The effective Vlasov-Poisson system for strongly magnetized plasmas

TL;DR

This paper derives an effective Vlasov-Poisson model for strongly magnetized plasmas in the finite Larmor radius regime, highlighting its Hamiltonian structure and conserved quantities.

Contribution

It introduces a new limit model for the Vlasov-Poisson system under strong magnetic fields using gyro-average methods, with explicit expressions for the effective advection field.

Findings

Explicit form of the effective advection field derived.

The limit model preserves key physical invariants.

Hamiltonian structure of the model is established.

Abstract

We study the finite Larmor radius regime for the Vlasov-Poisson system. The magnetic field is assumed to be uniform. We investigate this non linear problem in the two dimensional setting. We derive the limit model by appealing to gyro-average methods cf. \cite{BosAsyAna}, \cite{BosTraEquSin}. We indicate the explicit expression of the effective advection field, entering the Vlasov equation, after substituting the self-consistent electric field, obtained by the resolution of the averaged (with respect to the cyclotronic time scale) Poisson equation. We emphasize the Hamiltonian structure of the limit model and present its properties~: conservationss of the mass, kinetic energy, electric energy, etc.