Interaction of plasma rotation and resonant magnetic perturbation fields in tokamaks


Nicolai A., Daybelge U., Lehnen M., Tokar M. Z. , Unterberg B., Yarim C.

NUCLEAR FUSION, cilt.48, 2008 (SCI İndekslerine Giren Dergi) identifier identifier

Özet

The interaction between plasma rotation and perturbation fields is described by the ambipolarity constraint and the parallel momentum balance, both emanating from the revisited neoclassical theory, and the electrodynamical screening of the resonant perturbation field at the singular surfaces. This screening depends mainly on the slip between the rotating plasma and the resonant field. The neoclassical theory, valid in the collision dominated regime and accounting for gyro-viscosity, includes arbitrary plasma cross-sections, anomalous viscosity, ponderomotive forces, neutral beam injection (NBI), pressure anisotropization and a momentum source due to ergodicity which has a considerable impact on the plasma rotation as demonstrated in TEXTOR.