.41 0.40 0.09 3090900700051 131. 187.48 0.36 0.08 3090900700052 131. 192.42 0.51 0.15 3090900700053 131. 197.37 0.24 0.11 3090900700054 139. 152.18 1.75 0.25 3090900700055 139. 157.22 1.52 0.12 3090900700056 139. 162.26 1.44 0.11 3090900700057 139. 167.37 1.15 0.10 3090900700058 139. 172.28 1.18 0.08 3090900700059 139. 177.38 0.93 0.09 3090900700060 139. 182.23 0.84 0.10 3090900700061 139. 187.40 0.69 0.17 3090900700062 139. 192.44 0.81 0.40 3090900700063 145. 147.71 2.06 0.38 3090900700064 145. 152.58 2.00 0.20 3090900700065 145. 157.57 1.70 0.10 3090900700066 145. 162.69 1.64 0.11 3090900700067 145. 167.62 1.34 0.11 3090900700068 145. 172.54 1.32 0.13 3090900700069 145. 177.54 1.35 0.19 3090900700070 145. 182.46 0.49 0.48 3090900700071 151. 147.61 2.01 0.35 3090900700072 151. 152.49 2.31 0.22 3090900700073 151. 157.56 2.01 0.17 3090900700074 151. 162.44 1.64 0.15 3090900700075 151. 167.45 1.64 0.40 3090900700076 151. 172.46 1.73 0.71 3090900700077 ENDDATA 68 0 3090900700078 ENDSUBENT 77 0 3090900799999 ENDENTRY 7 0 3090999999999