Dynamics of fast magnetosonic perturbations close to an X-X separatrix

D. Farina, I. Kotelnikov, R. Pozzoli

Research output: Contribution to journalArticle


The structure of magnetosonic perturbations around a pair of X lines of a toroidal magnetic configuration is analysed in the framework of ideal MHD, by means of a WKB technique. The conditions for wave trapping are investigated. It is shown that the wave equation for the displacement is separable in the vicinity of the X lines. The relevant eigenvalues and the different types of ray trajectories are discussed.
Original languageEnglish
Pages (from-to)761 - 770
Number of pages10
JournalJournal of Plasma Physics
Issue number5
Publication statusPublished - 1999
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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