[Table of Contents]

Plasma and Fusion Research

Volume 10, 1403058 (2015)

Regular Articles

Development of Linearized Collision Operator for Multiple Ion Species in Gyrokinetic Flux-Tube Simulations
Masanori NUNAMI, Motoki NAKATA1), Tomo-Hiko WATANABE2) and Hideo SUGAMA
National Institute for Fusion Science, Toki 509-5292, Japan
1)
Japan Atomic Energy Agency, Rokkasho, Aomori 039-3212, Japan
2)
Department of Physics, Nagoya University, Nagoya 464-8602, Japan
(Received 13 February 2015 / Accepted 24 March 2015 / Published 26 May 2015)

Abstract

Linearized model collision operators for multiple ion species are implemented in a local flux-tube gyrokinetic code. The newly implemented collision operator satisfies the conservation properties of particles, momentum, and energy, as well as the adjointness relations for collisions between different particle species, which are numerically confirmed by the test simulations. The linear zonal flow response with finite collisionality, is also compared between the new collision operator and the simplified model collision operator.

Keywords

collision operator, gyrokinetic simulation, zonal flow

DOI: 10.1585/pfr.10.1403058

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This paper may be cited as follows:

Masanori NUNAMI, Motoki NAKATA, Tomo-Hiko WATANABE and Hideo SUGAMA, Plasma Fusion Res. 10, 1403058 (2015).