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Title: Saturation of low-threshold two-plasmon parametric instability of an extraordinary wave in an inhomogeneous plasma

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.
Authors:
;  [1]
  1. Russian Academy of Sciences, Ioffe Physical Technical Institute (Russian Federation)
Publication Date:
OSTI Identifier:
22472117
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 121; Journal Issue: 2; Other Information: Copyright (c) 2015 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; DECAY INSTABILITY; ELECTRONS; EXCITATION; INHOMOGENEOUS PLASMA; LOWER HYBRID CURRENT DRIVE; LOWER HYBRID HEATING; PARAMETRIC INSTABILITIES; PLASMA DENSITY; PLASMONS; POLARIZATION