中国物理B ›› 2009, Vol. 18 ›› Issue (9): 4049-.doi: 10.1088/1674-1056/18/9/072

• • 上一篇    

Analytical solutions for the slow neutron capture process of heavy element nucleosynthesis

吴开谡   

  1. Beijing University of Chemical Technology, Beijing 100029, China
  • 收稿日期:2009-01-16 修回日期:2009-02-24 出版日期:2009-09-20 发布日期:2009-09-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10447141 ) and the Youth Foundation of Beijing University of Chemical Technology, China (Grant No QN0622).

Analytical solutions for the slow neutron capture process of heavy element nucleosynthesis

Wu Kai-Su(吴开谡)†   

  1. Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2009-01-16 Revised:2009-02-24 Online:2009-09-20 Published:2009-09-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10447141 ) and the Youth Foundation of Beijing University of Chemical Technology, China (Grant No QN0622).

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摘要： In this paper, the network equation for the slow neutron capture process (s-process) of heavy element nucleosynthesis is investigated. Dividing the s-process network reaction chains into two standard forms and using the technique of matrix decomposition, a group of analytical solutions for the network equation are obtained. With the analytical solutions, a calculation for heavy element abundance of the solar system is carried out and the results are in good agreement with the astrophysical measurements.

Abstract: In this paper, the network equation for the slow neutron capture process (s-process) of heavy element nucleosynthesis is investigated. Dividing the s-process network reaction chains into two standard forms and using the technique of matrix decomposition, a group of analytical solutions for the network equation are obtained. With the analytical solutions, a calculation for heavy element abundance of the solar system is carried out and the results are in good agreement with the astrophysical measurements.

Key words: s-process, network equation, analytical solution, element abundance

中图分类号:  (3H-, 3He-, and 4He-induced reactions)

  • 25.55.-e
25.10.+s (Nuclear reactions involving few-nucleon systems) 26.35.+c (Big Bang nucleosynthesis) 27.20.+n (6 ≤ A ≤ 19) 27.30.+t (20 ≤ A ≤ 38) 97.10.Cv (Stellar structure, interiors, evolution, nucleosynthesis, ages)