ENTRY 13169 20200928 14731316900000001 SUBENT 13169001 20200928 14731316900100001 BIB 9 17 1316900100002 TITLE A search for possible structure in the 238U(n,f) 1316900100003 cross section near 2.3 MeV 1316900100004 AUTHOR (J.W.Meadows, D.L.Smith, L.P.Geraldo) 1316900100005 INSTITUTE (1USAANL) 1316900100006 REFERENCE (J,ANE,16,471,1989) 1316900100007 FACILITY (DYNAM,1USAANL) Argonne 8-MeV Tandem Dynamitron 1316900100008 INC-SOURCE (P-LI7) Li metal evaporated onto a 0.25-mm thick 1316900100009 Ta plate irradiated by protons 1316900100010 SAMPLE - One Hydrated oxide sample (1.946 g), 1316900100011 238U (100.0%), 235U (<0.6 ppm) 1316900100012 - Three U3O8 samples (1.180 g, 1.699 g, 0.439 g), 1316900100013 238U (96.49%), 234U (1.012%), 235U (2.369%), 1316900100014 236U (0.0001%). 1316900100015 - Two Np2O3 samples (1.775g, 0.656 g) 1316900100016 STATUS (APRVD) J.W.Meadows, 1989/11/20 1316900100017 HISTORY (19891031C) 1316900100018 (20200928A) On. Major rev.in 002, correction in 003. 1316900100019 ENDBIB 17 0 1316900100020 NOCOMMON 0 0 1316900100021 ENDSUBENT 20 0 1316900199999 SUBENT 13169002 20200928 14731316900200001 BIB 7 25 1316900200002 REACTION 1((92-U-238(N,F),,SIG)/(93-NP-237(N,F),,SIG)) 1316900200003 2(92-U-238(N,F),,SIG) 1316900200004 ANALYSIS Average of three measurements 1316900200005 MONITOR 1Absolute ratio measurement 1316900200006 2(93-NP-237(N,F),,SIG) 1316900200007 Taken from ENDF/B-V (1979,1981) 1316900200008 COVARIANCE (XY,2,EN,MEV) 1316900200009 2.15 2.453 1316900200010 (Z,3,COR,PER-CENT) 1316900200011 100 1316900200012 70 100 1316900200013 ERR-ANALYS (ERR-T) Total uncertainty propagated from 1316900200014 - uncorrelated error 1316900200015 - thickness correction - sample 1316900200016 - extrapolation correction - sample 1316900200017 - 234U and 238U half-life 1316900200018 - 238U isotopic analysis 1316900200019 - alpha-count 1316900200020 (ERR-1,,,F) Thickness correction - method (0.3%) 1316900200021 (ERR-2,,,F) Extrapolation correction - method (0.3%) 1316900200022 (ERR-3,,,F) Scattering correction (0.3%) 1316900200023 (ERR-4,,,F) Half-life of 237Np (0.47%) 1316900200024 STATUS (TABLE) Table 3 of Ann.Nucl.Energy 16(1989)471 1316900200025 HISTORY (20200928A) On. COVARIANCE added. ERR-ANALYS revised. 1316900200026 EN-RSL-HW -> EN-RSL-FW. 1316900200027 ENDBIB 25 0 1316900200028 COMMON 4 3 1316900200029 ERR-1 ERR-2 ERR-3 ERR-4 1316900200030 PER-CENT PER-CENT PER-CENT PER-CENT 1316900200031 0.3 0.3 0.3 0.47 1316900200032 ENDCOMMON 3 0 1316900200033 DATA 5 2 1316900200034 EN EN-RSL-FW DATA 1DATA 2ERR-T 1316900200035 MEV MEV NO-DIM B PER-CENT 1316900200036 2.15 0.112 0.3190 0.5390 1.36 1316900200037 2.453 0.106 0.3256 0.5529 1.00 1316900200038 ENDDATA 4 0 1316900200039 ENDSUBENT 38 0 1316900299999 SUBENT 13169003 20200928 14731316900300001 BIB 5 10 1316900300002 REACTION 1((92-U-238(N,F),,SIG)/(93-NP-237(N,F),,SIG)) 1316900300003 2(92-U-238(N,F),,SIG) 1316900300004 MONITOR 1Shape measurement normalized to absolute ratio 1316900300005 measurements at 2.15 and 2.453 MeV 1316900300006 2(93-NP-237(N,F),,SIG) 1316900300007 Taken from ENDF/B-V (1979,1981) 1316900300008 ERR-ANALYS (ERR-S) Statistical uncertainty 1316900300009 STATUS (TABLE) Table 4 of Ann.Nucl.Energy 16(1989)471 1316900300010 HISTORY (20200928A) On. The pointer of ERR-S removed. 1316900300011 EN-RSL-HW -> EN-RSL-FW. 1316900300012 ENDBIB 10 0 1316900300013 NOCOMMON 0 0 1316900300014 DATA 5 42 1316900300015 EN EN-RSL-FW DATA 1DATA 2ERR-S 1316900300016 MEV MEV NO-DIM B PER-CENT 1316900300017 1.920 0.023 0.3121 0.5181 0.77 1316900300018 1.938 0.024 0.3131 0.5204 0.81 1316900300019 1.957 0.027 0.3184 0.5298 0.73 1316900300020 1.976 0.030 0.3112 0.5195 0.74 1316900300021 1.995 0.031 0.3104 0.5178 1.11 1316900300022 1.999 0.022 0.3106 0.5187 0.92 1316900300023 2.019 0.022 0.3155 0.5274 0.74 1316900300024 2.038 0.023 0.3109 0.5202 0.74 1316900300025 2.058 0.023 0.3152 0.5327 0.74 1316900300026 2.077 0.026 0.3152 0.5286 0.73 1316900300027 2.096 0.027 0.3216 0.5399 0.74 1316900300028 2.116 0.028 0.3202 0.5383 0.81 1316900300029 2.139 0.022 0.3183 0.5360 0.77 1316900300030 2.158 0.025 0.3240 0.5466 0.76 1316900300031 2.177 0.024 0.3241 0.5471 0.76 1316900300032 2.196 0.027 0.3205 0.5417 0.76 1316900300033 2.216 0.028 0.3281 0.5546 0.76 1316900300034 2.218 0.023 0.3206 0.5418 0.76 1316900300035 2.235 0.029 0.3272 0.5533 0.77 1316900300036 2.239 0.023 0.3227 0.5459 0.76 1316900300037 2.260 0.018 0.3250 0.5499 0.74 1316900300038 2.278 0.024 0.3222 0.5451 0.77 1316900300039 2.280 0.020 0.3218 0.5444 0.73 1316900300040 2.290 0.021 0.3141 0.5312 0.74 1316900300041 2.297 0.025 0.3230 0.5465 0.75 1316900300042 2.307 0.024 0.3241 0.5486 0.76 1316900300043 2.319 0.022 0.3228 0.5464 0.76 1316900300044 2.319 0.022 0.3235 0.5476 0.77 1316900300045 2.336 0.026 0.3237 0.5481 0.74 1316900300046 2.337 0.023 0.3224 0.5458 0.76 1316900300047 2.356 0.026 0.3256 0.5507 0.89 1316900300048 2.359 0.020 0.3215 0.5446 1.30 1316900300049 2.380 0.020 0.3216 0.5448 0.76 1316900300050 2.398 0.022 0.3256 0.5519 0.77 1316900300051 2.420 0.018 0.3247 0.5523 0.74 1316900300052 2.438 0.021 0.3206 0.5435 0.76 1316900300053 2.458 0.023 0.3222 0.5465 0.82 1316900300054 2.479 0.019 0.3245 0.5503 0.75 1316900300055 2.499 0.020 0.3238 0.5495 0.75 1316900300056 2.518 0.019 0.3232 0.5489 0.75 1316900300057 2.538 0.023 0.3225 0.5476 0.75 1316900300058 2.558 0.021 0.3248 0.5514 0.91 1316900300059 ENDDATA 44 0 1316900300060 ENDSUBENT 59 0 1316900399999 ENDENTRY 3 0 1316999999999