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)
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
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.
Received: 08 July 2008
Revised: 13 August 2008
Accepted manuscript online:
(Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.))
Fund: Project supported by the National
Natural Science Foundation of China (Grant No 10675155) and the
National Basic Research of China (Grant No 2006CB806004).
Cite this article:
Li Xue-Mei(李雪梅), Shen Bai-Fei(沈百飞), Zhang Xiao-Mei(张晓梅), Jin Zhang-Ying(金张英), and Wang Feng-Chao(王凤超) The propagation and deposition of fast muons in dense DT mixture 2009 Chin. Phys. B 18 1147
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