[Table of Contents]

Plasma and Fusion Research

Volume 2, 045 (2007)

Rapid Communications

Long-Lived Pure Electron Plasma in Ring Trap-1
Haruhiko SAITOH, Zensho YOSHIDA, Junji MORIKAWA1), Sho WATANABE, Yoshihisa YANO and Junko SUZUKI
Department of Advanced Energy, University of Tokyo
1)
High Temperature Plasma Center, University of Tokyo
(Received 22 August 2007 / Accepted 7 September 2007 / Published 12 October 2007)

Abstract

The Ring Trap-1 (RT-1) experiment succeeded in producing a long-lived (of the order 102 s), stable, non-neutral (pure electron) plasma. Electrons are confined by a magnetospheric dipole field. To eliminate a loss channel of the plasmas caused by support structures, a superconducting coil was magnetically levitated. This coil levitation drastically improved the confinement properties of the electron plasma compared to previous Prototype-Ring Trap (Proto-RT) experiments.

Keywords

non-neutral plasma, pure electron plasma, superconducting magnetospheric device, dipole field

DOI: 10.1585/pfr.2.045

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This paper may be cited as follows:

Haruhiko SAITOH, Zensho YOSHIDA, Junji MORIKAWA, Sho WATANABE, Yoshihisa YANO and Junko SUZUKI, Plasma Fusion Res. 2, 045 (2007).