When the external RF frequency is much bigger than ion plasma frequency, ions answer average field.
当外加射频频率远大于离子等离子体频率，离子响应平均场，离子的密度分布几乎不随时间变化；
It has been shown that when the RF frequency is less than the ion plasma frequency, the ion flux density will strongly depend on the time.
结果表明，当射频场的频率小于或等于离子等离子体频率时，离子流密度明显地随时间变化。
In this paper accurate solutions for the single frequency heating conditions have been obtained based on equations derived for laser plasma electron-ion coupling.
本文在导出激光等离子体电子、离子耦合方程的基础上求得了单频加热无穷行列特征矩阵的准确解；
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