Investigation of resonant layer response in electron viscosity regime

TL;DR

This paper investigates how electron viscosity influences the resonant layer response to magnetic perturbations, revealing significant effects in highly viscous, slowly rotating plasmas through refined modeling.

Contribution

It introduces a curl component of electron viscosity into the generalized Ohm's law, providing new insights into resonant layer behavior in the electron viscosity regime.

Findings

Electron viscosity significantly affects resonant layer response.

Refined model includes curl element of electron viscosity.

Resonant response observed in slowly rotating, viscous plasmas.

Abstract

We present a supplementary study of previous work in Waybright and Park [Phys. Plasmas 31, 022502 (2024)] which demonstrates a substantial effect of electron viscosity on the resonant layer response to non-axisymmetric magnetic perturbations. A main refinement is to include a curl element of electron viscosity in the generalized Ohm's law. The refinement reveals a resonant layer response in the Electron Viscosity (EV) regime corresponding to slowly rotating and highly viscous plasmas.