Strong scattering of high power millimeter waves in tokamak plasmas with tearing modes

E. Westerhof, S.K. Nielsen, JW Oosterbeek, M. Salewski, M.R. De Baar, W.A. Bongers, A. Bürger, B.A. Hennen, S.B. Korsholm, David Thoen, More Authors

Research output: Contribution to journalArticleScientificpeer-review

92 Citations (Scopus)

Abstract

In tokamak plasmas with a tearing mode, strong scattering of high power millimeter waves, as used for heating and noninductive current drive, is shown to occur. This new wave scattering phenomenon is shown to be related to the passage of the O point of a magnetic island through the high power heating beam. The density determines the detailed phasing of the scattered radiation relative to the O-point passage. The scattering power depends strongly nonlinearly on the heating beam power.
Original languageEnglish
Article number125001
Number of pages1
JournalPhysical Review Letters
Volume103
Issue number12
DOIs
Publication statusPublished - 2009
Externally publishedYes

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