Collisionless damping of geodesic acoustic modes

被引：132

作者：

Sugama, H. ^{[1
]}

Watanabe, T. -H. ^{[1
]}

机构：

[1] Grad Univ Adv Studies, Natl Inst Fus Sci, Toki 5095292, Japan

来源：

JOURNAL OF PLASMA PHYSICS | 2006年 / 72卷

关键词：

D O I：

10.1017/S0022377806004958

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：

Collisionless time evolutions of geodesic acoustic modes (GAMs) in tokamaks are investigated by the gyrokinetic theory and simulation. It is shown that the collisionless damping of the GAM oscillations is enhanced when the ratio of the typical drift orbit width of passing ions to the radial wavelength of the zonal flow increases.

引用

页码：825 / 828

页数：4

共 6 条

[1] Plateau regime dynamics of the relaxation of poloidal rotation in tokamak plasmas [J].

Lebedev, VB ;

Yushmanov, PN ;

Diamond, PH ;

Novakovskii, SV ;

Smolyakov, AI .

PHYSICS OF PLASMAS, 1996, 3 (08) :3023-3031

[2] The radial electric field dynamics in the neoclassical plasmas [J].

Novakovskii, SV ;

Liu, CS ;

Sagdeev, RZ ;

Rosenbluth, MN .

PHYSICS OF PLASMAS, 1997, 4 (12) :4272-4282

[3] Poloidal flow driven by ion-temperature-gradient turbulence in tokamaks [J].

Rosenbluth, MN ;

Hinton, FL .

PHYSICAL REVIEW LETTERS, 1998, 80 (04) :724-727

[4] Dynamics of zonal flows in helical systems [J].

Sugama, H ;

Watanabe, TH .

PHYSICAL REVIEW LETTERS, 2005, 94 (11)

[5]

WATANABE TH, 2004, P VILAMOURA

[6]

WINSOR N, 1968, PHYS FLUIDS, V11, P248

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