中国物理B ›› 2007, Vol. 16 ›› Issue (8): 2338-2342.doi: 10.1088/1009-1963/16/8/030

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Optimal reactions for synthesis of nuclides of element 108

刘祖华1, 周宏余2   

  1. (1)China Institute of Atomic Energy, Beijing 102413, China; (2)Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Beijing Normal University, Beijing 100875, China
  • 收稿日期:2006-02-23 修回日期:2006-12-04 出版日期:2007-08-20 发布日期:2007-08-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grants Nos 10235020 and 10235030).

Optimal reactions for synthesis of nuclides of element 108

Liu Zu-Hua (刘祖华)a)† and Zhou Hong-Yu(周宏余)b)   

  1. a China Institute of Atomic Energy, Beijing 102413, China; b Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Beijing Normal University, Beijing 100875, China
  • Received:2006-02-23 Revised:2006-12-04 Online:2007-08-20 Published:2007-08-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grants Nos 10235020 and 10235030).

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摘要： The cross sections for the production of nuclides of element 108 via hot fusion evaporation reactions are studied using a two-parameter Smoluchowski equation. The optimal reactions for the synthesis of new nuclides of element 108 with mass numbers from 266 to 271 are suggested. The macroscopic-microscopic approach predicts a strong deformed shell closure at Z \approx 108 and N=162. The synthesis of more nuclides of element 108 is meaningful to the confirmation of the existence of this deformed shell closure.

关键词: diffused barrier, Smoluchowski equation, superheavy nuclei

Abstract: The cross sections for the production of nuclides of element 108 via hot fusion evaporation reactions are studied using a two-parameter Smoluchowski equation. The optimal reactions for the synthesis of new nuclides of element 108 with mass numbers from 266 to 271 are suggested. The macroscopic-microscopic approach predicts a strong deformed shell closure at $Z \approx 108$ and $N=162$. The synthesis of more nuclides of element 108 is meaningful to the confirmation of the existence of this deformed shell closure.

Key words: diffused barrier, Smoluchowski equation, superheavy nuclei

中图分类号:  (Fusion and fusion-fission reactions)

  • 25.70.Jj
21.10.-k (Properties of nuclei; nuclear energy levels) 25.70.Gh (Compound nucleus) 27.90.+b (A ≥ 220)