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1982•The Physics of FluidsRequires access

Kinetic theory of collisionless ballooning modes

C. Z. Cheng

Open publisher page 118 citations

Abstract

A kinetic ballooning mode equation retaining full finite ion Larmor radius and ion magnetic drift resonance effects is derived by employing the high n ballooning mode formalism. It is found that the critical β is smaller than the ideal magnetohydro-dynamic critical β, except that when ηi = O(ηi≡d ln Ti/d ln N), that are identical. The finite Larmor radius effects reduce the growth rate but do not stabilize the mode. The ion magnetic drift resonance effects are destabilizing.

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What this paper is about

A kinetic ballooning mode equation retaining full finite ion Larmor radius and ion magnetic drift resonance effects is derived by employing the high n ballooning mode formalism. It is found that the critical β is smaller than the ideal magnetohydro-dynamic critical β, except that when ηi = O(ηi≡d ln Ti/d ln N), that are identical. The finite Larmor radius effects reduce the growth rate but do not stabilize the mode. The ion magnetic drift resonance effects are destabilizing.

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Available abstract

A kinetic ballooning mode equation retaining full finite ion Larmor radius and ion magnetic drift resonance effects is derived by employing the high n ballooning mode formalism. It is found that the critical β is smaller than the ideal magnetohydro-dynamic critical β, except that when ηi = O(ηi≡d ln Ti/d ln N), that are identical. The finite Larmor radius effects reduce the growth rate but do not stabilize the mode. The ion magnetic drift resonance effects are destabilizing.

Key concepts: Gyroradius, Ballooning, Physics, Ion, Kinetic energy, Formalism (music), Resonance (particle physics), RADIUS

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