ENTRY 10558 20201130 14751055800000001 SUBENT 10558001 20201130 14751055800100001 BIB 11 22 1055800100002 TITLE Fission cross section of uranium-235 from 0.8 to 4 MeV 1055800100003 AUTHOR (J.B.Czirr, G.S.Sidhu) 1055800100004 INSTITUTE (1USALRL) 1055800100005 REFERENCE (J,NSE,58,371,1975) 1055800100006 REL-REF (M,10428001,J.B.Czirr+,J,NSE,57,18,1975) 1055800100007 Details of measurements and corrections 1055800100008 FACILITY (LINAC,1USALRL) Electron linear accelerator 1055800100009 INC-SOURCE (PHOTO) Electron on tantalum-water target 1055800100010 METHOD (TOF) 1055800100011 DETECTOR (FISCH) Parallel-plate fission chamber 1055800100012 (SILI) proton recoil detector with CH2 radiator 1055800100013 CORRECTION Corrected for 1055800100014 - time-shift versus pulse height, 1055800100015 - (n,p)-scattering angular distribution, 1055800100016 - dead time, 1055800100017 - flux perturbation. 1055800100018 Not corrected for 1055800100019 - fission-fragment angular distribution. 1055800100020 HISTORY (19751208C) 1055800100021 (19830914A) Converted to REACTION formalism 1055800100022 (20040517A) Converted to new date formats, lower case. 1055800100023 (20201130A) On. MONITOR moved to 002 and revised. 1055800100024 ENDBIB 22 0 1055800100025 NOCOMMON 0 0 1055800100026 ENDSUBENT 25 0 1055800199999 SUBENT 10558002 20201130 14751055800200001 BIB 7 23 1055800200002 REACTION 1(92-U-235(N,F),,SIG,,REL) 1055800200003 2(92-U-235(N,F),,SIG) 1055800200004 MONITOR (1-H-1(N,EL)1-H-1,,SIG) 1055800200005 1Average between 3 and 4 MeV normalized to 1.0 1055800200006 2((MONIT)92-U-235(N,F),,SIG) 1055800200007 MONIT-REF (,L.Stewart+,R,LA-4574,1971) n-p cross section 1055800200008 2((MONIT)10333001,W.P.Poenitz,J,NSE,53,370,1974) 1055800200009 ERR-ANALYS (ERR-S) Statistical uncertainty (standard deviation) 1055800200010 (ERR-1) Systematic uncertainty (rms) includes errors 1055800200011 due to 1055800200012 - pulse height versus time shift 1055800200013 - (n,p) angular distribution 1055800200014 - fission-chamber efficiency v.s. time-of-flight 1055800200015 - dead-time correction 1055800200016 - flux perturbation 1055800200017 - background (fission chamber and flux monitor) 1055800200018 - absolute energy scale 1055800200019 2(ERR-2) Normalization error (2.4%) 1055800200020 FLAG (1.) Systematic uncertainty negligible 1055800200021 STATUS (TABLE) Table I of Nucl.Sci.Eng.58(1975)371 1055800200022 HISTORY (20040517A) Error, monitor headings updated. 1055800200023 (20201130A) On. EN-NRM -> EN-NRM-MIN/MAX. 1055800200024 ERR-SYS -> ERR-1 and ERR-1 -> ERR-2 1055800200025 ENDBIB 23 0 1055800200026 COMMON 4 3 1055800200027 EN-NRM-MIN2EN-NRM-MAX2MONIT 2ERR-2 2 1055800200028 MEV MEV MB PER-CENT 1055800200029 3. 4. 1198. 2.4 1055800200030 ENDCOMMON 3 0 1055800200031 DATA 6 27 1055800200032 EN DATA 1DATA 2ERR-S ERR-1 FLAG 1055800200033 MEV ARB-UNITS B PER-CENT PER-CENT NO-DIM 1055800200034 0.754 0.902 1.08 1.0 0.5 1055800200035 0.786 0.915 1.10 1.0 0.5 1055800200036 0.819 0.909 1.09 0.8 0.5 1055800200037 0.855 0.932 1.12 0.8 0.5 1055800200038 0.894 0.971 1.16 0.8 0.5 1055800200039 0.935 0.980 1.17 0.8 0.5 1055800200040 0.979 1.014 1.21 0.8 0.5 1055800200041 1.026 1.020 1.22 0.8 0.5 1055800200042 1.077 0.999 1.20 0.8 0.5 1055800200043 1.132 1.020 1.22 0.8 0.5 1055800200044 1.191 1.033 1.24 0.8 0.4 1055800200045 1.254 1.011 1.21 0.8 0.4 1055800200046 1.323 1.016 1.22 0.8 0.4 1055800200047 1.398 1.028 1.23 0.8 0.4 1055800200048 1.479 1.038 1.24 1.0 0.4 1055800200049 1.568 1.046 1.25 0.8 0.4 1055800200050 1.665 1.060 1.27 0.9 0.4 1055800200051 1.771 1.050 1.26 0.9 0.4 1055800200052 1.887 1.068 1.28 0.9 0.4 1055800200053 2.015 1.081 1.30 1.0 0.4 1055800200054 2.157 1.069 1.28 1.0 0.4 1055800200055 2.315 1.063 1.27 1.1 0.4 1055800200056 2.490 1.055 1.26 1.2 0.4 1055800200057 3.156 1.019 1.22 1.4 1. 1055800200058 3.438 0.998 1.20 1.5 1. 1055800200059 3.759 0.989 1.18 1.5 1. 1055800200060 4.129 0.959 1.15 1.6 1. 1055800200061 ENDDATA 29 0 1055800200062 ENDSUBENT 61 0 1055800299999 ENDENTRY 2 0 1055899999999