激光等离子体共振吸收的波碎过程

WAVEBREAKING DUE TO RESONANT ABSORPTION IN PLASMAS PRODUCED BY LASER BEAM

用理论分析和粒子模拟方法对激光等离子体共振吸收的波碎过程进行了研究．讨论了温度参量对共振吸收的影响，发现在共振区域电子不但会被其在静电波势阱中的振荡加热，也会被朗道阻尼所加热；在低密度区域还存在着湍动加速机制．在一定的功率水平下。

Wavebreaking due to resonant absorption in plasmas produced by the laser beam is studied using theoretical analysis and particle simulation of plasma.The temperature effects on wavebreaking and resonant absorption are also considered.It is indicated that those electrons in the resonant region are not only oscillating heated,but also accelarated by Landau damping.There exists a turbulence accelaration mechanism in underdense plasma region.Second wavebreaking can also be observed in certain power density of laser light.