ENTRY 41158 20220928 42084115800000001 SUBENT 41158001 20220928 42084115800100001 BIB 11 44 4115800100002 TITLE Low-energy neutron spectrometer and its application 4115800100003 for Cf-252 neutron spectrum measurements. 4115800100004 AUTHOR (A.Lajtai,P.P.Dyachenko,V.N.Kononov,E.A.Seregina) 4115800100005 REFERENCE (J,NIM/A,293,555,1990) Data table is given 4115800100006 #doi:10.1016/0168-9002(90)90323-X 4115800100007 (C,88MITO,,737,1988) First author A.Lajtai. 4115800100008 Preliminary publication. 4115800100009 (R,INDC(NDS)-220,175,1989) 4115800100010 The same data Table as in 88MITO. 4115800100011 Preliminary publication. 4115800100012 INSTITUTE (4ZZZDUB) Lajtai 4115800100013 (4RUSFEI) Dyachenko (=D'yachenko), Kononov, Seregina 4115800100014 DETECTOR (GLASD) Li-6 thin glass detector for neutrons 4115800100015 Efficiency of 0.95 cm thick NE 912 glass neutron 4115800100016 detector was determined independently by using 0.0835cm4115800100017 thin glass detector as a reference, whose efficiency 4115800100018 was determined by Monte Carlo calculations. 4115800100019 (FISCH) For fission fragments . 4115800100020 Filled with 90% Ar + 10% CO2 at 3 Torr. 4115800100021 SAMPLE Cf-252 source of 10**4 fis/sec, 6mm diameter. 4115800100022 METHOD (TOF) 30 cm flight path. 4115800100023 Four series of measurements: with NE 912 and NE 913 4115800100024 glass scintillators, both with and without shadow cone.4115800100025 Total number of fission events 1.5*10**10 for each of 4115800100026 four runs. 4115800100027 MONITOR (3-LI-6(N,T)2-HE-4,,SIG) To determine thin detector 4115800100028 efficiency. See MISC-COL in Subent 002. 4115800100029 PART-DET (FF,N) 4115800100030 CORRECTION For deviation of actual efficiencies from the 4115800100031 efficiencies for pure Li-6(N,A) reaction. 4115800100032 For time dependence of response function. 4115800100033 For gamma-ray sensitivity of thick glass detector. 4115800100034 For systematic accident coincidences at high counting 4115800100035 rates. 4115800100036 For backgrounds. 4115800100037 For time resolution of TOF spectrometer. 4115800100038 HISTORY (19940928C) + + compiled at the centre - CJD + + 4115800100039 (20111219A) M.M. Upper -> lower case correction. 4115800100040 Dates were corrected for 4-digits year. 4115800100041 BIB information was added. 4115800100042 (20120512A) DOI code was corrected in Subent 001 4115800100043 according to WP2012-26 . 4115800100044 (20220928A) Refs. C,88MITO,,737,1988 and 4115800100045 R,INDC(NDS)-220,175,1989 were added. 4115800100046 ENDBIB 44 0 4115800100047 NOCOMMON 0 0 4115800100048 ENDSUBENT 47 0 4115800199999 SUBENT 41158002 20220928 42084115800200001 BIB 6 34 4115800200002 REACTION (98-CF-252(0,F),PR,NU/DE,,REL) 4115800200003 Spectrum in arbitrary units. Units are not given in 4115800200004 Tables of articles. 4115800200005 ANALYSIS Neutron spectrum was defined as: 4115800200006 N(E)=P(E)/Nf*(solid angle)*(n detection efficiency), 4115800200007 where Nf - number of detected fission events, 4115800200008 P(E) - corrected neutron TOF spectrum transformed 4115800200009 ( t -> E ) in energy spectrum. 4115800200010 MISC-COL (MISC1) Detection efficiencies for thin NE 908 4115800200011 (Monte Carlo calculation). 4115800200012 (MISC2) Detection efficiencies for thick NE 912 4115800200013 detector suspended in thin-wall Al chamber. 4115800200014 (MISC3) Detection efficiencies for thick NE 912 4115800200015 detector mounted on 56AVP multiplier. 4115800200016 ERR-ANALYS (MISC2-ERR) Errors 4115800200017 (MISC3-ERR) include: 4115800200018 the statistical errors of the measurements, 4115800200019 the accuracy of the Monte Carlo calculation of thin 4115800200020 glass efficiency (less than 2%), 4115800200021 the accuracy of the 6Li(n,a)T cross section. 4115800200022 (ERR-T) Total error includes: 4115800200023 (ERR-1) Error of the correction factor 4115800200024 (ERR-2) Error of efficiency of ionization chamber 4115800200025 (ERR-3) Error of determination of flight length and 4115800200026 neutron solid angle 4115800200027 STATUS (TABLE) Table 2 of J,NIM/A,293,555,1990 . 4115800200028 Tables of C,88MITO,,737,1988 and 4115800200029 R,INDC(NDS)-220,175,1989 - preliminary publications. 4115800200030 .This Subent superseds Subent 40875.002 4115800200031 HISTORY (20111219A) PR,DE,N,REL -> PR,NU/DE,,REL . 4115800200032 MISC data (ratio of measured spectrum to Maxwellian 4115800200033 one) were moved in Subent 003. 4115800200034 Data of efficiencies were inserted as MISC1, MISC2, 4115800200035 MISC3 (Table 1 of J,NIM/A,293,555,1990). 4115800200036 ENDBIB 34 0 4115800200037 COMMON 3 3 4115800200038 ERR-1 ERR-2 ERR-3 4115800200039 PER-CENT PER-CENT PER-CENT 4115800200040 2. 3. 2. 4115800200041 ENDCOMMON 3 0 4115800200042 DATA 8 70 4115800200043 E DATA ERR-T MISC1 MISC2 MISC2-ERR 4115800200044 MISC3 MISC3-ERR 4115800200045 KEV ARB-UNITS ARB-UNITS PER-CENT PER-CENT PER-CENT 4115800200046 PER-CENT PER-CENT 4115800200047 25. 3.530 0.478 0.145 1.748 0.043 4115800200048 1.905 0.046 4115800200049 35. 2.870 0.463 0.125 1.609 0.041 4115800200050 1.744 0.045 4115800200051 45. 4.406 0.477 0.113 1.505 0.036 4115800200052 1.663 0.042 4115800200053 55. 4.200 0.455 0.106 1.444 0.035 4115800200054 1.550 0.041 4115800200055 65. 4.435 0.443 0.101 1.389 0.032 4115800200056 1.497 0.040 4115800200057 75. 4.962 0.454 0.098 1.318 0.033 4115800200058 1.414 0.039 4115800200059 85. 4.834 0.427 0.097 1.305 0.032 4115800200060 1.395 0.038 4115800200061 95. 5.640 0.414 0.096 1.331 0.025 4115800200062 1.397 0.039 4115800200063 105. 5.688 0.391 0.098 1.341 0.031 4115800200064 1.415 0.040 4115800200065 115. 6.402 0.471 0.101 1.388 0.038 4115800200066 1.477 0.048 4115800200067 125. 7.032 0.470 0.106 1.459 0.045 4115800200068 1.556 0.052 4115800200069 135. 6.786 0.453 0.113 1.558 0.068 4115800200070 1.658 0.078 4115800200071 145. 6.495 0.424 0.123 1.672 0.081 4115800200072 1.806 0.086 4115800200073 155. 7.308 0.457 0.136 1.860 0.093 4115800200074 2.025 0.101 4115800200075 165. 7.140 0.438 0.155 2.103 0.098 4115800200076 2.292 0.114 4115800200077 175. 7.546 0.453 0.182 2.473 0.105 4115800200078 2.475 0.147 4115800200079 185. 7.545 0.445 0.217 2.919 0.138 4115800200080 3.222 0.153 4115800200081 195. 7.914 0.464 0.264 3.523 0.148 4115800200082 3.832 0.211 4115800200083 205. 7.674 0.448 0.319 4.264 0.213 4115800200084 4.529 0.254 4115800200085 215. 8.587 0.494 0.384 5.256 0.255 4115800200086 5.690 0.350 4115800200087 225. 7.354 0.423 0.448 5.887 0.278 4115800200088 6.381 0.347 4115800200089 235. 7.695 0.443 0.489 6.580 0.283 4115800200090 6.628 0.346 4115800200091 245. 7.749 0.445 0.495 6.641 0.345 4115800200092 6.648 0.360 4115800200093 255. 7.391 0.431 0.460 6.211 0.310 4115800200094 6.330 0.322 4115800200095 265. 8.167 0.466 0.403 5.497 0.264 4115800200096 5.792 0.276 4115800200097 275. 8.918 0.521 0.343 4.900 0.253 4115800200098 4.924 0.263 4115800200099 285. 8.907 0.534 0.289 4.257 0.226 4115800200100 4.333 0.250 4115800200101 295. 8.798 0.511 0.246 3.635 0.174 4115800200102 3.712 0.203 4115800200103 305. 8.538 0.499 0.211 3.208 0.149 4115800200104 3.246 0.177 4115800200105 315. 8.551 0.503 0.184 2.904 0.145 4115800200106 3.116 0.151 4115800200107 325. 8.984 0.528 0.163 2.585 0.140 4115800200108 2.721 0.150 4115800200109 335. 8.771 0.518 0.146 2.343 0.110 4115800200110 2.470 0.142 4115800200111 345. 8.454 0.505 0.131 2.147 0.109 4115800200112 2.300 0.121 4115800200113 355. 8.831 0.529 0.119 1.981 0.105 4115800200114 2.120 0.118 4115800200115 365. 9.357 0.560 0.110 1.848 0.105 4115800200116 2.061 0.115 4115800200117 375. 9.404 0.563 0.101 1.745 0.091 4115800200118 1.930 0.111 4115800200119 385. 9.075 0.549 0.095 1.679 0.083 4115800200120 1.947 0.101 4115800200121 395. 9.192 0.554 0.090 1.565 0.081 4115800200122 1.886 0.098 4115800200123 410. 9.577 0.560 0.084 1.495 0.079 4115800200124 1.782 0.096 4115800200125 430. 9.888 0.587 0.079 1.375 0.075 4115800200126 1.698 0.081 4115800200127 450. 9.393 0.550 0.075 1.313 0.071 4115800200128 1.563 0.080 4115800200129 470. 9.712 0.624 0.066 1.114 0.060 4115800200130 1.337 0.072 4115800200131 490. 9.362 0.564 0.059 1.001 0.055 4115800200132 1.154 0.066 4115800200133 510. 9.697 0.566 0.055 0.902 0.052 4115800200134 1.056 0.065 4115800200135 530. 9.889 0.598 0.053 0.844 0.049 4115800200136 0.943 0.054 4115800200137 550. 9.770 0.578 0.051 0.762 0.046 4115800200138 0.859 0.053 4115800200139 570. 9.711 0.580 0.049 0.736 0.044 4115800200140 0.827 0.053 4115800200141 590. 9.667 0.591 0.047 0.726 0.043 4115800200142 0.776 0.052 4115800200143 610. 9.982 0.614 0.046 0.684 0.041 4115800200144 0.728 0.050 4115800200145 630. 9.938 0.613 0.044 0.657 0.036 4115800200146 0.686 0.048 4115800200147 650. 10.020 0.626 0.043 0.633 0.035 4115800200148 0.654 0.043 4115800200149 670. 9.983 0.625 0.042 0.623 0.035 4115800200150 0.643 0.042 4115800200151 690. 9.924 0.653 0.041 0.605 0.033 4115800200152 0.613 0.042 4115800200153 710. 10.296 0.642 0.040 0.562 0.034 4115800200154 0.584 0.042 4115800200155 735. 10.467 0.646 0.038 0.540 0.033 4115800200156 0.547 0.042 4115800200157 765. 10.509 0.629 0.037 0.526 0.032 4115800200158 0.533 0.042 4115800200159 795. 10.032 0.625 0.038 0.543 0.032 4115800200160 0.550 0.042 4115800200161 825. 9.881 0.617 0.037 0.544 0.032 4115800200162 0.557 0.041 4115800200163 855. 9.970 0.626 0.036 0.538 0.031 4115800200164 0.550 0.041 4115800200165 885. 10.013 0.623 0.036 0.531 0.030 4115800200166 0.543 0.040 4115800200167 915. 9.768 0.616 0.035 0.531 0.030 4115800200168 0.547 0.040 4115800200169 945. 9.755 0.621 0.035 0.530 0.030 4115800200170 0.537 0.041 4115800200171 975. 9.597 0.592 0.035 0.533 0.029 4115800200172 0.542 0.041 4115800200173 1005. 9.516 0.590 0.035 0.535 0.029 4115800200174 0.549 0.041 4115800200175 1020. 9.401 0.587 0.035 0.529 0.030 4115800200176 0.539 0.040 4115800200177 1060. 9.864 0.608 0.034 0.528 0.028 4115800200178 0.538 0.038 4115800200179 1100. 9.822 0.621 0.033 0.510 0.027 4115800200180 0.514 0.039 4115800200181 1140. 9.985 0.618 0.033 0.515 0.028 4115800200182 0.516 0.039 4115800200183 1180. 9.486 0.590 0.033 0.512 0.027 4115800200184 0.515 0.039 4115800200185 1220. 9.820 0.603 0.033 0.511 0.027 4115800200186 0.518 0.038 4115800200187 ENDDATA 144 0 4115800200188 ENDSUBENT 187 0 4115800299999 SUBENT 41158003 20220928 42084115800300001 BIB 3 7 4115800300002 REACTION (98-CF-252(0,F),PR,NU/DE,,MXD) 4115800300003 STATUS (TABLE) Table 2 of J,NIM/A,293,555,1990 . 4115800300004 (DEP,41158002) In Subent 002 - measured spectrum. 4115800300005 Tables of C,88MITO,,737,1988 and 4115800300006 R,INDC(NDS)-220,175,1989 - preliminary publications. 4115800300007 .This Subent superseded Subent 40875.003 4115800300008 HISTORY (20111219C) Data were moved from Subent 002. 4115800300009 ENDBIB 7 0 4115800300010 COMMON 1 3 4115800300011 KT-NRM 4115800300012 MEV 4115800300013 1.42 4115800300014 ENDCOMMON 3 0 4115800300015 DATA 2 70 4115800300016 E DATA 4115800300017 KEV NO-DIM 4115800300018 25. 1.140 4115800300019 35. 0.790 4115800300020 45. 1.075 4115800300021 55. 0.934 4115800300022 65. 0.913 4115800300023 75. 0.958 4115800300024 85. 0.883 4115800300025 95. 0.981 4115800300026 105. 0.948 4115800300027 115. 1.028 4115800300028 125. 1.089 4115800300029 135. 1.018 4115800300030 145. 0.947 4115800300031 155. 1.038 4115800300032 165. 0.990 4115800300033 175. 1.023 4115800300034 185. 1.002 4115800300035 195. 1.031 4115800300036 205. 0.979 4115800300037 215. 1.080 4115800300038 225. 0.911 4115800300039 235. 0.939 4115800300040 245. 0.933 4115800300041 255. 0.879 4115800300042 265. 0.959 4115800300043 275. 1.035 4115800300044 285. 1.022 4115800300045 295. 1.000 4115800300046 305. 0.961 4115800300047 315. 0.954 4115800300048 325. 0.994 4115800300049 335. 0.962 4115800300050 345. 0.920 4115800300051 355. 0.954 4115800300052 365. 1.004 4115800300053 375. 1.003 4115800300054 385. 0.962 4115800300055 395. 0.970 4115800300056 410. 1.001 4115800300057 430. 1.024 4115800300058 450. 0.964 4115800300059 470. 0.989 4115800300060 490. 0.947 4115800300061 510. 0.975 4115800300062 530. 0.989 4115800300063 550. 0.976 4115800300064 570. 0.963 4115800300065 590. 0.955 4115800300066 610. 0.985 4115800300067 630. 0.978 4115800300068 650. 0.985 4115800300069 670. 0.980 4115800300070 690. 0.974 4115800300071 710. 1.011 4115800300072 735. 1.028 4115800300073 765. 1.033 4115800300074 795. 0.988 4115800300075 825. 0.976 4115800300076 855. 0.988 4115800300077 885. 0.996 4115800300078 915. 0.974 4115800300079 945. 0.978 4115800300080 975. 0.969 4115800300081 1005. 0.966 4115800300082 1020. 0.958 4115800300083 1060. 1.014 4115800300084 1100. 1.019 4115800300085 1140. 1.046 4115800300086 1180. 1.005 4115800300087 1220. 1.053 4115800300088 ENDDATA 72 0 4115800300089 ENDSUBENT 88 0 4115800399999 ENDENTRY 3 0 4115899999999