IMPLICIT, PARTIALLY LINEARIZED, ELECTROMAGNETIC PARTICLE SIMULATION OF PLASMA DRIFT-WAVE TURBULENCE

Implicit, perturbative algorithms [B. I. Cohen, A. M. Dimits, J. J. St imson, and D. C. Barnes, Phys. Rev. E 53, 2708 (1996)] are extended to address electromagnetic particle simulation of drift-wave instabiliti es in electron and ion plasmas with a strong applied magnetic field. T he algorithms use gyrokinetic ions and drift-kinetic electrons with a realistic mass ratio. Implicit moment and direct implicit solutions of the coupled Maxwell and plasma dynamical equations are demonstrated. Aspects of the numerical dispersion properties are confirmed in test s imulations. Applications to ion-temperature-gradient and collisionless drift instabilities in a two-dimensional slab with magnetic shear are presented that illustrate the efficacy of the algorithms and the elec tromagnetic effects.