The ponderomotive force due to the intrinsic spin in extended fluid and kinetic models

TL;DR

This paper calculates the electron spin's contribution to the ponderomotive force in plasma using advanced fluid and kinetic models, revealing new terms and confirming previous results with enhanced accuracy.

Contribution

It introduces a spin-fluid model with spin-velocity correlations and confirms findings through spin-kinetic theory, advancing understanding of spin effects in plasma dynamics.

Findings

Previous spin-ponderomotive terms are recovered.

Additional new terms due to spin-velocity correlations are identified.

Results are confirmed with spin-kinetic theory.

Abstract

In this paper we calculate the contribution to the ponderomotive force in a plasma from the electron spin using a recently developed model. The spin-fluid model used in the present paper contains spin-velocity correlations, in contrast to previous models used for the same purpose. Is its then found that previous terms for the spin-ponderomotive force are recovered, but also that additional terms appear. Furthermore, the results due to the spin-velocity correlations are confirmed using the spin-kinetic theory. The significance of our results is discussed.