Saturation of Low-Threshold Two-Plasmon Parametric Instability of an Extraordinary Wave in an Inhomogeneous Plasma

被引：15

作者：

Popov, A. Yu. ^{[1
]}

Gusakov, E. Z. ^{[1
]}

机构：

[1] Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

来源：

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS | 2015年 / 121卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

DECAY INSTABILITIES; RESONANCE; TOKAMAKS;

D O I：

10.1134/S106377611508021X

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Saturation of low-threshold parametric decay instability of an electron cyclotron wave of extraordinary polarization is analyzed; the development of this instability near a local maximum of the plasma density profile gives rise to two upper hybrid (UH) plasmons at frequencies close to the half of the pump wave frequency. As a saturation mechanism of this instability, a cascade decay of daughter UH waves is used, which leads to the excitation of secondary UH and lower hybrid (LH) waves that are also radially localized in the vicinity of a local maximum and minimum of the plasma density profile, respectively.

引用

页码：362 / 374

页数：13

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