Threshold of parametric decay instability accompanying electron Bernstein wave heating in spherical tokamaks

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

The parametric instability of upper hybrid wave decay into back scattered upper hybrid wave and lower hybrid wave is considered for conditions of inhomogeneous plasma of spherical tokamaks. The possibility of absolute instability is demonstrated and the corresponding threshold is determined. It is shown that the threshold power increases with pump frequency and electron temperature. Threshold power is estimated for typical parameters of experiment in MAST tokamak. It is shown that in this case parametrical reflection arises, if probing power exceeds 90W/cm^2, which gives 30 kW for a beam of 10 cm radius.
12th International Congress on Plasma Physics, 25-29 October 2004, Nice (France)

Keywords

Plasma Physics

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/86532

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/physics/0410190
 http://arxiv.org/abs/physics/0410190

Collections

arXiv