ENTRY 30607 20090806 31403060700000001 SUBENT 30607001 20090806 31403060700100001 BIB 13 27 3060700100002 INSTITUTE (3CPRAEP) 3060700100003 REFERENCE (J,CNP,3,(1),52,1981) in Chinese, English abstract 3060700100004 (C,82ANTWER,,462,1982) Contains also Tm, see Exfor306573060700100005 AUTHOR (Chen Ying,Zhu Shengyun,Luo Dexing,Jiang Songsheng) 3060700100006 TITLE Measurements of Au-197 neutron radiative capture cross 3060700100007 sections between 100 and 1500 keV. 3060700100008 FACILITY (VDG,3CPRAEP) 2.5 MV Van de Graaff accelerator 3060700100009 INC-SOURCE (P-T) 3060700100010 T-Ti target,0.3 to 0.8 mg/cm2. 3060700100011 SAMPLE 99.9% purity gold disc, diameter 1.9 cm, thickness 3060700100012 0.03 cm. This sample is sandwiched with another 3060700100013 gold (same diam.,0.1 mm thickness) to shield the effect3060700100014 of resonance neutrons, and with Cd (thickness 0.03 cm) 3060700100015 for shielding of thermal neutrons. 3060700100016 METHOD (ACTIV) 3060700100017 DETECTOR (NAICR) 3 inch * 3 inch, NaI(Tl) scintillation counter.3060700100018 The efficiency was calibrated with Cs-137 source in 3060700100019 4Pi beta-gamma coincidence. 3060700100020 PART-DET (DG) 412 keV gamma from Au-198. 3060700100021 STATUS (TABLE) Data taken from Chinese J.of 3060700100022 Nucl.Phys.,3,(1)(1981)52, Table 3. 3060700100023 HISTORY (19811028C) KO. 3060700100024 (19830610U) KO.-Added new reference.- 3060700100025 (19850215U) OS. Country code corrected. 3060700100026 (20090725A) SD:Updated to new date formats,lower case. 3060700100027 CORRECTION Correction of neutron multiple scattering was 3060700100028 calculated with monte-carlo method. 3060700100029 ENDBIB 27 0 3060700100030 NOCOMMON 0 0 3060700100031 ENDSUBENT 30 0 3060700199999 SUBENT 30607002 20090806 31403060700200001 BIB 6 33 3060700200002 REACTION (79-AU-197(N,G)79-AU-198,,SIG) 3060700200003 Direct measurement of neutron flux. 3060700200004 DECAY-DATA (79-AU-198,,DG,412.) 3060700200005 SAMPLE .The sample was suspended in the iron wire-ring(diam. 3060700200006 10 cm) with the brass strings. 3060700200007 MONITOR (1-H-1(N,EL)1-H-1,,SIG) 3060700200008 The monitor reference is not mentioned. 3060700200009 The hydrogen proportional counter was used to 3060700200010 determine neutron flux. 3060700200011 COMMENT .Sample was placed at 0 deg to incident proton beams 3060700200012 (T(p)= 1.3,1.8,1.997 and 2.292 MeV). 3060700200013 ERR-ANALYS (ERR-T) The errors consist of the following,(in %) 3060700200014 (ERR-SYS) Systematic uncertainty (see below) 3060700200015 (ERR-S) Statistical uncertainty (see below) 3060700200016 ----------------------------------------------------- 3060700200017 Random error (ERR-S) * Systematic error=(ERR-SYS)3060700200018 ----------------------------------------------------- 3060700200019 .0 point drift 1. *.proton n.in prop.count. 1. 3060700200020 .Bg.from building 1. *.n-p scatt.Sigma(monit.) 0.53060700200021 .Sample-target dist. 1.5 *.Correct.Of n-flux meas't 1. 3060700200022 .Av.n-energy 0.5 *.Recoil p-spect. Half-area 3060700200023 .Target alignm't 1. * probability 1. 3060700200024 .Self-absorp.of g. 0.3 *.Correct.of back scatt. 1. 3060700200025 .412keV g.measurem't 1. *.Eff.of gamma counting 1.53060700200026 *.Correct.of g.Self-absorp.1. 3060700200027 *.Correct.along rad.direction 3060700200028 of gamma 0.53060700200029 *.Background 0.5 3060700200030 *.Sample weighing 0.13060700200031 Sum = 2.6 * Sum = 2.83060700200032 ----------------------------------------------------- 3060700200033 total error = 3.8%. 3060700200034 ----------------------------------------------------- 3060700200035 ENDBIB 33 0 3060700200036 COMMON 3 3 3060700200037 EN-ERR ERR-SYS ERR-S 3060700200038 PER-CENT PER-CENT PER-CENT 3060700200039 0.5 2.8 2.6 3060700200040 ENDCOMMON 3 0 3060700200041 DATA 3 4 3060700200042 EN DATA ERR-T 3060700200043 KEV MB MB 3060700200044 4.6200E+02 1.4940E+02 5.7000E+00 3060700200045 9.9100E+02 7.8200E+01 3.0000E+00 3060700200046 1.1900E+03 7.7400E+01 2.9000E+00 3060700200047 1.4900E+03 6.7000E+01 2.6000E+00 3060700200048 ENDDATA 6 0 3060700200049 ENDSUBENT 48 0 3060700299999 SUBENT 30607003 20090806 31403060700300001 BIB 5 34 3060700300002 REACTION (79-AU-197(N,G)79-AU-198,,SIG) 3060700300003 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) at 462, and 991 keV. 3060700300004 MONIT-REF (30607002,CHEN YING+,J,CNP,3,(1),52,198102) 3060700300005 COMMENT .Samples were placed at the angles of 0,25,50 and 75deg3060700300006 to incident proton beams (E(p)=1.3 and 1.8 MeV). 3060700300007 At 0 deg, E(n) of 997keV (E(p)=1.8MeV) and 3060700300008 467 keV (E(p)=1.3 MeV) were used as the normalization 3060700300009 points of energies to the monitor reaction (subent.002)3060700300010 at 991 and 462 keV, respectively). 3060700300011 ERR-ANALYS (ERR-T) The errors consist of following, (in %) 3060700300012 ----------------------------------------------------- 3060700300013 Random error * Angle = 25 deg 50 and 75 deg 3060700300014 ----------------------------------------------------- 3060700300015 .Charact.gamma-ray measurem't 1.4 * 1.4 3060700300016 .Sample target distance 1.5 * 1.5 3060700300017 .Correct.of g.Self-absorption 0.4 * 0.4 3060700300018 .Background from building 1. * 1. 3060700300019 .Average neutron energy 0.5 * 1. 3060700300020 .Influence of target alignment 1. * 2. 3060700300021 Sum = 2.6 * 3.2 3060700300022 ----------------------------------------------------- 3060700300023 Systematic error * Angle = 25 deg 50 and 75 deg 3060700300024 ----------------------------------------------------- 3060700300025 .Ang.div.of neutron beam 2. * 3. 3060700300026 .Correct.of scattering 0.5 * 0.5 3060700300027 .Geometrical correct.of sample 3060700300028 and its holder 1. * 1 3060700300029 .Background 0.5 * 0.5 3060700300030 .Monitor cross-section 3.8 * 3.8 3060700300031 (see subentry .002) 3060700300032 Sum = 4.5 * 5.0 3060700300033 ----------------------------------------------------- 3060700300034 Total error(%.)=5.2 (at 25deg) and 5.9(at 50,75deg) 3060700300035 ----------------------------------------------------- 3060700300036 ENDBIB 34 0 3060700300037 NOCOMMON 0 0 3060700300038 DATA 4 6 3060700300039 EN EN-ERR DATA ERR-T 3060700300040 KEV PER-CENT MB MB 3060700300041 1.3100E+02 1.0000E+00 2.8400E+02 1.7000E+01 3060700300042 2.6600E+02 1.0000E+00 2.2700E+02 1.3000E+01 3060700300043 4.0500E+02 5.0000E-01 1.6410E+02 8.5000E+00 3060700300044 4.4300E+02 1.0000E+00 1.5120E+02 8.9000E+00 3060700300045 6.8300E+02 1.0000E+00 1.0130E+02 6.0000E+00 3060700300046 9.0300E+02 5.0000E-01 8.4900E+01 4.4000E+00 3060700300047 ENDDATA 8 0 3060700300048 ENDSUBENT 47 0 3060700399999 ENDENTRY 3 0 3060799999999