The low threshold parametric decay instabilities leading to anomalous phenomena at ECRH in toroidal devices

Journal Article · Wed Feb 12 00:00:00 EST 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4864516· OSTI ID:22263851

Gusakov, E.; Popov, A.; Saveliev, A. ^[1]

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1. Ioffe Physical Technical Institute of RAS, St. Petersburg (Russian Federation)

A possibility of 3D electron Bernstein wave trapping in intensive magnetic field aligned density fluctuation or blob in toroidal plasma is demonstrated. Semi-analytic approach for description of associated plasma cavity is developed. A mechanism of low-threshold parametric decay instability driven by 2{sup nd} harmonic extraordinary pump microwave and leading to excitation of localized electron Bernstein wave and low frequency heavily damped oscillations is proposed and analyzed.

• OSTI ID: 22263851
• Journal Information: AIP Conference Proceedings, Vol. 1580, Issue 1; Conference: 20. topical conference on radiofrequency power in plasmas, Sorrento (Italy), 25-28 Jun 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BERNSTEIN MODE
DECAY INSTABILITY
ECR HEATING
ELECTRONS
MAGNETIC FIELDS
PLASMA WAVES