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.
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.
基金
supported by the National Natural Science Foundation of China (Grant No 10675155)
the National Basic Research of China (Grant No 2006CB806004)
