Electron Diamagnetism and Toroidal Coupling of Tearing Modes

Download or read book Electron Diamagnetism and Toroidal Coupling of Tearing Modes written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Using a simple model for the layer of the tearing mode, we demonstrate that toroidally coupled tearing modes with two rational surfaces are most unstable when the .omega.*'s of the electrons at the rational surfaces are equal. The onset of instability may then occur because of the tuning of .omega.* rather than the passage of .delta.'-like quantities through zero. This mechanism for the onset of instability is sharp since the resonance is narrow. The effect of toroidal rotation is also discussed. 7 refs., 2 figs.