[Table of Contents]

Plasma and Fusion Research

Volume 5, 029 (2010)

Rapid Communications

Electrostatic Oscillations Observed in Non-Neutral Electron Plasmas Confined in a Magnetic Field Gradient
Hiroyuki HIGAKI, Kiyokazu ITO and Hiromi OKAMOTO
Graduate School of Advanced Sciences of Matter, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8530, Japan
(Received 21 June 2010 / Accepted 12 July 2010 / Published 20 August 2010)

Abstract

Non-neutral electron plasmas were confined in an axisymmetric magnetic mirror field of the mirror ratio R ∼ 3. Axial plasma oscillations (Trivelpiece-Gould modes), diocotron oscillations with the azimuthal mode number m = 2, and solitary waves were investigated experimentally. It was observed that the velocities of an electron soliton and an electron hole decreased at high field side in a magnetic mirror confinement.

Keywords

non-neutral plasma, magnetic mirror confinement, electrostatic oscillation, electron solitary wave

DOI: 10.1585/pfr.5.029

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This paper may be cited as follows:

Hiroyuki HIGAKI, Kiyokazu ITO and Hiromi OKAMOTO, Plasma Fusion Res. 5, 029 (2010).