ENTRY 31409 20100220 31443140900000001 SUBENT 31409001 20100220 31443140900100001 BIB 13 45 3140900100002 TITLE Cross sections of Rb-85 and Rb-87 for fast neutrons. 3140900100003 AUTHOR (Yuan Xialin,Zhao Wenrong,Yu Weixiang,Lu Hanlin) 3140900100004 INSTITUTE (3CPRAEP) 3140900100005 REFERENCE (J,CNP,12,(4),289,1990) 3140900100006 (R,INDC(CPR)-16,198908) only cross section data. 3140900100007 FACILITY (VDG,3CPRAEP) CIAE Van der Graaff accelerator and 3140900100008 (CCW,3CPRAEP) Cockroft Walton accelerator. 3140900100009 SAMPLE Rubidium-chloride powder pressed into tablets of 10 mm 3140900100010 or 20 mm in diameter used as samples for relative and 3140900100011 absolute measurements respectively. 3140900100012 INC-SOURCE (D-T) For the absolute measurements the sample was 3140900100013 placed at 45 deg. with respect to the deuteron beam 3140900100014 direction and at 7 cm from the neutron target. For the 3140900100015 relative measurements a group of samples were 3140900100016 symmetrically mounted at different angles with 3140900100017 respect to the beam axis. 3140900100018 METHOD (ACTIV,ASSOP) The absolute cross sections were 3140900100019 measured at En=14.48 MeV using the associated alpha 3140900100020 particle method to get the neutron fluence. 3140900100021 DETECTOR (GELI) 3140900100022 CORRECTION Corrections were made for gamma-ray self-absorption in 3140900100023 the sample (< 2%), sum peak effect from deexitation of 3140900100024 residuals ( 6%-27%), the effects of scattered low- 3140900100025 energy neutrons and neutron absorption in target and 3140900100026 sample (0.23%-1.83%) calculated by a Monte-Carlo 3140900100027 program. Necessary corrections were also considered in 3140900100028 absolute neutron fluence determination. 3140900100029 ERR-ANALYS (ERR-T) The uncertainties of the cross sections 3140900100030 include the errors of: 3140900100031 (ERR-1) neutron fluence measurement(1.2%), 3140900100032 (ERR-2,,2.) efficiency of gamma-ray full 3140900100033 energy peak (< 2%),3140900100034 (ERR-3,,0.4) gamma-ray self absorption(< 0.4%), 3140900100035 (ERR-4,,0.6) correction of scattered neutrons (< 0.6%),3140900100036 * counting statistics of activity, 3140900100037 * half-live values, 3140900100038 * gamma-ray branching ratio, 3140900100039 * sum peak corrections for the relative measurements,3140900100040 * in addition, the errors of neutron angular 3140900100041 distribution and activity determination. 3140900100042 STATUS (TABLE) Data are from Table 1 of Chin. Jrn. of 3140900100043 Nucl. Phys., Vol 12, no. 4, pp. 289-296 (1990).3140900100044 HISTORY (19921104C) HW 3140900100045 (19930120U) HW.-Mispunch corrected in subent 006.- 3140900100046 (20090730A) SD:Updated to new date formats,lower case. 3140900100047 ENDBIB 45 0 3140900100048 COMMON 1 3 3140900100049 ERR-1 3140900100050 PER-CENT 3140900100051 1.2 3140900100052 ENDCOMMON 3 0 3140900100053 ENDSUBENT 52 0 3140900199999 SUBENT 31409002 20100220 31443140900200001 BIB 4 4 3140900200002 REACTION (37-RB-85(N,2N)37-RB-84-M,,SIG) 3140900200003 DECAY-DATA (37-RB-84-M,20.5MIN,DG,248.,.63) 3140900200004 MONITOR (37-RB-85(N,2N)37-RB-84-M,,SIG) Absolute measurement. 3140900200005 DECAY-MON (37-RB-84-M,20.5MIN,DG,248.,.63) 3140900200006 ENDBIB 4 0 3140900200007 COMMON 3 3 3140900200008 EN-NRM MONIT MONIT-ERR 3140900200009 MEV MB MB 3140900200010 14.58 460. 13. 3140900200011 ENDCOMMON 3 0 3140900200012 DATA 4 10 3140900200013 EN EN-ERR DATA ERR-T 3140900200014 MEV MEV MB MB 3140900200015 12.49 0.11 238. 9. 3140900200016 13.47 0.10 339. 8. 3140900200017 13.74 0.21 372. 15. 3140900200018 13.83 0.07 387. 12. 3140900200019 14.43 0.10 442. 14. 3140900200020 14.70 0.14 470. 15. 3140900200021 14.80 0.15 478. 15. 3140900200022 16.02 0.22 566. 23. 3140900200023 17.12 0.13 600. 24. 3140900200024 17.54 0.15 607. 25. 3140900200025 ENDDATA 12 0 3140900200026 ENDSUBENT 25 0 3140900299999 SUBENT 31409003 20100220 31443140900300001 BIB 4 4 3140900300002 REACTION (37-RB-85(N,2N)37-RB-84,,SIG) 3140900300003 DECAY-DATA (37-RB-84-G,32.87D,DG,881.,.679) 3140900300004 MONITOR (37-RB-85(N,2N)37-RB-84,,SIG) Absolute measurement. 3140900300005 DECAY-MON (37-RB-84-G,32.87D,DG,881.,.679) 3140900300006 ENDBIB 4 0 3140900300007 COMMON 3 3 3140900300008 EN-NRM MONIT MONIT-ERR 3140900300009 MEV MB MB 3140900300010 14.58 1106. 31. 3140900300011 ENDCOMMON 3 0 3140900300012 DATA 4 10 3140900300013 EN EN-ERR DATA ERR-T 3140900300014 MEV MEV MB MB 3140900300015 12.49 0.11 652. 26. 3140900300016 13.47 0.10 845. 28. 3140900300017 13.74 0.21 912. 34. 3140900300018 13.83 0.07 940. 29. 3140900300019 14.43 0.10 1084. 33. 3140900300020 14.70 0.14 1128. 34. 3140900300021 14.80 0.15 1138. 35. 3140900300022 16.02 0.22 1287. 48. 3140900300023 17.12 0.13 1343. 50. 3140900300024 17.54 0.15 1373. 50. 3140900300025 ENDDATA 12 0 3140900300026 ENDSUBENT 25 0 3140900399999 SUBENT 31409004 20100220 31443140900400001 BIB 4 4 3140900400002 REACTION (37-RB-85(N,P)36-KR-85-M,,SIG) 3140900400003 DECAY-DATA (36-KR-85-M,4.48HR,DG,151.,.761) 3140900400004 MONITOR (37-RB-85(N,P)36-KR-85-M,,SIG) Absolute measurement. 3140900400005 DECAY-MON (36-KR-85-M,4.48HR,DG,151.,.761) 3140900400006 ENDBIB 4 0 3140900400007 COMMON 3 3 3140900400008 EN-NRM MONIT MONIT-ERR 3140900400009 MEV MB MB 3140900400010 14.58 4.38 0.13 3140900400011 ENDCOMMON 3 0 3140900400012 DATA 4 5 3140900400013 EN EN-ERR DATA ERR-T 3140900400014 MEV MEV MB MB 3140900400015 13.47 0.10 4.06 0.13 3140900400016 13.83 0.07 4.28 0.14 3140900400017 14.43 0.10 4.33 0.14 3140900400018 14.70 0.14 4.40 0.14 3140900400019 14.80 0.15 4.38 0.14 3140900400020 ENDDATA 7 0 3140900400021 ENDSUBENT 20 0 3140900499999 SUBENT 31409005 20100220 31443140900500001 BIB 4 4 3140900500002 REACTION (37-RB-85(N,A)35-BR-82,,SIG) 3140900500003 DECAY-DATA (35-BR-82-G,35.3HR,DG,776.,.833) 3140900500004 MONITOR (37-RB-85(N,A)35-BR-82,,SIG) Absolute measurement. 3140900500005 DECAY-MON (35-BR-82-G,35.3HR,DG,776.,.833) 3140900500006 ENDBIB 4 0 3140900500007 COMMON 3 3 3140900500008 EN-NRM MONIT MONIT-ERR 3140900500009 MEV MB MB 3140900500010 14.58 5.88 0.21 3140900500011 ENDCOMMON 3 0 3140900500012 DATA 4 5 3140900500013 EN EN-ERR DATA ERR-T 3140900500014 MEV MEV MB MB 3140900500015 13.47 0.10 4.11 0.14 3140900500016 13.83 0.07 4.75 0.17 3140900500017 14.43 0.10 5.73 0.20 3140900500018 14.70 0.14 5.93 0.21 3140900500019 14.80 0.15 6.15 0.22 3140900500020 ENDDATA 7 0 3140900500021 ENDSUBENT 20 0 3140900599999 SUBENT 31409006 20100220 31443140900600001 BIB 5 5 3140900600002 REACTION (37-RB-87(N,P)36-KR-87,,SIG) 3140900600003 DECAY-DATA (36-KR-87,76.D,DG,403.,.483) 3140900600004 MONITOR (37-RB-87(N,P)36-KR-87,,SIG) Absolute measurement. 3140900600005 DECAY-MON (36-KR-87,76.D,DG,403.,.483) 3140900600006 HISTORY (19930120U) Hw.-Mispunch in DECAY-DATA corrected.- 3140900600007 ENDBIB 5 0 3140900600008 COMMON 3 3 3140900600009 EN-NRM MONIT MONIT-ERR 3140900600010 MEV MB MB 3140900600011 14.58 10.2 0.3 3140900600012 ENDCOMMON 3 0 3140900600013 DATA 4 5 3140900600014 EN EN-ERR DATA ERR-T 3140900600015 MEV MEV MB MB 3140900600016 13.47 0.10 6.72 0.27 3140900600017 13.83 0.07 8.19 0.33 3140900600018 14.43 0.10 9.47 0.39 3140900600019 14.70 0.14 11.0 0.5 3140900600020 14.80 0.15 10.4 0.4 3140900600021 ENDDATA 7 0 3140900600022 ENDSUBENT 21 0 3140900699999 SUBENT 31409007 20100220 31443140900700001 BIB 4 4 3140900700002 REACTION (37-RB-87(N,2N)37-RB-86,,SIG) 3140900700003 DECAY-DATA (37-RB-86-G,18.82D,DG,1078.8,.088) 3140900700004 MONITOR (37-RB-87(N,2N)37-RB-86,,SIG) Absolute measurement. 3140900700005 DECAY-MON (37-RB-86-G,18.82D,DG,1078.8,.088) 3140900700006 ENDBIB 4 0 3140900700007 COMMON 3 3 3140900700008 EN-NRM MONIT MONIT-ERR 3140900700009 MEV MB MB 3140900700010 14.58 1215. 36. 3140900700011 ENDCOMMON 3 0 3140900700012 DATA 4 5 3140900700013 EN EN-ERR DATA ERR-T 3140900700014 MEV MEV MB MB 3140900700015 13.47 0.10 1049. 39. 3140900700016 13.83 0.07 1073. 40. 3140900700017 14.43 0.10 1199. 44. 3140900700018 14.70 0.14 1233. 46. 3140900700019 14.80 0.15 1252. 46. 3140900700020 ENDDATA 7 0 3140900700021 ENDSUBENT 20 0 3140900799999 ENDENTRY 7 0 3140999999999