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arXiv 0910.4368physics.plasm-ph
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模拟相对论等离子体中的碰撞

Modelling collisions in a relativistic plasma

Adam Noble, David Burton

摘要:

推广Lenard和Bernstein的工作,我们引入一个新的,完全相对论性的模型来描述碰撞等离子体。像福克-普朗克算子一样,这个方程代表速度扩散并保持粒子数。然而,与福克-普朗克算子不同,它在分布函数中是线性的,因此更适合流体处理。通过取矩,我们导出了一个新的流体模型,并证明了碰撞对朗缪尔波的阻尼效应。

英文摘要:

Generalising the work of Lenard and Bernstein, we introduce a new, fully relativistic model to describe collisional plasmas. Like the Fokker-Planck operator, this equation represents velocity diffusion and conserves particle number. However, unlike the Fokker-Planck operator it is linear in the distribution function, and so more amenable to a fluid treatment. By taking moments, we derive a new fluid model, and demonstrate the damping effects of collisions on Langmuir waves.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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