ENTRY 21748 20230416 231621748 0 1 SUBENT 21748001 20230416 231621748 1 1 BIB 13 48 21748 1 2 TITLE Measurement of the neutron capture cross section 21748 1 3 of Th-232 from 1 keV to 408 keV 21748 1 4 AUTHOR (K.Kobayashi,Y.Fujita,N.Yamamuro) 21748 1 5 REFERENCE (J,NST,18,823,1981) 21748 1 6 (P,NEANDC(J)-56,1978) - prelim.data 21748 1 7 INSTITUTE (2JPNKTO) K.K and Y.F 21748 1 8 (2JPNTIT) Y.F 21748 1 9 FACILITY (LINAC,2JPNKTO) 46-MeV Linac of Research Reactor 21748 1 10 Institute, Kyoto University. 21748 1 11 SAMPLE ThO2 powder in an alminum can. Sample thickness 21748 1 12 was about 2.2 g/cm**2. 21748 1 13 Chemical separation was done to remove radioactive 21748 1 14 daughters, and the sample was heated to remove water. 21748 1 15 B-10 powder in an alminum can, enriched to 93% 21748 1 16 DETECTOR (SCIN) A pair of C6D6 liquid scintilators (NE230) 21748 1 17 11 cm in dia. and 5 cm thick, located at 12 m on 21748 1 18 flight path. 21748 1 19 ANALYSIS After dead time correction, data in each channel were 21748 1 20 added in energy interval of 0.1 lethergy unit. The 21748 1 21 capture cross section was measured relatively to the 21748 1 22 B-10(n,alpha,gamma) cross section and the Th-232(n,g) 21748 1 23 cross section at 24 keV. See MONITOR. 21748 1 24 MONITOR (5-B-10(N,A)3-LI-7,PAR,SIG) 21748 1 25 values taken from INDC-30/L+Sp(1980),p.19 for ENDF/B-V21748 1 26 (90-TH-232(N,G)90-TH-233,,SIG) 21748 1 27 520+-45 mb at 24 keV, previously obtained by the 21748 1 28 authors (NST,15,637(1978)). 21748 1 29 CORRECTION For multiple scattering and self-shielding. 21748 1 30 ERR-ANALYS (ERR-T) Total error 21748 1 31 (ERR-1) normalization error of 8.6%, 21748 1 32 (ERR-2,1.5,2.) counting statistics of 1.5 to 2.0%, 21748 1 33 (ERR-3,1.6,4.2) correction error of 1.6 to 4.2%, 21748 1 34 (MONIT-ERR,0.2,1.6) standard deviation in the 21748 1 35 B-10(n,alpha,gamma) cross section of 0.2 to 1.6%, 21748 1 36 (ERR-4) The other systematic errors, which included 21748 1 37 correlations between the uncertainties, were 21748 1 38 assumed to be 1%. 21748 1 39 (ERR-5) The other residual systematic errors without 21748 1 40 the correlations were also evaluated to be 1%. 21748 1 41 (ERR-6,0.5,1.) uncertainty of the relative efficiency 21748 1 42 for the capture detector is about 1% near 400 keV and 21748 1 43 0.5% near 1 keV 21748 1 44 COMMENT In the paper, errors for 11 elements are given, and 21748 1 45 correlation matrix is also given for 12 energy groups.21748 1 46 HISTORY (19811209C) T.N 21748 1 47 (19840106U) A.P.T. Japan code changed to jpn 21748 1 48 (20230416A) SD:Updated to new date formats,lower case. 21748 1 49 Corrections in all Subents. 21748 1 50 ENDBIB 48 0 21748 1 51 COMMON 3 3 21748 1 52 ERR-1 ERR-4 ERR-5 21748 1 53 PER-CENT PER-CENT PER-CENT 21748 1 54 8.6 1. 1. 21748 1 55 ENDCOMMON 3 0 21748 1 56 ENDSUBENT 55 0 21748 199999 SUBENT 21748002 20230416 231621748 2 1 BIB 5 5 21748 2 2 REACTION (90-TH-232(N,G)90-TH-233,,SIG,,AV) 21748 2 3 INC-SOURCE (PHOTO) Tantalum plates, white neutrons. 21748 2 4 METHOD (TOF) 21748 2 5 STATUS (TABLE) Tbl.6 from Nucl.Sci.Tech.,18(1981)823 21748 2 6 HISTORY (20230416U) SD: BIB updated. 21748 2 7 ENDBIB 5 0 21748 2 8 NOCOMMON 0 0 21748 2 9 DATA 4 60 21748 2 10 EN-MIN EN-MAX DATA ERR-T 21748 2 11 KEV KEV MB MB 21748 2 12 1.00 1.10 1304. 138.4 21748 2 13 1.10 1.23 1328. 142.2 21748 2 14 1.23 1.36 1614. 176.9 21748 2 15 1.36 1.50 1345. 144.6 21748 2 16 1.50 1.66 1739. 192.2 21748 2 17 1.66 1.83 1632. 168.7 21748 2 18 1.83 2.02 1515. 155.1 21748 2 19 2.02 2.24 1655. 171.7 21748 2 20 2.24 2.47 1316. 134.3 21748 2 21 2.47 2.73 1423. 155.2 21748 2 22 2.73 3.02 1294. 144.0 21748 2 23 3.02 3.34 1194. 123.0 21748 2 24 3.34 3.69 935. 98.9 21748 2 25 3.69 4.08 1049. 110.9 21748 2 26 4.08 4.50 1057. 106.9 21748 2 27 4.50 4.98 1084. 109.7 21748 2 28 4.98 5.50 921. 92.0 21748 2 29 5.50 6.08 1002. 101.8 21748 2 30 6.08 6.72 832. 82.8 21748 2 31 6.72 7.43 820. 81.9 21748 2 32 7.43 8.21 844. 84.5 21748 2 33 8.21 9.07 799. 79.9 21748 2 34 9.07 10.0 707. 70.1 21748 2 35 10.0 11.0 712. 71.3 21748 2 36 11.0 12.3 702. 70.3 21748 2 37 12.3 13.6 683. 68.2 21748 2 38 13.6 15.0 671. 67.5 21748 2 39 15.0 16.6 636. 63.9 21748 2 40 16.6 18.3 571. 56.7 21748 2 41 18.3 20.2 566. 56.3 21748 2 42 20.2 22.4 554. 55.7 21748 2 43 22.4 24.7 520. 52.0 21748 2 44 24.7 27.3 511. 51.2 21748 2 45 27.3 30.2 492. 49.1 21748 2 46 30.2 33.4 474. 47.2 21748 2 47 33.4 36.9 462. 46.2 21748 2 48 36.9 40.8 425. 42.8 21748 2 49 40.8 45.0 417. 41.9 21748 2 50 45.0 49.8 369. 36.9 21748 2 51 49.8 55.0 322. 31.7 21748 2 52 55.0 60.8 337. 33.6 21748 2 53 60.8 67.2 294. 29.0 21748 2 54 67.2 74.3 269. 26.3 21748 2 55 74.3 82.1 263. 25.9 21748 2 56 82.1 90.7 248. 25.2 21748 2 57 90.7 100. 229. 23.3 21748 2 58 100. 110. 211. 21.4 21748 2 59 110. 123. 209. 21.3 21748 2 60 123. 136. 189. 18.5 21748 2 61 136. 150. 177. 17.3 21748 2 62 150. 166. 162. 15.9 21748 2 63 166. 183. 161. 15.8 21748 2 64 183. 202. 164. 16.3 21748 2 65 202. 224. 161. 16.0 21748 2 66 224. 247. 159. 16.0 21748 2 67 247. 273. 149. 15.2 21748 2 68 273. 302. 152. 15.8 21748 2 69 302. 334. 144. 15.1 21748 2 70 334. 369. 138. 14.7 21748 2 71 369. 408. 145. 15.9 21748 2 72 ENDDATA 62 0 21748 2 73 ENDSUBENT 72 0 21748 299999 SUBENT 21748003 20230416 231621748 3 1 BIB 5 5 21748 3 2 REACTION (90-TH-232(N,G)90-TH-233,,SIG) 21748 3 3 INC-SOURCE (PHOTO) Tantalum plates, and iron and silicon filters. 21748 3 4 METHOD (FNB) 21748 3 5 STATUS (TABLE) Tbl.7 from Nucl.Sci.Tech.,18(1981)823 21748 3 6 HISTORY (20230416U) SD: BIB updated. 21748 3 7 ENDBIB 5 0 21748 3 8 NOCOMMON 0 0 21748 3 9 DATA 3 3 21748 3 10 EN DATA ERR-T 21748 3 11 KEV MB MB 21748 3 12 24. 520. 48.7 21748 3 13 55. 328. 32.0 21748 3 14 146. 165. 15.6 21748 3 15 ENDDATA 5 0 21748 3 16 ENDSUBENT 15 0 21748 399999 ENDENTRY 3 0 2174899999999