ENTRY 21197 20230516 2119700000001 SUBENT 21197001 20230516 20231011 2119700100001 BIB 11 31 2119700100002 TITLE The energy dependence of the fission-neutron yield per 2119700100003 neutron absorbed in U-233 over the range 0.025- 2.2 eV 2119700100004 AUTHOR (J.E.Sanders,H.M.Skarsgard,C.J.Kenward) 2119700100005 REFERENCE (J,JNE,5,186,1957) 2119700100006 (R,AERE-NP/R-2076,7,1957) abst. 2119700100007 INSTITUTE (2UK HAR) 2119700100008 FACILITY (REAC,2UK HAR) BEPO reactor 2119700100009 (SPECC,2UK HAR) K-Cl or Cu crystal. 2119700100010 SAMPLE Metallic U-233 discs, isotopic purity 99.3%, 2119700100011 2 inch in diameter and 3 to 5 mm thick. 2119700100012 METHOD Detection of emitted fission neutrons. 2119700100013 DETECTOR (BF3) 16 BF-3 counters embedded in paraffin wax 2119700100014 arranged cylindrically round the sample. 2119700100015 (PROPC) Proportional counter containing boron foils 2119700100016 to monitor flux. 2119700100017 CORRECTION Corrections made for- 2119700100018 higher order reflections from the crystal, correction 2119700100019 did not exceed 5%. 2119700100020 Transmission of U-233 disc less than 2.1%. 2119700100021 Scattering by U-233 disc causing neutron loss from 2119700100022 the sample, less than 1.6%. 2119700100023 Correction of less than 3.6% to allow for 2119700100024 neutron absorption in Cu can containing the sample. 2119700100025 Variation with energy of neutron absorption in B-10 2119700100026 monitor counter, less than 0.9%. 2119700100027 Fast fission multiplication in neutron disc, less 2119700100028 than 1%. 2119700100029 STATUS (NDD) From NEUDADA. 2119700100030 HISTORY (19791128T) 2119700100031 (20230516A) SD:Updated to new date formats,lower case. 2119700100032 Corrections in all Subents. 2119700100033 ENDBIB 31 0 2119700100034 NOCOMMON 0 0 2119700100035 ENDSUBENT 34 0 2119700199999 SUBENT 21197002 20230516 20231011 2119700200001 BIB 5 16 2119700200002 REACTION ((94-PU-239(N,ABS),,ETA)//(94-PU-239(N,ABS),,ETA)) 2119700200003 REL-REF (N,,J.A.Harvey+,B,PR.NUC.EN.,1,1,1956) Chapter I. 2119700200004 (N,,H.Palevsky,C,55GENEVA,4,311,1955) 2119700200005 The Harwell measurements have been normalized to the 2119700200006 Brookhaven data (Palevsky) over the range 0.05-0.10 eV,2119700200007 these in turn being referred to an average thermal eta 2119700200008 value of 2.29 (J.A.Harvey, see REL-REF). 2119700200009 ERR-ANALYS The errors indicated on fig.3 have been computed by 2119700200010 combining the counting standard deviation with the 2119700200011 estimation of the errors in each of the corrections 2119700200012 applied (that for higher order reflection being the 2119700200013 most important). 2119700200014 STATUS Data given as 17 points for K-Cl neutrons and 13 points2119700200015 for Cu neutrons in fig.3 of the J.Nucl.En.,5(1957)186 2119700200016 HISTORY (20230516A) SD: Reaction code corrected and presented 2119700200017 as reaction ratio. 2119700200018 ENDBIB 16 0 2119700200019 COMMON 1 3 2119700200020 EN-DN 2119700200021 EV 2119700200022 0.0253 2119700200023 ENDCOMMON 3 0 2119700200024 DATA 2 27 2119700200025 EN-NM DATA 2119700200026 EV NO-DIM 2119700200027 4.800E-02 2.315 2119700200028 5.800E-02 2.278 2119700200029 6.800E-02 2.285 2119700200030 8.300E-02 2.285 2119700200031 1.000E-01 2.255 2119700200032 1.350E-01 2.235 2119700200033 1.410E-01 2.250 2119700200034 1.900E-01 2.250 2119700200035 2.500E-01 2.283 2119700200036 3.340E-01 2.250 2119700200037 4.300E-01 2.280 2119700200038 4.300E-01 2.320 2119700200039 6.300E-01 2.268 2119700200040 6.350E-01 2.305 2119700200041 7.900E-01 2.250 2119700200042 1.070E+00 2.293 2119700200043 1.260E+00 2.250 2119700200044 1.300E+00 2.222 2119700200045 1.410E+00 2.157 2119700200046 1.540E+00 2.157 2119700200047 1.550E+00 2.067 2119700200048 1.660E+00 2.006 2119700200049 1.750E+00 2.066 2119700200050 1.800E+00 1.934 2119700200051 2.020E+00 2.065 2119700200052 2.090E+00 1.840 2119700200053 2.160E+00 1.873 2119700200054 ENDDATA 29 0 2119700200055 ENDSUBENT 54 0 2119700299999 SUBENT 21197003 20230516 20231011 2119700300001 BIB 3 3 2119700300002 REACTION (92-U-233(N,ABS),,ALF) 2119700300003 ASSUMED (ASSUM,92-U-233(N,F),,NU) 2119700300004 HISTORY (20230516U) SD: STATUS updated. 2119700300005 ENDBIB 3 0 2119700300006 COMMON 1 3 2119700300007 ASSUM 2119700300008 NO-DIM 2119700300009 2.504 2119700300010 ENDCOMMON 3 0 2119700300011 DATA 2 12 2119700300012 EN DATA 2119700300013 EV NO-DIM 2119700300014 1.07E+00 9.20E-02 2119700300015 1.26E+00 1.13E-01 2119700300016 1.30E+00 1.27E-01 2119700300017 1.41E+00 1.61E-01 2119700300018 1.54E+00 1.61E-01 2119700300019 1.55E+00 2.11E-01 2119700300020 1.66E+00 2.48E-01 2119700300021 1.75E+00 2.12E-01 2119700300022 1.80E+00 2.95E-01 2119700300023 2.02E+00 2.13E-01 2119700300024 2.09E+00 3.61E-01 2119700300025 2.16E+00 3.37E-01 2119700300026 ENDDATA 14 0 2119700300027 ENDSUBENT 26 0 2119700399999 ENDENTRY 3 0 2119799999999