The effect of spin magnetization in the damping of electron plasma oscillations

TL;DR

This paper investigates how particle spin influences the damping of electrostatic plasma waves, revealing that spin can induce new damping or instabilities linked to the system's magnetization.

Contribution

It introduces a semi-classical kinetic model showing spin effects cause additional damping or instability in plasma wave propagation, a novel insight into plasma dynamics.

Findings

Spin induces new damping or instability in plasma waves.

The effect depends on the system's magnetization and wave electromagnetic coupling.

Spin effects modify traditional Landau damping mechanisms.

Abstract

The effect of spin of particles in the propagation of plasma waves is studied using a semi-classical kinetic theory for a magnetized plasma. We focus in the simple damping effects for the electrostatic wave modes besides Landau damping. Without taking into account more quantum effects than spin contribution to Vlasov's equation, we show that spin produces a new damping or instability which is proportional to the zeroth order magnetization of the system. This correction depends on the electromagnetic part of the wave which is coupled with the spin vector.