超强激光等离子体中钻孔效应的二维粒子模拟
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摘要: 当非均匀超短脉冲强激光照射均匀分布的过稠密等离子体时, 相对论效应导致电子质量增大,相对论电子等离子体频率减小,激光能更深地进入等离子体产生强烈吸收。由于入射激光的径向不均匀性,钻孔效应显著。通过二维粒子模拟结果清晰地观察到了等离子体通道的产生。
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关键词:
- 激光等离子体相互作用 /
- 超短脉冲激光 /
- 等离子体粒子模拟 /
- 钻孔效应
Abstract: As an intense,nonuniform ultrashortlaser pulse sticks the over dense plasma,theelectron mass increases and the electron plasma frequency decreases due to relativistic effect.Laser wave can penetrate the plasma more deeply. When laser beam is nonuniform,a channel forms as a result of strong pond eromotive force which is clearly shown by two dimensional particle simulation. -
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