中国物理B ›› 2009, Vol. 18 ›› Issue (3): 1147-1152.doi: 10.1088/1674-1056/18/3/051

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The propagation and deposition of fast muons in dense DT mixture

沈百飞1, 张晓梅1, 金张英1, 王凤超1, 李雪梅2   

  1. (1)State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; (2)State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;Department of Physics, School of Sciences, Guangxi University for Nationalities, Nanning 530006, China
  • 收稿日期:2008-07-08 修回日期:2008-08-13 出版日期:2009-03-20 发布日期:2009-03-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10675155) and the National Basic Research of China (Grant No 2006CB806004).

The propagation and deposition of fast muons in dense DT mixture

Li Xue-Mei(李雪梅)a)b)†, Shen Bai-Fei(沈百飞)a), Zhang Xiao-Mei(张晓梅)a), Jin Zhang-Ying(金张英)a), and Wang Feng-Chao(王凤超)a)   

  1. a State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; b Department of Physics, School of Sciences, Guangxi University for Nationalities, Nanning 530006, China
  • Received:2008-07-08 Revised:2008-08-13 Online:2009-03-20 Published:2009-03-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10675155) and the National Basic Research of China (Grant No 2006CB806004).

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摘要： The propagation of the fast muon population mainly due to collisional effect in a dense deuterium--tritium (DT for short) mixture is investigated and analysed within the framework of the relativistic Fokker--Planck equation. Without the approximation that the muons propagate straightly in the DT mixture, the muon penetration length, the straggling length, and the mean transverse dispersion radius are calculated for different initial energies, and especially for different densities of the densely compressed DT mixture in our suggested muon-driven fast ignition (FI). Unlike laser-driven FI requiring super-high temperature, muons can catalyze DT fusion at lower temperatures and may generate an ignition sparkle before the self-heating fusion follows. Our calculation is important for the feasibility and the experimental study of muon-driven FI.

关键词: fast muons, propagation, deposition

Abstract: The propagation of the fast muon population mainly due to collisional effect in a dense deuterium--tritium (DT for short) mixture is investigated and analysed within the framework of the relativistic Fokker--Planck equation. Without the approximation that the muons propagate straightly in the DT mixture, the muon penetration length, the straggling length, and the mean transverse dispersion radius are calculated for different initial energies, and especially for different densities of the densely compressed DT mixture in our suggested muon-driven fast ignition (FI). Unlike laser-driven FI requiring super-high temperature, muons can catalyze DT fusion at lower temperatures and may generate an ignition sparkle before the self-heating fusion follows. Our calculation is important for the feasibility and the experimental study of muon-driven FI.

Key words: fast muons, propagation, deposition

中图分类号:  (Fast ignition of compressed fusion fuels)

  • 52.57.Kk
52.65.Ff (Fokker-Planck and Vlasov equation) 28.52.Cx (Fueling, heating and ignition) 52.50.Jm (Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.))