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arXiv physics/0409025physics.plasm-ph
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广义EM波引起的非线性回旋共振加速度

Nonlinear cyclotron-resonance accelerations by a generalized EM wave

Kazuhiro Akimoto, Hitoshi Hojo

摘要:

本文研究了在外加磁场中一维电磁色散脉冲对粒子的加速作用。结果表明,随着脉冲长度和幅度的变化,回旋共振可分为三种状态。也就是说,随着脉冲幅度的增加,渡越时间回旋共振加速[CRA]演变为相位捕获,并反射粒子。振幅和波色散以及脉冲长度强烈地影响这些加速度。在这两个制度之间的共振速度的量子化的有趣的现象也进行了研究。这种新的机制可能会导致波放大在一些离散的频率以外的回旋频率。

英文摘要:

Particle accelerations by a 1D, EM, dispersive pulse in an external magnetic field are investigated. It is found that the well-known cyclotron resonance may be classified into three regimes as the length and/or the amplitude of the pulse are varied. Namely, as the pulse amplitude increases, the transit-time cyclotron-resonance acceleration [CRA] evolves to phase trapping, and reflect particles. The amplitude and wave dispersion as well as the pulse length strongly affect those accelerations. The interesting phenomena of quantization of resonance velocities in between the two regimes are also investigated. This new mechanism may lead to wave amplification at some discrete frequencies other than the cyclotron frequency.

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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