[Table of Contents]

Plasma and Fusion Research

Volume 10, 1201004 (2015)

Rapid Communications

Phase Space Volumes of Non-Neutral Electron Plasmas during Vortex Merging Processes
Chikato KAGA, Yukihiro SOGA1), Kiyokazu ITO, Hiroyuki HIGAKI and Hiromi OKAMOTO
Graduate School of Advanced Sciences of Matter, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8530, Japan
1)
Faculty of Mathematics and Physics, Institute of Science and Engineering, Kanazawa University, Kanazawa 920-1192, Japan
(Received 20 October 2014 / Accepted 17 December 2014 / Published 30 January 2015)

Abstract

Non-neutral electron plasmas in a uniform magnetic field are investigated experimentally as a two dimensional fluid. It is confirmed that the phase space volume increases during a vortex merging process, which is consistent with the presence of viscosity. It is also suggested that the following vortex holes movement is associated with a dissipative process.

Keywords

non-neutral plasma, 2D fluid, vortex merging, vortex holes, phase space

DOI: 10.1585/pfr.10.1201004

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This paper may be cited as follows:

Chikato KAGA, Yukihiro SOGA, Kiyokazu ITO, Hiroyuki HIGAKI and Hiromi OKAMOTO, Plasma Fusion Res. 10, 1201004 (2015).