非均匀圆柱形等离子体波导的绝对参数不稳定性

Proceedings of the Fifteenth National Radio Science Conference. NRSC '98 (Cat. No.98EX109) Pub Date : 1998-02-24 DOI:10.1109/NRSC.1998.711520

V. Demchenko, K. El-Shorbagy, S. Khalil, N. G. Zaki

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引用次数: 1

摘要

本文分析了空间等离子体不均匀性对高频强电场作用下磁化圆柱波导中静电波参数不稳定性的影响。结果表明，考虑到空间非均匀性，会导致:(1)不稳定波在等离子体体积的有限区域内定位，(2)泵浦波幅值的阈值增加，超过该阈值会发生参数放大，(3)不稳定波增长率的值会降低。

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Absolute parametric instability in a nonuniform cylindrical plasma waveguide

The paper reports an analysis of the effect of spatial plasma nonuniformity on the parametric instability of electrostatic waves in magnetized cylindrical waveguides subjected to an intense HF electric field. It is shown that allowance for the spatial nonuniformity leads: (1) to localization of an unstable wave in a finite region of the plasma volume, (2) to an increase in the threshold value of the pump wave amplitude above which parametric amplification occurs and (3) to a decrease in the value of the growth rate of the unstable waves.

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Proceedings of the Fifteenth National Radio Science Conference. NRSC '98 (Cat. No.98EX109)

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