ENTRY 21127 20071015 21882112700000001 SUBENT 21127001 20071015 21882112700100001 BIB 16 47 2112700100002 INSTITUTE (2ITYCIS) 2112700100003 REFERENCE (J,NP,43,124,196305) Main reference, graph given 2112700100004 AUTHOR (M.Mangialajo,F.Merzari,P.G.Sona) 2112700100005 TITLE -Good resolution measurement of the fission excitation 2112700100006 curve of U-238 by fast neutrons around 14 MeV- 2112700100007 FACILITY (CCW) Cockroft-Walton accelerator 2112700100008 INC-SOURCE (D-T) 100 keV deuterons on tritide target. Neutron 2112700100009 energies between 13.7 and 14.8 MeV obtained by 2112700100010 varying angle. 2112700100011 INC-SPECT .Neutron energy spread between 100 and 120 keV found 2112700100012 by calculation and measurement with silicon detector 2112700100013 on Si-28(N,A)Mg-25 reaction. 2112700100014 SAMPLE .U-238 layer. 2112700100015 METHOD .Detection of emitted particles. 2112700100016 DETECTOR (SOLST) Hughes SD1/22 silicon detector to count 2112700100017 fission fragments. 2112700100018 (CSICR) CsI scintillator viewed by 52 AVP photo- 2112700100019 multiplier to detect proton recoils from 2112700100020 polyethylene monitor foil behind silicon 2112700100021 detector. 2112700100022 Identical monitor system at fixed angle of 2112700100023 90 degrees to the beam. 2112700100024 MONITOR (1-H-1(N,EL)1-H-1,,DA) Hydrogen elastic cross-section 2112700100025 at 0 degrees as measured by the monitor system 2112700100026 at 90 degrees to the beam. Normalization value 2112700100027 at various neutron energies from interpolation 2112700100028 of the data of howerton, UCRL-5351, (1958). 2112700100029 PART-DET (FF) Fission fragments. 2112700100030 STATUS ....... Cross-sections taken from graph. Original 2112700100031 values unobtainable, letter from M.Mangialajo, 2112700100032 September 1965. 2112700100033 CORRECTION .Analytic correction for neutron absorption in tritide 2112700100034 target rendered unnecessary by flux monitor behind 2112700100035 sample-detector assembly. 2112700100036 .Correction due to absorption in various materials and 2112700100037 energy variation of N-P scattering cross-section. 2112700100038 ERR-ANALYS .Statistical errors of the order of 2 percent. 2112700100039 .Systematic errors due to imperfection of geometry 2112700100040 about 2 percent. 2112700100041 .The anisotropy of the (N,P) scattering cross-section 2112700100042 was not taken into account. This may contribute an 2112700100043 error of about 5 percent, letter from M.Mangialajo, 2112700100044 September 1965. 2112700100045 HISTORY (19790926C) 2112700100046 (19791112E) 2112700100047 (20071015A) Date is corrected. Subent 21127003 added 2112700100048 (20071015U) EN-RSL moved to SAN 001 2112700100049 ENDBIB 47 0 2112700100050 COMMON 1 3 2112700100051 EN-RSL 2112700100052 MEV 2112700100053 0.1 2112700100054 ENDCOMMON 3 0 2112700100055 ENDSUBENT 54 0 2112700199999 SUBENT 21127002 20071015 21882112700200001 BIB 3 5 2112700200002 REACTION (92-U-238(N,F),,SIG) 2112700200003 STATUS (NDD) From NEUDADA. Corresponds to graphical data 2112700200004 in Fig.2 of the publication. 2112700200005 (SPSDD,21127003) 2112700200006 HISTORY (20071015A) DATA-ERR changed to ERR-S 2112700200007 ENDBIB 5 0 2112700200008 COMMON 2 3 2112700200009 ERR-S ERR-S 2112700200010 B PER-CENT 2112700200011 5.E-02 2. 2112700200012 ENDCOMMON 3 0 2112700200013 DATA 2 8 2112700200014 EN DATA 2112700200015 MEV B 2112700200016 1.375E+01 1.27 2112700200017 1.390E+01 1.33 2112700200018 1.405E+01 1.28 2112700200019 1.425E+01 1.29 2112700200020 1.440E+01 1.34 2112700200021 1.455E+01 1.30 2112700200022 1.465E+01 1.25 2112700200023 1.475E+01 1.31 2112700200024 ENDDATA 10 0 2112700200025 ENDSUBENT 24 0 2112700299999 SUBENT 21127003 20071015 21882112700300001 BIB 4 10 2112700300002 REACTION (92-U-238(N,F),,SIG) 2112700300003 ERR-ANALYS (ERR-1) Systematic errors due to imperfection of 2112700300004 geometry about 2 percent. 2112700300005 (ERR-2) Error of the anisotropy of the (N,P) 2112700300006 scattering. This may contribute an error of about 2112700300007 5 percent, letter from M.Mangialajo, September 1965. 2112700300008 STATUS (CURVE) Graphical data in Fig.2 of the main reference.2112700300009 Digitized by N.Ohtsuka, delivered by INTERNET,2112700300010 2007-09-04 2112700300011 HISTORY (20071015C) SM 2112700300012 ENDBIB 10 0 2112700300013 COMMON 2 3 2112700300014 ERR-1 ERR-2 2112700300015 PER-CENT PER-CENT 2112700300016 2. 5. 2112700300017 ENDCOMMON 3 0 2112700300018 DATA 4 8 2112700300019 EN EN-ERR DATA ERR-S 2112700300020 MEV MEV B B 2112700300021 13.74 0.06 1.28 0.03 2112700300022 13.90 0.06 1.32 0.03 2112700300023 14.07 0.06 1.29 0.03 2112700300024 14.24 0.06 1.30 0.03 2112700300025 14.41 0.06 1.35 0.03 2112700300026 14.55 0.06 1.31 0.04 2112700300027 14.66 0.05 1.28 0.03 2112700300028 14.76 0.05 1.33 0.03 2112700300029 ENDDATA 10 0 2112700300030 ENDSUBENT 29 0 2112700399999 ENDENTRY 3 0 2112799999999