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Wave dispersoin and resonant deposition profiles of electron-cyclotron Gaussian beams in toroidal plasmas

Published online by Cambridge University Press:  13 March 2009

S. Cirant ,
S. Nowak  and
A. Orefice
S. Cirant
Affiliation:
Istituto di Fisica del Plasma, Associazione EURATOM-ENEA-CNR, Via Bassini 15, 20133 Milano, Italy
S. Nowak
Affiliation:
Istituto di Fisica del Plasma, Associazione EURATOM-ENEA-CNR, Via Bassini 15, 20133 Milano, Italy
A. Orefice
Affiliation:
Istituto di Fisica del Plasma, Associazione EURATOM-ENEA-CNR, Via Bassini 15, 20133 Milano, Italy
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Abstract

A peculiarity of the quasi-optical propagation of a Gaussian beam of electromagnetic waves is that it requires a treatment taking account, step by step, of all of its rays together. The dispersion relation from which such a ray- tracing may be deduced is in fact characterized not only by the medium where the beam is launched but also by the intrinsic beam structure. The behaviour of three-dimensional Gaussian beams in the electron-cyclotron frequency range is considered, with particular attention paid to their propagation in toroidal plasmas of fusion interest (with ITER-like parameters and various magnetic equilibrium configurations), to the generality of their launching conditions and to their power deposition profiles around resonant layers.

Type
Research Article
Information
Journal of Plasma Physics , Volume 53 , Issue 3 , June 1995 , pp. 345 - 364
Copyright
Copyright © Cambridge University Press 1995

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References

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