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Chinese Physics C> 1998, Vol. 22> Issue(12) : 1068-1073 

Independent Yield Measurement for the Hg-Isotope Products From 600MeV 18O+natPb (Thick Target) System (Ⅱ) Experiment Results and Analysis

  •  Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000

  • The average independent production cross sections of the radioactive Hg isotopes in the mass range of 180 to 209, produced in 600MeV-18O bombardment on (nat)Pb (thick target), were measured. The production mechanisms for the Hg-isotope products at different mass section were discussed by means of a comparison with the Hg-isotope distribution obtained in 600 MeV proton bombardment on natPb. The measlesment results were also compared with the Ir-isotope distribution observed from relativistic 197Au projectile fragmentation reaction. The present experiment results showed that using intermediary-energy heavy ion beams bombarding neutron-rich heavy targets is a favourable reaction to produce neutron-rich heavy residues.
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    [1] Summerer K et al. Phys.,Rev, 1990, C42:2546─2561 [2]Dufouz J P et al. NucL Phys., 1982, A387:157c─175c[3] Hufner J Phys.Rep.,1985, 125:129—185 [4]Friedlandez E M et al.In:Treatise on Heavy Ion Scieme,edited by DA.Bromley(plenum,New York)1985,4:424─451[5]Ravn H L. Phys.Rep., 1979, 54:201─259 [6]Jonson B et al. CERN Repory,1981, 81—09:640—643[7]Schmidtt K–H et al. Phys. Lett, 1993, B300:313─316[8]Zhao Jinhua et al.High Energy Phys. Nucl.Phys.(in Chinese), 1998, 22(10):959(赵进华等.高能物理与核物理,1998,22(10):959) [9]Zheng Jiwen et al. Nuclear Chemistry and Radiochemistry,to be published [10]Nuclear Wallet Card(Fifth edihon), edited by JAGDISH KTULI, National Nuclear Deta Center for The U.S. Nuclear Deta Network. [11]REUS U, Westmeiez W. Atomic Deta and Nuclear Deta Tables, 1983, 29:1─406 [12]Zhang Li et al. Chin. Phys. Lett,1997, 14:507─510 [13]Zhang Li et al. Phys. Rev., 1998,C58:156—163[14]Ravn H L. Nucl.Inst. Meth., 1994, B88:441─461 [15]Shirley V S. Nuclear Data Sheets,1990, 61:521─621

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Zhang Li, Zheng Jiwen, Zhao Jinhua, Qin Zhi, Yang Yongfeng, Hu Qingyuan, Zhang Chun, Wang Jicheng, Guo Tianrui and Jin Genming. Independent Yield Measurement for the Hg-Isotope Products From 600MeV 18O+natPb (Thick Target) System (Ⅱ) Experiment Results and Analysis[J]. Chinese Physics C, 1998, 22(12): 1068-1073.
Zhang Li, Zheng Jiwen, Zhao Jinhua, Qin Zhi, Yang Yongfeng, Hu Qingyuan, Zhang Chun, Wang Jicheng, Guo Tianrui and Jin Genming. Independent Yield Measurement for the Hg-Isotope Products From 600MeV 18O+natPb (Thick Target) System (Ⅱ) Experiment Results and Analysis[J]. Chinese Physics C, 1998, 22(12): 1068-1073. shu
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Received: 1997-10-21
Revised: 1900-01-01
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Independent Yield Measurement for the Hg-Isotope Products From 600MeV 18O+natPb (Thick Target) System (Ⅱ) Experiment Results and Analysis

    Corresponding author: Zhang Li,
  • Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000
  • Received Date: 1997-10-21
  • Accepted Date: 1900-01-01
  • Available Online: 1998-12-05

Abstract: The average independent production cross sections of the radioactive Hg isotopes in the mass range of 180 to 209, produced in 600MeV-18O bombardment on (nat)Pb (thick target), were measured. The production mechanisms for the Hg-isotope products at different mass section were discussed by means of a comparison with the Hg-isotope distribution obtained in 600 MeV proton bombardment on natPb. The measlesment results were also compared with the Ir-isotope distribution observed from relativistic 197Au projectile fragmentation reaction. The present experiment results showed that using intermediary-energy heavy ion beams bombarding neutron-rich heavy targets is a favourable reaction to produce neutron-rich heavy residues.

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