ENTRY 41158 20220928 420841158 0 1 SUBENT 41158001 20220928 420841158 1 1 BIB 11 44 41158 1 2 TITLE Low-energy neutron spectrometer and its application 41158 1 3 for Cf-252 neutron spectrum measurements. 41158 1 4 AUTHOR (A.Lajtai,P.P.Dyachenko,V.N.Kononov,E.A.Seregina) 41158 1 5 REFERENCE (J,NIM/A,293,555,1990) Data table is given 41158 1 6 #doi:10.1016/0168-9002(90)90323-X 41158 1 7 (C,88MITO,,737,1988) First author A.Lajtai. 41158 1 8 Preliminary publication. 41158 1 9 (R,INDC(NDS)-220,175,1989) 41158 1 10 The same data Table as in 88MITO. 41158 1 11 Preliminary publication. 41158 1 12 INSTITUTE (4ZZZDUB) Lajtai 41158 1 13 (4RUSFEI) Dyachenko (=D'yachenko), Kononov, Seregina 41158 1 14 DETECTOR (GLASD) Li-6 thin glass detector for neutrons 41158 1 15 Efficiency of 0.95 cm thick NE 912 glass neutron 41158 1 16 detector was determined independently by using 0.0835cm41158 1 17 thin glass detector as a reference, whose efficiency 41158 1 18 was determined by Monte Carlo calculations. 41158 1 19 (FISCH) For fission fragments . 41158 1 20 Filled with 90% Ar + 10% CO2 at 3 Torr. 41158 1 21 SAMPLE Cf-252 source of 10**4 fis/sec, 6mm diameter. 41158 1 22 METHOD (TOF) 30 cm flight path. 41158 1 23 Four series of measurements: with NE 912 and NE 913 41158 1 24 glass scintillators, both with and without shadow cone.41158 1 25 Total number of fission events 1.5*10**10 for each of 41158 1 26 four runs. 41158 1 27 MONITOR (3-LI-6(N,T)2-HE-4,,SIG) To determine thin detector 41158 1 28 efficiency. See MISC-COL in Subent 002. 41158 1 29 PART-DET (FF,N) 41158 1 30 CORRECTION For deviation of actual efficiencies from the 41158 1 31 efficiencies for pure Li-6(N,A) reaction. 41158 1 32 For time dependence of response function. 41158 1 33 For gamma-ray sensitivity of thick glass detector. 41158 1 34 For systematic accident coincidences at high counting 41158 1 35 rates. 41158 1 36 For backgrounds. 41158 1 37 For time resolution of TOF spectrometer. 41158 1 38 HISTORY (19940928C) + + compiled at the centre - CJD + + 41158 1 39 (20111219A) M.M. Upper -> lower case correction. 41158 1 40 Dates were corrected for 4-digits year. 41158 1 41 BIB information was added. 41158 1 42 (20120512A) DOI code was corrected in Subent 001 41158 1 43 according to WP2012-26 . 41158 1 44 (20220928A) Refs. C,88MITO,,737,1988 and 41158 1 45 R,INDC(NDS)-220,175,1989 were added. 41158 1 46 ENDBIB 44 0 41158 1 47 NOCOMMON 0 0 41158 1 48 ENDSUBENT 47 0 41158 199999 SUBENT 41158002 20220928 420841158 2 1 BIB 6 34 41158 2 2 REACTION (98-CF-252(0,F),PR,NU/DE,,REL) 41158 2 3 Spectrum in arbitrary units. Units are not given in 41158 2 4 Tables of articles. 41158 2 5 ANALYSIS Neutron spectrum was defined as: 41158 2 6 N(E)=P(E)/Nf*(solid angle)*(n detection efficiency), 41158 2 7 where Nf - number of detected fission events, 41158 2 8 P(E) - corrected neutron TOF spectrum transformed 41158 2 9 ( t -> E ) in energy spectrum. 41158 2 10 MISC-COL (MISC1) Detection efficiencies for thin NE 908 41158 2 11 (Monte Carlo calculation). 41158 2 12 (MISC2) Detection efficiencies for thick NE 912 41158 2 13 detector suspended in thin-wall Al chamber. 41158 2 14 (MISC3) Detection efficiencies for thick NE 912 41158 2 15 detector mounted on 56AVP multiplier. 41158 2 16 ERR-ANALYS (MISC2-ERR) Errors 41158 2 17 (MISC3-ERR) include: 41158 2 18 the statistical errors of the measurements, 41158 2 19 the accuracy of the Monte Carlo calculation of thin 41158 2 20 glass efficiency (less than 2%), 41158 2 21 the accuracy of the 6Li(n,a)T cross section. 41158 2 22 (ERR-T) Total error includes: 41158 2 23 (ERR-1) Error of the correction factor 41158 2 24 (ERR-2) Error of efficiency of ionization chamber 41158 2 25 (ERR-3) Error of determination of flight length and 41158 2 26 neutron solid angle 41158 2 27 STATUS (TABLE) Table 2 of J,NIM/A,293,555,1990 . 41158 2 28 Tables of C,88MITO,,737,1988 and 41158 2 29 R,INDC(NDS)-220,175,1989 - preliminary publications. 41158 2 30 .This Subent superseds Subent 40875.002 41158 2 31 HISTORY (20111219A) PR,DE,N,REL -> PR,NU/DE,,REL . 41158 2 32 MISC data (ratio of measured spectrum to Maxwellian 41158 2 33 one) were moved in Subent 003. 41158 2 34 Data of efficiencies were inserted as MISC1, MISC2, 41158 2 35 MISC3 (Table 1 of J,NIM/A,293,555,1990). 41158 2 36 ENDBIB 34 0 41158 2 37 COMMON 3 3 41158 2 38 ERR-1 ERR-2 ERR-3 41158 2 39 PER-CENT PER-CENT PER-CENT 41158 2 40 2. 3. 2. 41158 2 41 ENDCOMMON 3 0 41158 2 42 DATA 8 70 41158 2 43 E DATA ERR-T MISC1 MISC2 MISC2-ERR 41158 2 44 MISC3 MISC3-ERR 41158 2 45 KEV ARB-UNITS ARB-UNITS PER-CENT PER-CENT PER-CENT 41158 2 46 PER-CENT PER-CENT 41158 2 47 25. 3.530 0.478 0.145 1.748 0.043 41158 2 48 1.905 0.046 41158 2 49 35. 2.870 0.463 0.125 1.609 0.041 41158 2 50 1.744 0.045 41158 2 51 45. 4.406 0.477 0.113 1.505 0.036 41158 2 52 1.663 0.042 41158 2 53 55. 4.200 0.455 0.106 1.444 0.035 41158 2 54 1.550 0.041 41158 2 55 65. 4.435 0.443 0.101 1.389 0.032 41158 2 56 1.497 0.040 41158 2 57 75. 4.962 0.454 0.098 1.318 0.033 41158 2 58 1.414 0.039 41158 2 59 85. 4.834 0.427 0.097 1.305 0.032 41158 2 60 1.395 0.038 41158 2 61 95. 5.640 0.414 0.096 1.331 0.025 41158 2 62 1.397 0.039 41158 2 63 105. 5.688 0.391 0.098 1.341 0.031 41158 2 64 1.415 0.040 41158 2 65 115. 6.402 0.471 0.101 1.388 0.038 41158 2 66 1.477 0.048 41158 2 67 125. 7.032 0.470 0.106 1.459 0.045 41158 2 68 1.556 0.052 41158 2 69 135. 6.786 0.453 0.113 1.558 0.068 41158 2 70 1.658 0.078 41158 2 71 145. 6.495 0.424 0.123 1.672 0.081 41158 2 72 1.806 0.086 41158 2 73 155. 7.308 0.457 0.136 1.860 0.093 41158 2 74 2.025 0.101 41158 2 75 165. 7.140 0.438 0.155 2.103 0.098 41158 2 76 2.292 0.114 41158 2 77 175. 7.546 0.453 0.182 2.473 0.105 41158 2 78 2.475 0.147 41158 2 79 185. 7.545 0.445 0.217 2.919 0.138 41158 2 80 3.222 0.153 41158 2 81 195. 7.914 0.464 0.264 3.523 0.148 41158 2 82 3.832 0.211 41158 2 83 205. 7.674 0.448 0.319 4.264 0.213 41158 2 84 4.529 0.254 41158 2 85 215. 8.587 0.494 0.384 5.256 0.255 41158 2 86 5.690 0.350 41158 2 87 225. 7.354 0.423 0.448 5.887 0.278 41158 2 88 6.381 0.347 41158 2 89 235. 7.695 0.443 0.489 6.580 0.283 41158 2 90 6.628 0.346 41158 2 91 245. 7.749 0.445 0.495 6.641 0.345 41158 2 92 6.648 0.360 41158 2 93 255. 7.391 0.431 0.460 6.211 0.310 41158 2 94 6.330 0.322 41158 2 95 265. 8.167 0.466 0.403 5.497 0.264 41158 2 96 5.792 0.276 41158 2 97 275. 8.918 0.521 0.343 4.900 0.253 41158 2 98 4.924 0.263 41158 2 99 285. 8.907 0.534 0.289 4.257 0.226 41158 2 100 4.333 0.250 41158 2 101 295. 8.798 0.511 0.246 3.635 0.174 41158 2 102 3.712 0.203 41158 2 103 305. 8.538 0.499 0.211 3.208 0.149 41158 2 104 3.246 0.177 41158 2 105 315. 8.551 0.503 0.184 2.904 0.145 41158 2 106 3.116 0.151 41158 2 107 325. 8.984 0.528 0.163 2.585 0.140 41158 2 108 2.721 0.150 41158 2 109 335. 8.771 0.518 0.146 2.343 0.110 41158 2 110 2.470 0.142 41158 2 111 345. 8.454 0.505 0.131 2.147 0.109 41158 2 112 2.300 0.121 41158 2 113 355. 8.831 0.529 0.119 1.981 0.105 41158 2 114 2.120 0.118 41158 2 115 365. 9.357 0.560 0.110 1.848 0.105 41158 2 116 2.061 0.115 41158 2 117 375. 9.404 0.563 0.101 1.745 0.091 41158 2 118 1.930 0.111 41158 2 119 385. 9.075 0.549 0.095 1.679 0.083 41158 2 120 1.947 0.101 41158 2 121 395. 9.192 0.554 0.090 1.565 0.081 41158 2 122 1.886 0.098 41158 2 123 410. 9.577 0.560 0.084 1.495 0.079 41158 2 124 1.782 0.096 41158 2 125 430. 9.888 0.587 0.079 1.375 0.075 41158 2 126 1.698 0.081 41158 2 127 450. 9.393 0.550 0.075 1.313 0.071 41158 2 128 1.563 0.080 41158 2 129 470. 9.712 0.624 0.066 1.114 0.060 41158 2 130 1.337 0.072 41158 2 131 490. 9.362 0.564 0.059 1.001 0.055 41158 2 132 1.154 0.066 41158 2 133 510. 9.697 0.566 0.055 0.902 0.052 41158 2 134 1.056 0.065 41158 2 135 530. 9.889 0.598 0.053 0.844 0.049 41158 2 136 0.943 0.054 41158 2 137 550. 9.770 0.578 0.051 0.762 0.046 41158 2 138 0.859 0.053 41158 2 139 570. 9.711 0.580 0.049 0.736 0.044 41158 2 140 0.827 0.053 41158 2 141 590. 9.667 0.591 0.047 0.726 0.043 41158 2 142 0.776 0.052 41158 2 143 610. 9.982 0.614 0.046 0.684 0.041 41158 2 144 0.728 0.050 41158 2 145 630. 9.938 0.613 0.044 0.657 0.036 41158 2 146 0.686 0.048 41158 2 147 650. 10.020 0.626 0.043 0.633 0.035 41158 2 148 0.654 0.043 41158 2 149 670. 9.983 0.625 0.042 0.623 0.035 41158 2 150 0.643 0.042 41158 2 151 690. 9.924 0.653 0.041 0.605 0.033 41158 2 152 0.613 0.042 41158 2 153 710. 10.296 0.642 0.040 0.562 0.034 41158 2 154 0.584 0.042 41158 2 155 735. 10.467 0.646 0.038 0.540 0.033 41158 2 156 0.547 0.042 41158 2 157 765. 10.509 0.629 0.037 0.526 0.032 41158 2 158 0.533 0.042 41158 2 159 795. 10.032 0.625 0.038 0.543 0.032 41158 2 160 0.550 0.042 41158 2 161 825. 9.881 0.617 0.037 0.544 0.032 41158 2 162 0.557 0.041 41158 2 163 855. 9.970 0.626 0.036 0.538 0.031 41158 2 164 0.550 0.041 41158 2 165 885. 10.013 0.623 0.036 0.531 0.030 41158 2 166 0.543 0.040 41158 2 167 915. 9.768 0.616 0.035 0.531 0.030 41158 2 168 0.547 0.040 41158 2 169 945. 9.755 0.621 0.035 0.530 0.030 41158 2 170 0.537 0.041 41158 2 171 975. 9.597 0.592 0.035 0.533 0.029 41158 2 172 0.542 0.041 41158 2 173 1005. 9.516 0.590 0.035 0.535 0.029 41158 2 174 0.549 0.041 41158 2 175 1020. 9.401 0.587 0.035 0.529 0.030 41158 2 176 0.539 0.040 41158 2 177 1060. 9.864 0.608 0.034 0.528 0.028 41158 2 178 0.538 0.038 41158 2 179 1100. 9.822 0.621 0.033 0.510 0.027 41158 2 180 0.514 0.039 41158 2 181 1140. 9.985 0.618 0.033 0.515 0.028 41158 2 182 0.516 0.039 41158 2 183 1180. 9.486 0.590 0.033 0.512 0.027 41158 2 184 0.515 0.039 41158 2 185 1220. 9.820 0.603 0.033 0.511 0.027 41158 2 186 0.518 0.038 41158 2 187 ENDDATA 144 0 41158 2 188 ENDSUBENT 187 0 41158 299999 SUBENT 41158003 20220928 420841158 3 1 BIB 3 7 41158 3 2 REACTION (98-CF-252(0,F),PR,NU/DE,,MXD) 41158 3 3 STATUS (TABLE) Table 2 of J,NIM/A,293,555,1990 . 41158 3 4 (DEP,41158002) In Subent 002 - measured spectrum. 41158 3 5 Tables of C,88MITO,,737,1988 and 41158 3 6 R,INDC(NDS)-220,175,1989 - preliminary publications. 41158 3 7 .This Subent superseded Subent 40875.003 41158 3 8 HISTORY (20111219C) Data were moved from Subent 002. 41158 3 9 ENDBIB 7 0 41158 3 10 COMMON 1 3 41158 3 11 KT-NRM 41158 3 12 MEV 41158 3 13 1.42 41158 3 14 ENDCOMMON 3 0 41158 3 15 DATA 2 70 41158 3 16 E DATA 41158 3 17 KEV NO-DIM 41158 3 18 25. 1.140 41158 3 19 35. 0.790 41158 3 20 45. 1.075 41158 3 21 55. 0.934 41158 3 22 65. 0.913 41158 3 23 75. 0.958 41158 3 24 85. 0.883 41158 3 25 95. 0.981 41158 3 26 105. 0.948 41158 3 27 115. 1.028 41158 3 28 125. 1.089 41158 3 29 135. 1.018 41158 3 30 145. 0.947 41158 3 31 155. 1.038 41158 3 32 165. 0.990 41158 3 33 175. 1.023 41158 3 34 185. 1.002 41158 3 35 195. 1.031 41158 3 36 205. 0.979 41158 3 37 215. 1.080 41158 3 38 225. 0.911 41158 3 39 235. 0.939 41158 3 40 245. 0.933 41158 3 41 255. 0.879 41158 3 42 265. 0.959 41158 3 43 275. 1.035 41158 3 44 285. 1.022 41158 3 45 295. 1.000 41158 3 46 305. 0.961 41158 3 47 315. 0.954 41158 3 48 325. 0.994 41158 3 49 335. 0.962 41158 3 50 345. 0.920 41158 3 51 355. 0.954 41158 3 52 365. 1.004 41158 3 53 375. 1.003 41158 3 54 385. 0.962 41158 3 55 395. 0.970 41158 3 56 410. 1.001 41158 3 57 430. 1.024 41158 3 58 450. 0.964 41158 3 59 470. 0.989 41158 3 60 490. 0.947 41158 3 61 510. 0.975 41158 3 62 530. 0.989 41158 3 63 550. 0.976 41158 3 64 570. 0.963 41158 3 65 590. 0.955 41158 3 66 610. 0.985 41158 3 67 630. 0.978 41158 3 68 650. 0.985 41158 3 69 670. 0.980 41158 3 70 690. 0.974 41158 3 71 710. 1.011 41158 3 72 735. 1.028 41158 3 73 765. 1.033 41158 3 74 795. 0.988 41158 3 75 825. 0.976 41158 3 76 855. 0.988 41158 3 77 885. 0.996 41158 3 78 915. 0.974 41158 3 79 945. 0.978 41158 3 80 975. 0.969 41158 3 81 1005. 0.966 41158 3 82 1020. 0.958 41158 3 83 1060. 1.014 41158 3 84 1100. 1.019 41158 3 85 1140. 1.046 41158 3 86 1180. 1.005 41158 3 87 1220. 1.053 41158 3 88 ENDDATA 72 0 41158 3 89 ENDSUBENT 88 0 41158 399999 ENDENTRY 3 0 4115899999999