Development of Linearized Collision Operator for Multiple Ion Species in Gyrokinetic Flux-Tube Simulations

Gyrokinetic linearized Landau collision operator.

The full gyrokinetic electrostatic linearized Landau collision operator is calculated including the equilibrium operator, which represents the effect of collisions between gyrokinetic Maxwellian particles. First, the equilibrium operator describes energy exchange between different plasma species, which is important in multiple ion-species plasmas. Second, the equilibrium operator describes drag...

Gyrokinetic Fokker-Planck Collision Operator

Gyrokinetic Fokker-Planck Collision Operator

Gyrokinetic Fokker-Planck collision operator.

The gyrokinetic linearized exact Fokker-Planck collision operator is obtained in a form suitable for plasma gyrokinetic equations, for arbitrary mass ratio. The linearized Fokker-Planck operator includes both the test-particle and field-particle contributions, and automatically conserves particles, momentum, and energy, while ensuring non-negative entropy production. Finite gyroradius effects i...

Linearized model Fokker–Planck collision operators for gyrokinetic simulations. I. Theory

for gyrokinetic simulations. I. Theory I. G. Abel, M. Barnes, S. C. Cowley, W. Dorland, and A. A. Schekochihin Plasma Physics Group, Blackett Laboratory, Imperial College, London SW7 2AZ, United Kingdom Euratom/UKAEA Fusion Association, Culham Science Centre, Abingdon OX14 3DB, United Kingdom Department of Physics, Institute for Research in Electronics and Applied Physics, and Center for Scient...