Ion Temperature Gradient Modes in Toroidal Helical Systems

Details Ion Temperature Gradient Modes in Toroidal Helical Systems Ion Temperature Gradient Modes in Toroidal Helical Systems

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007iaus..239.....k&link_type=abstract

Journal of the Physical Society of Japan, Volume 69, Issue 8, pp. 2485 (2000).

Physics

3

Scientific paper

Linear properties of ion temperature gradient (ITG) modes in toroidal helical systems are studied. The real frequencies, growth rates, and eigenfunctions are obtained for both stable and unstable casesby solving a kinetic integral equation with proper analytic continuation performed in thecomplex frequency plane. Based on a model magnetic configuration for toroidal helical systems like the Large Helical Device (LHD), dependences of the ITG mode properties on various plasma equilibrium parameters are investigated. Particularly, relative effects of ∇B-curvature drifts driven by the toroidicity and by the helical ripples are examined in order to compare a ITG modes in helical systems with those in tokamaks.

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