Weakly magnetized, Hall dominated plasma Couette flow

Abstract

A novel plasma equilibrium in the high-$\beta$, Hall regime that produces centrally-peaked, high Mach number Couette flow is described. Flow is driven using a weak, uniform magnetic field and large, cross field currents. Large magnetic field amplification (factor 20) due to the Hall effect is observed when electrons are flowing radially inward, and near perfect field expulsion is observed when the flow is reversed. A dynamic equilibrium is reached between the amplified (removed) field and extended density gradients.

6 pages, 5 figures. Submitted to Physical Review Letters on 6/16/2020. Re-submitted with edits based on reviewer comments on 8/6/2020

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• Laminar and Turbulent Plasmoid Ejection in a Laboratory Parker Spiral Current Sheet
• Plasma potential shaping using end-electrodes in the Large Plasma Device
• DC electric field generation and distribution in magnetized plasmas
• Mode Conversion and Period Doubling at Plasma-$\beta$ Unity in an Alfvén-Wave Experiment with Liquid Rubidium
• Ion heating and flow driven by an Instability found in Plasma Couette Flow
• Laboratory modeling of MHD accretion disks
• Structure and Dynamics of Magneto-Inertial, Differentially Rotating Laboratory Plasmas