[Table of Contents]

Plasma and Fusion Research

Volume 8, 2403106 (2013)

Regular Articles


Development of a Nonlinear Collision Operator for GNET Code
Yoshitada MASAOKA and Sadayoshi MURAKAMI
Department of Nuclear Engineering, Kyoto University, Nishikyo, Kyoto 615-8530, Japan
(Received 29 November 2012 / Accepted 22 April 2013 / Published 15 August 2013)

Abstract

A nonlinear collision operator is formulated in the polar coordinate (v, cos θ) in order to study the effect of collisions among high-energy particles on their confinements in toroidal plasmas. The Monte Carlo collision operator is derived to be easily implemented to the orbit following code. The nonlinear collision model is benchmarked with the Boozer collision model for the Maxwellian plasma. This collision model enables the effect of self collisions of α-particles and energetic particles to be investigated on plasma heating, e.g. NBI and ICRF heating.


Keywords

nuclear fusion, α-particle confinement, plasma heating, nonlinear collision operator, Monte Carlo method

DOI: 10.1585/pfr.8.2403106


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This paper may be cited as follows:

Yoshitada MASAOKA and Sadayoshi MURAKAMI, Plasma Fusion Res. 8, 2403106 (2013).