UW-CPTC 15-6 Two-Fluid and Finite Larmor Radius Effects on Helicity Evolution in a Plasma Pinch

First-order finite-Larmor-radius fluid modeling of tearing and relaxation in a plasma pinch

Plasma Physics and Controlled Nuclear Fusion Research

o;oNLINEAR TOROIDAL PLASMA DYNAMICS BY REDUCED FLUID MODELS. . Fluid models are presented which generalize reduced MHD by allowing for compressibility, Finite Larmor Radius, and long mean free path in toroidal geometry. The Hamiltonian structure of the models leads to a generalized energy principle for determining linear and nonlinear MHD stability of uilibria with flows and Finite Larmor Radiu...

Finite Larmor Radius Effects in Two-Dimensional Electrostatic Plasma Turbulence

Low frequency electrostatic turbulence in strongly magnetized, low @-plasmas, is studied in two spatial dimensions. In this limit the guiding center velocity in the direction perpendicular to a homogeneous magnetic field is approximated by the E x Bo/B,2-velocity. The electron Larmor radius can safely be set to zero for most relevant conditions, but the ion-dynamics are noticeably influenced by...

Finite Larmor Radius Effects on the Magnetorotational Instability

The linear dispersion relation for the magnetorotational instability (MRI) is derived including finite Larmor radius (FLR) effects. In particular, the Braginskii form of the ion gyroviscosity, which represents the first-order FLR corrections to the two-fluid equations, is retained. It is shown that FLR effects are the most important effects in the limit of weak magnetic fields, and are much mor...

First-order finite-Larmor-radius effects on magnetic tearing in pinch configurations