A multi-species collisional operator for full-F gyrokinetics

被引：23

作者：

Esteve, D. ^{[1
]}

Garbet, X. ^{[1
]}

Sarazin, Y. ^{[1
]}

Grandgirard, V. ^{[1
]}

Cartier-Michaud, T. ^{[1
]}

Dif-Pradalier, G. ^{[1
]}

Ghendrih, P. ^{[1
]}

Latu, G. ^{[1
]}

Norscini, C. ^{[1
]}

机构：

[1] CEA, IRFM, F-13108 St Paul Les Durance, France

来源：

PHYSICS OF PLASMAS | 2015年 / 22卷 / 12期

关键词：

NEOCLASSICAL TRANSPORT-THEORY; IMPURITY TRANSPORT; PLASMA TRANSPORT;

D O I：

10.1063/1.4937373

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

A linearized multi-species collision operator has been developed for an efficient implementation in gyrokinetic codes. This operator satisfies the main expected properties: particle, momentum, and energy conservation, and existence of an H-theorem. A gyrokinetic version is then calculated, which involves derivatives with respect to the gyrocenter position, parallel velocity, and magnetic momentum. An isotropic version in the velocity space can be constructed for the specific problem of trace impurities colliding with a main species. A simpler version that involves derivatives with parallel velocity only has been developed. This reduced version has been implemented in the GYSELA gyrokinetic code, and is shown to comply with particle, momentum, and energy conservation laws. Moreover, the interspecies relaxation rates for momentum and energy agree very well with the theoretical values. (C) 2015 AIP Publishing LLC.

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页数：16

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