等离子体介质的关闭对行波的影响

IEEE 1989 International Conference on Plasma Science Pub Date : 1989-05-22 DOI:10.1109/PLASMA.1989.165988

D. Kalluri

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引用次数: 0

摘要

众所周知，突然产生的等离子体介质频率为ω /sub p/，将频率为ω /sub 0/的行波分裂成两个频率为ω /sub 1.2/=+或-(ω /sub 0//sup 2/+ ω /sub p//sup 2/)/sup 1/2/的新波。频率的负值表示是反射波。等离子体介质的突然坍缩对频率为ω /sub 0/的行波的影响已被作者证明是产生两个频率为ω /sub 1.2/=+或-(ω /sub 0//sup 2/- ω /sub p//sup 2/)/sup 1/2/的新波。只有当/下标0/> /下标p/时这些才是传播波。反射波功率最大为入射波功率的3.7%。图中显示了新波的频率和它们所携带的功率随入射波频率的变化。得到了等离子体介质逐渐坍缩情况下的数值解。对于粒子密度缓慢衰减的情况，得到了近似的wkb型解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Effect of switching-off of a plasma medium on a traveling wave

It is known that a sudden creation of a plasma medium of plasma frequency omega /sub p/ splits a traveling wave of frequency omega /sub 0/ into two new waves of frequencies omega /sub 1.2/=+or-( omega /sub 0//sup 2/+ omega /sub p//sup 2/)/sup 1/2/. The negative value for the frequency indicates a reflected wave. The effect of a sudden collapse of the plasma medium on a traveling wave of frequency omega /sub 0/ has been shown by the author to be the creation of two new waves of frequencies omega /sub 1.2/=+or-( omega /sub 0//sup 2/- omega /sub p//sup 2/)/sup 1/2/. These are propagating waves only if omega /sub 0/> omega /sub p/. The power in the reflected wave has a maximum of 3.7% of the power in the incident wave. The variation in the frequencies of the new waves and power carried by them with the incident wave frequency is shown. A numerical solution has been obtained for the case of a gradual collapse of the plasma medium. For the case of a slow decay of the particle density, an approximate WKB-type solution has been obtained.<>

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来源期刊

IEEE 1989 International Conference on Plasma Science

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0.10

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0.00%

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