Transport and Damping from Rotational Pumping in Magnetized Electron Plasmas

Abstract

Radial particle transport and the damping of the $m=1\mathrm{}$ diocotron mode from “rotational pumping” have been measured on a magnetized electron column. Rotational pumping is collisional dissipation of the axial compressions caused by $\mathbf{E}\times \mathbf{B}$ rotation of the column through asymmetric confining potentials. The observed transport rates are in close agreement with theory.