The nonlinear aspects of the interaction between externally applied electrostatic oscillations and a one-dimensional electron-ion plasma is investigated by numerically integrating the Vlasov-Poisson system of equations. The forcing held is in the form of a broad symmetric k spectrum which simulates that used in low-frequency wave-heating experiments in tokamak plasmas. It is shown that, for realistic values of the plasma and field parameters, numerous nonlinear effects accompany the wave-plasma interaction, as, for example, the formation of density cavities by the action of ponderomotive forces, the acceleration of charged particles, and the nonlinear plasma heating.
Vlasov-Poisson simulations of strong wave-plasma interaction in conditions of relevance for radio frequency plasma heating
CALIFANO, FRANCESCO;
1999-01-01
Abstract
The nonlinear aspects of the interaction between externally applied electrostatic oscillations and a one-dimensional electron-ion plasma is investigated by numerically integrating the Vlasov-Poisson system of equations. The forcing held is in the form of a broad symmetric k spectrum which simulates that used in low-frequency wave-heating experiments in tokamak plasmas. It is shown that, for realistic values of the plasma and field parameters, numerous nonlinear effects accompany the wave-plasma interaction, as, for example, the formation of density cavities by the action of ponderomotive forces, the acceleration of charged particles, and the nonlinear plasma heating.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.