ENTRY 32507 20101206 31473250700000001 SUBENT 32507001 20101206 31473250700100001 BIB 15 43 3250700100002 TITLE The measurement of neutron capture cross section of 3250700100003 tungsten and gadolinium in the energy region from 560 3250700100004 to 1610 keV 3250700100005 FACILITY (VDG,3CPRSIU) Sichuan University pulsed Van de Graff 3250700100006 accelerator. Resolution time 10ns,F=2MHz,average 3250700100007 I=2-4 micro A. 3250700100008 INSTITUTE (3CPRSIU) 3250700100009 REFERENCE (J,PHE,12,(1),91,198801) 3250700100010 AUTHOR (Xiang Zhengyu,Mu Yunshan,Li Yexiang,Wang Shiming, 3250700100011 Xu Haishan) 3250700100012 INC-SOURCE (P-T) 3250700100013 DETECTOR (SCIN,LONGC) 3250700100014 Capture detector: a large scintillator,shaped in appro-3250700100015 ximate sphere,diameter 1.0m. 3250700100016 Monitor: long counter. 3250700100017 Neutron detector: a small scintillator. 3250700100018 SAMPLE Disk,diameter 9cm,purity 99.9%. 3250700100019 METHOD (TOF,COINC) Neutrons are collimated by parafin 3250700100020 (containing lithium) copper and lead. The large 3250700100021 scintillation detector is shielded by 10cm thick lead 3250700100022 and 40cm thick paraffin. 3250700100023 The sample is located in the center of large scintilla-3250700100024 tor. Coincidence technique and TOF method are used to 3250700100025 reduce background. 3250700100026 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) The data taken from 3250700100027 Jiang's evaluation(HSJ-81183(1981)). 3250700100028 MONIT-REF (,Jiang+,R,HSJ-81183,1981) 3250700100029 CORRECTION Multiple scattering,calculated with Monte-Carlo method 3250700100030 and checked in some energy points in experiment,using 3250700100031 the samples with different thickness. 3250700100032 ERR-ANALYS (ERR-T) The error mainly contains: 3250700100033 (ERR-1).the extrapolation of capture gamma spectrum 8%;3250700100034 (MONIT-ERR).standard cross section 7%; 3250700100035 (ERR-2).correction to multiple scattering 2%; 3250700100036 (ERR-S,2.,5.).statistical error 2-5%; 3250700100037 (ERR-3)the detector efficiency 2%. 3250700100038 total error about 12%. 3250700100039 STATUS (TABLE) Data taken from the authors. 3250700100040 (APRVD) Proof-copy was approved by author and author's 3250700100041 corrections have been entered in Dec.,1989. 3250700100042 HISTORY (19901012C) Compiled by Liu Tingjin,CNDC. 3250700100043 (20101030A) SD:Updated to new date formats,lower case. 3250700100044 Cosmetic changes 3250700100045 ENDBIB 43 0 3250700100046 COMMON 4 3 3250700100047 ERR-1 ERR-2 ERR-3 MONIT-ERR 3250700100048 PER-CENT PER-CENT PER-CENT PER-CENT 3250700100049 8. 2. 2. 7. 3250700100050 ENDCOMMON 3 0 3250700100051 ENDSUBENT 50 0 3250700199999 SUBENT 32507002 20101206 31473250700200001 BIB 1 1 3250700200002 REACTION (74-W-0(N,G),,SIG) 3250700200003 ENDBIB 1 0 3250700200004 NOCOMMON 0 0 3250700200005 DATA 3 6 3250700200006 EN DATA ERR-T 3250700200007 KEV MB MB 3250700200008 560. 59.1 7. 3250700200009 770. 55.4 6. 3250700200010 980. 62.0 7. 3250700200011 1160. 66.9 8. 3250700200012 1340. 65.1 8. 3250700200013 1610. 59.0 7. 3250700200014 ENDDATA 8 0 3250700200015 ENDSUBENT 14 0 3250700299999 SUBENT 32507003 20101206 31473250700300001 BIB 1 1 3250700300002 REACTION (64-GD-0(N,G),,SIG) 3250700300003 ENDBIB 1 0 3250700300004 NOCOMMON 0 0 3250700300005 DATA 3 6 3250700300006 EN DATA ERR-T 3250700300007 KEV MB MB 3250700300008 560. 164.1 19. 3250700300009 770. 142.6 17. 3250700300010 980. 136.6 16. 3250700300011 1160. 108.5 13. 3250700300012 1340. 102.5 12. 3250700300013 1610. 86.4 10. 3250700300014 ENDDATA 8 0 3250700300015 ENDSUBENT 14 0 3250700399999 ENDENTRY 3 0 3250799999999