稀释相对论冷等离子体中的平面波
On plane waves in diluted relativistic cold plasmas
摘要：
我们简要地报道了一些精确的结果[G. Fiore，arXiv：1312.4665预印本，发表在J. Phys. A]关于相对论冷等离子体中的平面波。如果最初处于静止状态的等离子体被一个横平面电磁行波所到达，那么在密度为零的极限下，它的运动非常简单地依赖于这个波，否则可以通过一个迭代过程来确定，该过程的精度随时间或等离子体密度而降低。因此，人们可以特别描述一个非常强而短的激光脉冲对等离子体的冲击，并确定“弹弓效应”的条件[G。菲奥雷河费代尔大学De Angelis，arXiv：1309.1400预印本]发生。在真空中的带电测试粒子的运动受到一个相同类型的波也被确定，对于任何初始速度。
英文摘要：
We briefly report on some exact results [G. Fiore, arXiv:1312.4665 preprint, to appear in J. Phys. A] regarding plane waves in a relativistic cold plasma. If the plasma, initially at rest, is reached by a transverse plane electromagnetic travelling-wave, then its motion has a very simple dependence on this wave in the limit of zero density, otherwise can be determined by an iterative procedure whose accuracy decreases with time or the plasma density. Thus one can describe in particular the impact of a very intense and short laser pulse onto a plasma and determine conditions for the "slingshot effect" [G. Fiore, R. Fedele, U. De Angelis, arXiv:1309.1400 preprint] to occur. The motion in vacuum of a charged test particle subject to a wave of the same kind is also determined, for any initial velocity.
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