ENTRY 21370 20071214 21912137000000001 SUBENT 21370001 20071214 21912137000100001 BIB 16 56 2137000100002 INSTITUTE (2UK OXF) 2137000100003 REFERENCE (J,PRS/A,236,41,1956) Experimental details. 2137000100004 (J,PRS/A,236,52,1956) Optical model analysis. 2137000100005 AUTHOR (R.G.P.Voss,R.Wilson) 2137000100006 TITLE -Neutron inelastic cross sections between 55 and 140 2137000100007 MeV -. 2137000100008 FACILITY (SYNCH) A.E.R.E. sychrocyclotron. 2137000100009 INC-SOURCE (P-BE ) Bombardment of a thin beryllium target with 2137000100010 the internal proton beam of the synchrocylotron 2137000100011 giving neutron beams of energy 55.,81.,105., and 140 2137000100012 MeV with an energy spread of about 10 %. 2137000100013 Well-collimated neutron beam of about 3cm diameter. 2137000100014 INC-SPECT Effective energy of neutron beam was determined by 2137000100015 measurement of neutron total c-s for carbon in good 2137000100016 geometry.Energy resolution about 10% full width at 2137000100017 half-maximum. 2137000100018 SAMPLE Sample absorbers were cylindrical,of diameter not less2137000100019 25cm and of a length to give significant attenuation 2137000100020 of the neutron beam. 2137000100021 Cylinder length: 2137000100022 Al - 22cm for 140 and 105 MeV and 2137000100023 10cm for 81 and 55 MeV neutrons measurement, 2137000100024 Cu - 25cm for 140 and 105 MeV and 2137000100025 9cm for 81 and 55 MeV neutrons measurement, 2137000100026 Pb - 9.0cm , Cd - 8.2cm , Cu - 8.0cm . 2137000100027 Chemical purity at least 99.99 %. 2137000100028 Absorbers were weighed to accuracy better than 0.1%. 2137000100029 METHOD Detection of scattered neutrons. 2137000100030 (PHD) Pulse-height distributions were determined. 2137000100031 DETECTOR (SCIN ) Large liquid scintillator, brass cylinder of 2137000100032 25cm long and 25cm diameter, benzene with 4 g/l of 2137000100033 p-terphenyl and 10 mg/l of diphenyl hexatrine. 2137000100034 Copper sheet in front of scintillator to prevent 2137000100035 protons. 2137000100036 (BF3) Boron fluoride chamber for beam monitoring. 2137000100037 MONITOR (5-B-10(N,A)3-LI-7,,SIG) For neutron beam monitoring. 2137000100038 REL-REF (N,,J.J.Thresher+,J,RSI,26,1186,1955)Details of 2137000100039 scintillator counter. 2137000100040 (R,,A.E.Taylor+,J,PM,44,(7),95,1953) Data used for 2137000100041 effective neutron energy determination and corrections2137000100042 for diffraction scattering. 2137000100043 STATUS (NDD) From Table 1, PRS/A,236,41. 2137000100044 HISTORY (19800212T) 2137000100045 (19800222E) 2137000100046 (20071214A) M.M. BIB information and 2137000100047 EN-ERR,ERR-S,ERR-1, MISC-COL values were added. 2137000100048 CORRECTION For pile-up in scintillator and dead-time in monitor 2137000100049 counter < 0.35%. 2137000100050 For background. 2137000100051 For variation of efficiency of counter. 2137000100052 For diffraction scattering. 2137000100053 For 'lengthening' of absorbers due to el. scattering. 2137000100054 ERR-ANALYS (ERR-T) Total standard error quoted. From statistical 2137000100055 uncertainty plus uncertainties in corrections. 2137000100056 (ERR-S) Standard deviation due counting statistics. 2137000100057 (ERR-1) Estimated error in diffraction correction. 2137000100058 ENDBIB 56 0 2137000100059 COMMON 1 3 2137000100060 EN-RSL 2137000100061 PER-CENT 2137000100062 1.0000E+01 2137000100063 ENDCOMMON 3 0 2137000100064 ENDSUBENT 63 0 2137000199999 SUBENT 21370002 20071214 21912137000200001 BIB 3 4 2137000200002 REACTION (6-C-0(N,NON),,SIG) Nonelastic cross section. 2137000200003 STATUS (NDD) 2137000200004 (TABLE) Table 5 of 1st reference. 2137000200005 MISC-COL (MISC1) Diffraction correction. 2137000200006 ENDBIB 4 0 2137000200007 NOCOMMON 0 0 2137000200008 DATA 7 4 2137000200009 EN EN-ERR DATA ERR-T ERR-S ERR-1 2137000200010 MISC1 2137000200011 MEV MEV B PER-CENT PER-CENT PER-CENT 2137000200012 PER-CENT 2137000200013 5.5000E+01 2. 2.7600E-01 9.2000E+00 1.95 9.0 2137000200014 27.0 2137000200015 8.1000E+01 2. 2.0200E-01 1.0000E+01 4.65 9.0 2137000200016 29.3 2137000200017 1.0500E+02 3. 2.3400E-01 3.3000E+00 1.44 3.0 2137000200018 6.6 2137000200019 1.4000E+02 4. 2.2100E-01 4.3000E+00 1.50 4.0 2137000200020 0.5 2137000200021 ENDDATA 12 0 2137000200022 ENDSUBENT 21 0 2137000299999 SUBENT 21370003 20071214 21912137000300001 BIB 3 4 2137000300002 REACTION (13-AL-27(N,NON),,SIG) Nonelastic Cross Section. 2137000300003 STATUS (NDD) 2137000300004 (TABLE) Table 4 of 1st reference. 2137000300005 MISC-COL (MISC1) Diffraction correction. 2137000300006 ENDBIB 4 0 2137000300007 NOCOMMON 0 0 2137000300008 DATA 7 4 2137000300009 EN EN-ERR DATA ERR-T ERR-S ERR-1 2137000300010 MISC1 2137000300011 MEV MEV B PER-CENT PER-CENT PER-CENT 2137000300012 PER-CENT 2137000300013 5.5000E+01 2. 4.9900E-01 8.1000E+00 1.38 8.0 2137000300014 2.7 2137000300015 8.1000E+01 2. 4.1200E-01 8.0000E+00 0.84 8.0 2137000300016 35.0 2137000300017 1.0500E+02 3. 4.2800E-01 2.4000E+00 1.32 2.0 2137000300018 0.7 2137000300019 1.4000E+02 4. 4.1800E-01 3.3000E+00 1.25 3.0 2137000300020 4.1 2137000300021 ENDDATA 12 0 2137000300022 ENDSUBENT 21 0 2137000399999 SUBENT 21370004 20071214 21912137000400001 BIB 3 5 2137000400002 REACTION (29-CU-0(N,NON),,SIG) Nonelastic Cross Section. 2137000400003 STATUS (NDD) 2137000400004 (TABLE) Table 3 of 1st reference. 2137000400005 MISC-COL (MISC1) Diffraction correction. 2137000400006 (MISC2) Correction in c-s, in correction for Cd used. 2137000400007 ENDBIB 5 0 2137000400008 NOCOMMON 0 0 2137000400009 DATA 8 4 2137000400010 EN EN-ERR DATA ERR-T ERR-S ERR-1 2137000400011 MISC1 MISC2 2137000400012 MEV MEV B PER-CENT PER-CENT PER-CENT 2137000400013 PER-CENT PER-CENT 2137000400014 5.5000E+01 2. 1.2200E+00 1.2000E+00 0.66 1.0 2137000400015 0.0 1.9 2137000400016 8.1000E+01 2. 8.4000E-01 5.1000E+00 1.05 5.0 2137000400017 13.6 8.0 2137000400018 1.0500E+02 3. 7.7300E-01 1.7000E+00 1.54 0.7 2137000400019 8.8 1.4 2137000400020 1.4000E+02 4. 7.4100E-01 1.7000E+00 1.79 0.2 2137000400021 0.0 1.79 2137000400022 ENDDATA 12 0 2137000400023 ENDSUBENT 22 0 2137000499999 SUBENT 21370005 20071214 21912137000500001 BIB 3 6 2137000500002 REACTION (48-CD-0(N,NON),,SIG) Nonelastic Cross Section. 2137000500003 STATUS (NDD) 2137000500004 (TABLE) Table 2 of 1st reference. 2137000500005 MISC-COL (MISC1) Diffraction correction. 2137000500006 (MISC2) Correction in c-s, in correction for Pb used. 2137000500007 (MISC3) Correction in c-s, in correction for Cu used. 2137000500008 ENDBIB 6 0 2137000500009 NOCOMMON 0 0 2137000500010 DATA 9 4 2137000500011 EN EN-ERR DATA ERR-T ERR-S ERR-1 2137000500012 MISC1 MISC2 MISC3 2137000500013 MEV MEV B PER-CENT PER-CENT PER-CENT 2137000500014 PER-CENT PER-CENT PER-CENT 2137000500015 5.5000E+01 2. 1.5460E+00 1.1000E+00 0.75 0.8 2137000500016 1.7 0.3 1.7 2137000500017 8.1000E+01 2. 1.2490E+00 4.3000E+00 1.42 4.0 2137000500018 8.5 2.6 7.8 2137000500019 1.0500E+02 3. 1.1980E+00 2.6000E+00 2.19 1.4 2137000500020 8.5 2.7 1.5 2137000500021 1.4000E+02 4. 1.0730E+00 1.8000E+00 1.69 0.5 2137000500022 1.4 1.0 0.1 2137000500023 ENDDATA 12 0 2137000500024 ENDSUBENT 23 0 2137000599999 SUBENT 21370006 20071214 21912137000600001 BIB 3 5 2137000600002 REACTION (82-PB-0(N,NON),,SIG) Nonelastic Cross Section. 2137000600003 STATUS (NDD) 2137000600004 (TABLE) Table 1 of 1st reference. 2137000600005 MISC-COL (MISC1) Diffraction correction. 2137000600006 (MISC2) Correction in c-s, in correction for Cd used. 2137000600007 ENDBIB 5 0 2137000600008 NOCOMMON 0 0 2137000600009 DATA 8 4 2137000600010 EN EN-ERR DATA ERR-T ERR-S ERR-1 2137000600011 MISC1 MISC2 2137000600012 MEV MEV B PER-CENT PER-CENT PER-CENT 2137000600013 PER-CENT PER-CENT 2137000600014 5.5000E+01 2. 2.3370E+00 9.0000E-01 0.66 1.0 2137000600015 0.0 1.9 2137000600016 8.1000E+01 2. 1.9770E+00 1.5000E+00 1.05 5.0 2137000600017 13.6 8.0 2137000600018 1.0500E+02 3. 1.7150E+00 2.4000E+00 1.54 0.7 2137000600019 8.8 1.4 2137000600020 1.4000E+02 4. 1.7040E+00 1.4000E+00 1.79 0.2 2137000600021 0.41 0.0 2137000600022 ENDDATA 12 0 2137000600023 ENDSUBENT 22 0 2137000699999 ENDENTRY 6 0 2137099999999