Induced magnetic perturbations by plasma heating

Abstract

We discuss the possible induction of magnetic field fluctuations in laboratory plasma during plasma heating by electromagnetic waves. Basically, the electromagnetic wave excited lower hybrid waves may become pump waves to excite instabilities. We will describe a process that can simultaneously generate plasma density fluctuations and magnetic field fluctuations. Significant cross-field magnetic perturbations can be produced and, then, give rise to the plasma confinement problem during plasma heating.