Geodesic acoustic mode in anisotropic plasma with heat flux
Geodesic acoustic mode in anisotropic plasma with heat flux
复制标题
具有热通量的各向异性等离子体中的测地声学模式
DOI:
10.1063/1.4932998
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发表时间:
2015-10
影响因子:
2.2
通讯作者:
Ren, Haijun
中科院分区:
文献类型:
--
作者:
Ren, Haijun
Geodesic acoustic mode (GAM) in an anisotropic tokamak plasma is investigated in fluid approximation. The collisionless anisotropic plasma is described within the 16-momentum magnetohydrodynamic (MHD) fluid closure model, which takes into account not only the pressure anisotropy but also the anisotropic heat flux. It is shown that the GAM frequency agrees better with the kinetic result than the standard Chew-Goldberger-Low (CGL) MHD model. When zeroing the anisotropy, the 16-momentum result is identical with the kinetic one to the order of 1/q2, while the CGL result agrees with the kinetic result only on the leading order. The discrepancies between the results of the CGL fluid model and the kinetic theory are well removed by considering the heat flux effect in the fluid approximation.
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通讯作者:
N. S. Dzhalilov;V. D. Kuznetsov;J. S. A. I. Potsdam;Germany;Pushkov Institute of Terrestrial Magnetism;Ionosphere;R. Propagation;TroitskMoscow;Russia;Shamakhy Astrophysical Observatory;Baku;Azerbaidjan