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A Parameter that Denotes Non-Equilibrium Property for Turbulent Plasmas

Kimitaka ITOH^1,2) and Sanae-I. ITOH^2,3)

1)

National Institute for Fusion Science, Toki 509-5292, Japan

2)

Research Center for Plasma Turbulence, Kyushu University, Kasuga 816-8580, Japan

3)

Research Institute for Applied Mechanics, Kyushu University, Kasuga 816-8580, Japan

(Received 25 November 2014 / Accepted 23 February 2015 / Published 26 May 2015)

Abstract

One of the nonequilibrium features of turbulent plasmas is the mixing of the timescales of macroscopic and microscopic dynamics. We here study the direct influence of heating on the turbulence and turbulent transport, by paying attention to the coupling between source and fluctuations in the phase space dynamics. This coupling causes the immediate influence of external source (like heating) on the turbulence and turbulent transport, and thus introduces the mixing of time scales. A control parameter is introduced to denote the distance from thermodynamical equilibrium.

Copyright (c) 2015 The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

nonequilibrium plasma, turbulence, turbulent transport, phase space

DOI: 10.1585/pfr.10.3401027

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References

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This paper may be cited as follows:

Kimitaka ITOH and Sanae-I. ITOH, Plasma Fusion Res. 10, 3401027 (2015).