title: Confinement of nonneutral plasmas on magnetic surfaces.
abstract: The confinement of a nonneutral plasma in a magnetic-surface, or stellarator, configuration is explored. The fluid equilibrium equations are derived and are found to be fundamentally different from previous results. Diocotron modes are predicted to be stable. The collisional confinement time can be very long. Possible applications include positron trapping and confinement of positron-electron plasmas. The basic physics can be addressed experimentally in the simple tabletop stellarator planned for construction at Columbia University.
authors: Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA. tsp22@columbia.edu
authors: Thomas Sunn
authors: TS
authors: Pedersen
authors: Allen H
authors: AH
authors: Boozer