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
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
收藏
页码:362 / 374
页数:13
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