ENTRY A0717 20050103 A061A071700000001 SUBENT A0717001 20050103 A061A071700100001 BIB 14 119 A071700100002 TITLE Independent production cross sections for Hg isotopes A071700100003 from the reaction of 600-MeV 18-O with Pb A071700100004 REFERENCE (J,PR/C,70,024603,2004) A071700100005 AUTHOR (Zhang Li, Zheng Jiwen, Zhao Jinhua, Yang Yongfeng, A071700100006 Qin Zhi, Hu Qingyuan, Zhang Chun, Wang Jicheng, A071700100007 Wei Hao) A071700100008 INSTITUTE (3CPRIMP) A071700100009 REL-REF (N,A0504001,ZHANG LI+,J,PR/C,58,156,1998) A071700100010 (N,,ZHAO JINHUA+,J,CST,31,530,1997) In Chinese. A071700100011 The two papers contain more detailed information about A071700100012 experimental device. A071700100013 (R,,V.REUS+,J,AND,29,1,1983) Decay data. A071700100014 COMMENT -By authors. To evaluate independent cross sections A071700100015 for Hg isotopes, special care has been exercised over A071700100016 the following difficulties: A071700100017 1. Half-lives of some Hg isotopes are very short in A071700100018 comparison with the time elapsed before starting the A071700100019 measurement (typically 20 S after irradiation); A071700100020 2. For some Hg isotopes gamma-decay schemes and/or A071700100021 absolute gamma-ray branching ratios have not been A071700100022 measured; A071700100023 3. Gamma rays which should be characteristic of some A071700100024 Hg isotopes including relevant daughter or A071700100025 granddaughter nuclides are too weak to be identified orA071700100026 overlapping with other gamma rays. A071700100027 METHOD (EXTB) The average beam was 2.2 particle nA. A071700100028 (THERM) An on-line gas thermochromatographic separationA071700100029 device combined with a running-rabbit system A071700100030 (COINC) Veto signals from beta+ decays. A071700100031 (ACTIV) Three different irradiation-detection periods A071700100032 were employed: first, the cycle was a 120-S A071700100033 irradiation followed a 420-S g-ray detection, and a A071700100034 total of 143 samples were measured; A071700100035 second, 10-min irradiation followed by 60-min detectionA071700100036 and three samples; A071700100037 third, 100-min irradiation followed by 48-H detection A071700100038 for one sample. A071700100039 (GSPEC) A071700100040 ANALYSIS (DECAY,AREA) A071700100041 SAMPLE A molten natural lead target with a thickness of about A071700100042 5.2 g/cm2 (thick enough to stop the 600-MeV 18O A071700100043 incident beam). The temperature of the molten lead A071700100044 target material was continuously kept at about 700 C A071700100045 during the 18-O beam irradiation. A071700100046 DETECTOR (HPGE) A071700100047 (BGO) A large bismuth germanate detector (14X7X5 cm3) A071700100048 and a beta-ray detector (unknown type) A071700100049 FACILITY (ACCEL,3CPRIMP) An intermediate energy heavy-ion A071700100050 accelerator at the Heavy Ion Research Facility A071700100051 HISTORY (20050101C) By F.Ch A071700100052 (20050103U) Last checking has been done. A071700100053 ERR-ANALYS (ERR-T) Measurement errors of the experimental cross A071700100054 sections are estimated to be 15% to 30%, including the A071700100055 systematic error from collection efficiency A071700100056 determination, statistical error of gamma-ray counts, A071700100057 and count contamination to the characteristic gamma- A071700100058 ray used in cross-section calculation from neighboring A071700100059 gamma rays. A probable additional error would come A071700100060 from the uncertainty of the data for gamma-ray A071700100061 branching ratio. A071700100062 A probable example is the unusual lower measurement A071700100063 cross section for 193-Hg, which has not been clarified A071700100064 clear so far. A071700100065 DECAY-DATA (80-HG-180,3.0SEC) A071700100066 ((1.)75-RE-180,,DG,902.8) A071700100067 (80-HG-181,3.6SEC) A071700100068 ((2.)77-IR-181,,DG,107.6) A071700100069 ((2.)75-RE-181,,DG,365.5) A071700100070 (80-HG-182,10.8SEC) A071700100071 ((3.)79-AU-182,,DG,154.9) A071700100072 ((3.)77-IR-182,,DG,127.1) A071700100073 (80-HG-183,9.4SEC) A071700100074 ((4.)76-OS-183-G,,DG,381.8) A071700100075 ((5.)76-OS-183-M,,DG,1102.0) A071700100076 ((6.)80-HG-184,30.6SEC,DG,156.0,,DG,236.2) A071700100077 ((6.)79-AU-184-G,,DG,163.2) Au-184 has isomer state A071700100078 (half-life=46sec).it is unknown,what decay was used A071700100079 For analisis. A071700100080 (80-HG-185-G,49.1SEC) A071700100081 ((7.)77-IR-185,,DG,1828.8) A071700100082 ((8.)80-HG-186,1.38MIN,DG,111.9) A071700100083 ((9.)80-HG-186,1.38MIN,DG,227.8) A071700100084 ((10.)77-IR-186-G,,DG,434.8) A071700100085 ((11.)77-IR-186-M,,DG,987.0) A071700100086 (80-HG-187-G,2.4MIN) A071700100087 (80-HG-187-M,1.93MIN) A071700100088 ((12.)78-PT-187,,DG,709.2) A071700100089 ((13.)80-HG-188,3.25MIN,DG,190.0) A071700100090 ((13.)79-AU-188,,DG,266.0) A071700100091 (80-HG-189-G,7.6MIN) A071700100092 ((14.)79-AU-189-M,,DG,166.7) A071700100093 (80-HG-189-M,8.6MIN) A071700100094 ((15.)80-HG-190,20.MIN,DG,142.7) A071700100095 ((16.)80-HG-190,20.MIN,DG,171.5) A071700100096 ((17.)79-AU-190,,DG,301.8) A071700100097 ((18.)79-AU-190,,DG,296.) A071700100098 (80-HG-191-G,49.MIN) A071700100099 ((19.)79-AU-191-G,,DG,277.9,,DG,284.1) A071700100100 ((39.)80-HG-191-M,50.8MIN,DG,578.8) A071700100101 ((20.)80-HG-192,4.85HR,DG,274.8) A071700100102 ((21.)80-HG-192,4.85HR,DG,306.6) A071700100103 ((22.)79-AU-192-G,,DG,316.5) A071700100104 ((23.)80-HG-193-G,3.80HR,DG,573.3) A071700100105 ((24.)80-HG-193-M,11.8HR,DG,258.0) A071700100106 ((25.)80-HG-195-G,9.9HR,DG,180.3) A071700100107 ((26.)80-HG-195-G,9.9HR,DG,779.8) A071700100108 ((27.)80-HG-195-M,41.6HR,DG,560.3) A071700100109 ((28.)80-HG-197-G,64.1HR,DG,191.1) A071700100110 ((29.)80-HG-197-M,23.8HR,DG,133.9) A071700100111 ((30.)80-HG-199-M,49.MIN,DG,374.1) A071700100112 ((31.)80-HG-199-M,49.MIN,DG,158.4) A071700100113 ((32.)80-HG-203,46.6D,DG,279.) A071700100114 ((33.)80-HG-205,5.2MIN,DG,203.7) A071700100115 ((34.)80-HG-206,8.15MIN,DG,305.1) A071700100116 ((35.)80-HG-207,2.9MIN,DG,351.3) A071700100117 ((36.)80-HG-208,41.MIN,DG,583.1) A071700100118 (80-HG-209,35.SEC) A071700100119 ((37.)81-TL-209,,DG,465.1) A071700100120 ((38.)81-TL-209,,DG,324.0) A071700100121 ENDBIB 119 0 A071700100122 COMMON 1 3 A071700100123 EN A071700100124 MEV A071700100125 600. A071700100126 ENDCOMMON 3 0 A071700100127 ENDSUBENT 126 0 A071700199999 SUBENT A0717002 20050103 A061A071700200001 BIB 1 1 A071700200002 REACTION (82-PB-0(8-O-16,X)ELEM/MASS,IND,SIG) A071700200003 ENDBIB 1 0 A071700200004 COMMON 1 3 A071700200005 ELEMENT A071700200006 NO-DIM A071700200007 80. A071700200008 ENDCOMMON 3 0 A071700200009 DATA 5 40 A071700200010 MASS ISOMER DATA ERR-T DECAY-FLAG A071700200011 NO-DIM NO-DIM MICRO-B MICRO-B NO-DIM A071700200012 180. 17. 54. 1. A071700200013 181. 55. 14. 2. A071700200014 182. 38. 18. 3. A071700200015 183. 36. 11. 4. A071700200016 183. 32. 9.7 5. A071700200017 184. 82. 16. 6. A071700200018 185. 134. 27. 7. A071700200019 186. 235. 35. 8. A071700200020 186. 232. 37. 9. A071700200021 186. 161. 32. 10. A071700200022 186. 93. 19. 11. A071700200023 187. 277. 50. 12. A071700200024 188. 541. 81. 13. A071700200025 189. 166. 20. 14. A071700200026 189. 1. 449. 72. 14. A071700200027 190. 948. 142. 15. A071700200028 190. 1017. 150. 16. A071700200029 190. 758. 136. 17. A071700200030 190. 704. 127. 18. A071700200031 191. 0. 542. 95. 19. A071700200032 191. 1. 584. 80. 39. A071700200033 192. 1327. 200. 20. A071700200034 192. 1255. 196. 21. A071700200035 192. 1092. 273. 22. A071700200036 193. 1357. 203. 23. A071700200037 193. 848. 127. 24. A071700200038 195. 0. 1357. 203. 25. A071700200039 195. 0. 1080. 173. 26. A071700200040 195. 1. 475. 70. 27. A071700200041 197. 0. 492. 74. 28. A071700200042 197. 1. 1479. 222. 29. A071700200043 199. 1. 299. 60. 30. A071700200044 199. 1. 293. 59. 31. A071700200045 203. 852. 300. 32. A071700200046 205. 460. 115. 33. A071700200047 206. 81. 16. 34. A071700200048 207. 15.4 5. 35. A071700200049 208. 5. 1.8 36. A071700200050 209. 1.8 0.6 37. A071700200051 209. 2.1 0.7 38. A071700200052 ENDDATA 42 0 A071700200053 ENDSUBENT 52 0 A071700299999 ENDENTRY 2 0 A071799999999