ENTRY 10570 20240624 15131057000000001 SUBENT 10570001 20240624 15131057000100001 BIB 13 55 1057000100002 TITLE Small-angle neutron scattering from Pb and 238U 1057000100003 between 0.6 and 2.2 MeV 1057000100004 AUTHOR (L.L.Yu,J.C.Overley) 1057000100005 REFERENCE (J,NP/A,324,160,1979) Main reference. 1057000100006 #doi:10.1016/0375-9474(79)90085-X 1057000100007 (J,BAP,20,1496(BD9),1975) Initial publication. 1057000100008 INSTITUTE (1USAORE) 1057000100009 FACILITY (VDG,1USAORE) 1057000100010 INC-SOURCE (P-LI7) 1.5 ns pulsed 4 MeV proton beam stroked thick 1057000100011 lithium metal target and produced neutron energy 1057000100012 continuum spectrum. 1057000100013 DETECTOR (SCIN) NE218 scintillator. Bias levels were set to 1057000100014 reject events corresponding to recoil protons of less 1057000100015 than 0.4 MeV and greater than 6 MeV. Pulse shape 1057000100016 discrimination against gamma-rays was also employed. 1057000100017 METHOD (TOF,PSD) Time-of-flight. Neutron flight paths from 1057000100018 source to scatterer and from scatterer to detector 1057000100019 were each 5 m. Data were averaged over 100 keV 1057000100020 incident energy bins. 1057000100021 MONITOR No information 1057000100022 CORRECTION Data corrected for multiple scattering, inelastic 1057000100023 scattering, and background effects. Cross sections 1057000100024 for 238U were corrected for inelastic scattering with 1057000100025 the previously measured inelastic cross sections 1057000100026 summarized by Lambropoulos. The magnitude of this 1057000100027 correction at 1.5 deg ranged from about 10% at low 1057000100028 energies to less than 1% at high energies. Use of a 1057000100029 more recent set of evaluated cross sections would not 1057000100030 substantially alter the results. Inelastic scattering 1057000100031 corrections for lead were negligible. 1057000100032 ERR-ANALYS (ERR-T) When these are quadratically combined with 1057000100033 the effects of possible errors in alignment listed in 1057000100034 table 1, the overall systematic uncertainties in 1057000100035 cross section are approximately 7%, 11%, and 7% for 1057000100036 the 0.5, 1.0, and 1.5 degree data, respectively. 1057000100037 (ERR-S,8.,13.) When fluctuations in values of the 1057000100038 cross sections stemming from the various corrections 1057000100039 are quadratically combined with statistical standard 1057000100040 deviations in the yields, uncertainties off 7% to 13% 1057000100041 result. 1057000100042 (ERR-1) Fluctuations in source fluence. 1057000100043 (ERR-2) Electronic bias drifts. 1057000100044 (ERR-3) Variations in detector sensitivity over the 1057000100045 face of the detector. 1057000100046 (ERR-4,3.,10.) Possible errors in alignment. 1057000100047 STATUS (APRVD) Approved by author 1976/5/24. 1057000100048 tabulated data received from Yu. 1976/1/20. 1057000100049 HISTORY (19760126C) 1057000100050 (19830913A) Converted to reaction formalism. 1057000100051 (19860529A) BIB updates. 1057000100052 (20040602A) Converted to new date formats, lower 1057000100053 case. Data restored. 1057000100054 (20240624A) BP: Updated entry, added main reference, 1057000100055 FACILITY, NRDC Memo 4C-3/0420 comments. 1057000100056 Corrected ERR-ANALYS. 1057000100057 ENDBIB 55 0 1057000100058 COMMON 3 3 1057000100059 ERR-1 ERR-2 ERR-3 1057000100060 PER-CENT PER-CENT PER-CENT 1057000100061 4.0 2.0 3.0 1057000100062 ENDCOMMON 3 0 1057000100063 ENDSUBENT 62 0 1057000199999 SUBENT 10570002 20240624 15131057000200001 BIB 2 4 1057000200002 REACTION (82-PB-0(N,EL)82-PB-0,,DA) 1057000200003 STATUS (TABLE,,L.L.Yu+,J,NP/A,324,160,1979) 1057000200004 Authors data, also shown in Fig.3, page 165 of 1057000200005 J,NP/A,324,160,1979. 1057000200006 ENDBIB 4 0 1057000200007 NOCOMMON 0 0 1057000200008 DATA 5 54 1057000200009 ANG ANG-RSL EN DATA ERR-T 1057000200010 ADEG ADEG MEV B/SR B/SR 1057000200011 0.52 0.1 0.6 6.43 0.74 1057000200012 0.52 0.1 0.7 6.68 0.71 1057000200013 0.52 0.1 0.8 7.06 0.71 1057000200014 0.52 0.1 0.9 8.10 0.68 1057000200015 0.52 0.1 1.0 7.47 0.69 1057000200016 0.52 0.1 1.1 7.30 0.67 1057000200017 0.52 0.1 1.2 7.63 0.67 1057000200018 0.52 0.1 1.3 8.56 0.69 1057000200019 0.52 0.1 1.4 8.74 0.71 1057000200020 0.52 0.1 1.5 10.11 0.70 1057000200021 0.52 0.1 1.6 9.15 0.69 1057000200022 0.52 0.1 1.7 10.26 0.77 1057000200023 0.52 0.1 1.8 9.48 0.73 1057000200024 0.52 0.1 1.9 10.06 0.80 1057000200025 0.52 0.1 2.0 10.29 0.83 1057000200026 0.52 0.1 2.1 10.70 0.77 1057000200027 0.52 0.1 2.2 9.04 0.68 1057000200028 0.52 0.1 2.3 12.07 1.36 1057000200029 1.0 0.6 0.6 2.57 0.31 1057000200030 1.0 0.6 0.7 2.99 0.32 1057000200031 1.0 0.6 0.8 3.94 0.36 1057000200032 1.0 0.6 0.9 3.26 0.33 1057000200033 1.0 0.6 1.0 3.09 0.34 1057000200034 1.0 0.6 1.1 3.69 0.35 1057000200035 1.0 0.6 1.2 3.94 0.34 1057000200036 1.0 0.6 1.3 4.82 0.37 1057000200037 1.0 0.6 1.4 4.35 0.37 1057000200038 1.0 0.6 1.5 4.14 0.37 1057000200039 1.0 0.6 1.6 4.81 0.37 1057000200040 1.0 0.6 1.7 6.32 0.43 1057000200041 1.0 0.6 1.8 5.44 0.39 1057000200042 1.0 0.6 1.9 5.78 0.42 1057000200043 1.0 0.6 2.0 6.44 0.43 1057000200044 1.0 0.6 2.1 6.77 0.43 1057000200045 1.0 0.6 2.2 6.59 0.39 1057000200046 1.0 0.6 2.3 7.93 0.50 1057000200047 1.5 0.6 0.6 2.00 0.23 1057000200048 1.5 0.6 0.7 2.03 0.24 1057000200049 1.5 0.6 0.8 2.48 0.27 1057000200050 1.5 0.6 0.9 2.35 0.26 1057000200051 1.5 0.6 1.0 2.12 0.26 1057000200052 1.5 0.6 1.1 2.16 0.27 1057000200053 1.5 0.6 1.2 2.96 0.29 1057000200054 1.5 0.6 1.3 3.20 0.30 1057000200055 1.5 0.6 1.4 3.06 0.31 1057000200056 1.5 0.6 1.5 3.13 0.30 1057000200057 1.5 0.6 1.6 3.40 0.30 1057000200058 1.5 0.6 1.7 4.16 0.35 1057000200059 1.5 0.6 1.8 3.93 0.34 1057000200060 1.5 0.6 1.9 3.76 0.36 1057000200061 1.5 0.6 2.0 4.92 0.40 1057000200062 1.5 0.6 2.1 5.54 0.40 1057000200063 1.5 0.6 2.2 4.47 0.36 1057000200064 1.5 0.6 2.3 6.47 0.46 1057000200065 ENDDATA 56 0 1057000200066 ENDSUBENT 65 0 1057000299999 SUBENT 10570003 20240624 15131057000300001 BIB 2 4 1057000300002 REACTION (92-U-238(N,EL)92-U-238,,DA) 1057000300003 STATUS (TABLE,,L.L.Yu+,J,NP/A,324,160,1979) 1057000300004 Authors data, also shown in Fig.3, page 165 of 1057000300005 J,NP/A,324,160,1979. 1057000300006 ENDBIB 4 0 1057000300007 NOCOMMON 0 0 1057000300008 DATA 5 54 1057000300009 ANG ANG-RSL EN DATA ERR-T 1057000300010 ADEG ADEG MEV B/SR B/SR 1057000300011 0.5 0.1 0.6 12.03 1.45 1057000300012 0.5 0.1 0.7 13.32 1.49 1057000300013 0.5 0.1 0.8 8.30 1.46 1057000300014 0.5 0.1 0.9 12.99 1.42 1057000300015 0.5 0.1 1.0 13.16 1.47 1057000300016 0.5 0.1 1.1 12.28 1.39 1057000300017 0.5 0.1 1.2 12.11 1.36 1057000300018 0.5 0.1 1.3 11.87 1.36 1057000300019 0.5 0.1 1.4 13.28 1.37 1057000300020 0.5 0.1 1.5 12.24 1.32 1057000300021 0.5 0.1 1.6 13.35 1.34 1057000300022 0.5 0.1 1.7 12.12 1.35 1057000300023 0.5 0.1 1.8 14.15 1.37 1057000300024 0.5 0.1 1.9 13.66 1.46 1057000300025 0.5 0.1 2.0 16.17 1.46 1057000300026 0.5 0.1 2.1 14.54 1.44 1057000300027 0.5 0.1 2.2 13.77 1.33 1057000300028 0.5 0.1 2.3 15.76 1.84 1057000300029 1.0 0.6 0.6 4.23 0.41 1057000300030 1.0 0.6 0.7 4.28 0.41 1057000300031 1.0 0.6 0.8 4.99 0.44 1057000300032 1.0 0.6 0.9 4.62 0.44 1057000300033 1.0 0.6 1.0 5.43 0.47 1057000300034 1.0 0.6 1.1 5.18 0.46 1057000300035 1.0 0.6 1.2 4.77 0.45 1057000300036 1.0 0.6 1.3 4.89 0.47 1057000300037 1.0 0.6 1.4 5.67 0.49 1057000300038 1.0 0.6 1.5 5.54 0.48 1057000300039 1.0 0.6 1.6 5.74 0.48 1057000300040 1.0 0.6 1.7 6.65 0.50 1057000300041 1.0 0.6 1.8 7.36 0.53 1057000300042 1.0 0.6 1.9 7.58 0.56 1057000300043 1.0 0.6 2.0 7.87 0.56 1057000300044 1.0 0.6 2.1 8.04 0.53 1057000300045 1.0 0.6 2.2 8.10 0.49 1057000300046 1.0 0.6 2.3 7.76 0.55 1057000300047 1.5 0.6 0.6 2.84 0.45 1057000300048 1.5 0.6 0.7 3.13 0.47 1057000300049 1.5 0.6 0.8 3.12 0.47 1057000300050 1.5 0.6 0.9 2.52 0.43 1057000300051 1.5 0.6 1.0 3.50 0.51 1057000300052 1.5 0.6 1.1 3.22 0.47 1057000300053 1.5 0.6 1.2 3.42 0.47 1057000300054 1.5 0.6 1.3 4.09 0.52 1057000300055 1.5 0.6 1.4 4.52 0.54 1057000300056 1.5 0.6 1.5 4.35 0.52 1057000300057 1.5 0.6 1.6 4.65 0.53 1057000300058 1.5 0.6 1.7 5.45 0.56 1057000300059 1.5 0.6 1.8 4.65 0.54 1057000300060 1.5 0.6 1.9 4.85 0.57 1057000300061 1.5 0.6 2.0 4.98 0.57 1057000300062 1.5 0.6 2.1 6.02 0.59 1057000300063 1.5 0.6 2.2 6.45 0.56 1057000300064 1.5 0.6 2.3 7.44 0.65 1057000300065 ENDDATA 56 0 1057000300066 ENDSUBENT 65 0 1057000399999 ENDENTRY 3 0 1057099999999