Multiple eigenmodes of geodesic acoustic mode in collisionless plasmas
Physics of Plasmas2006Vol. 13(10)
Citations Over TimeTop 10% of 2006 papers
Abstract
We report a series of eigenmodes of the geodesic acoustic mode (GAM), which includes the standard GAM, a branch of low-frequency mode, and a series of ion sound wave-like modes. The case of Ti≫Te is investigated, and eigenfrequencies of these modes are obtained analytically from a linear gyrokinetic model in collisionless plasmas with a rigid constant electrostatic potential around a magnetic surface.
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