Effects of the fast wave on the drift-cyclotron loss-cone mode

Ker Chung Shaing

doi:10.1063/1.863520

Effects of the fast wave on the drift-cyclotron loss-cone mode

Ker Chung Shaing

Institute of Space and Plasma Sciences

Research output: Contribution to journal › Article › peer-review

Abstract

Particle orbits in the presence of the fast wave fields are calculated. It is found that the resonant interaction of ions with the wave can be neglected at ω₀ = 2ω_ci, provided that the wave electric field strength is less than a critical value E_c( = 4k _∥Tle). The dominant effect on the dispersion relation of the drift-cyclotron loss-cone mode is thus found to be due to the nonresonant effects of the wave on electrons and ions. It is found that a fast wave with ω₀ = 2ω_ci destabilizes the mode. For ω₀<2ω_ci, fast waves can stabilize the mode for certain values of the plasma β which is calculated numerically.

Original language	English
Pages (from-to)	1299-1302
Number of pages	4
Journal	Physics of Fluids
Volume	24
Issue number	7
DOIs	https://doi.org/10.1063/1.863520
Publication status	Published - 1981 Jan 1

All Science Journal Classification (ASJC) codes

Computational Mechanics
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Fluid Flow and Transfer Processes

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10.1063/1.863520

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abstract = "Particle orbits in the presence of the fast wave fields are calculated. It is found that the resonant interaction of ions with the wave can be neglected at ω0 = 2ωci, provided that the wave electric field strength is less than a critical value Ec( = 4k ∥Tle). The dominant effect on the dispersion relation of the drift-cyclotron loss-cone mode is thus found to be due to the nonresonant effects of the wave on electrons and ions. It is found that a fast wave with ω0 = 2ωci destabilizes the mode. For ω0<2ωci, fast waves can stabilize the mode for certain values of the plasma β which is calculated numerically.",

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N2 - Particle orbits in the presence of the fast wave fields are calculated. It is found that the resonant interaction of ions with the wave can be neglected at ω0 = 2ωci, provided that the wave electric field strength is less than a critical value Ec( = 4k ∥Tle). The dominant effect on the dispersion relation of the drift-cyclotron loss-cone mode is thus found to be due to the nonresonant effects of the wave on electrons and ions. It is found that a fast wave with ω0 = 2ωci destabilizes the mode. For ω0<2ωci, fast waves can stabilize the mode for certain values of the plasma β which is calculated numerically.

AB - Particle orbits in the presence of the fast wave fields are calculated. It is found that the resonant interaction of ions with the wave can be neglected at ω0 = 2ωci, provided that the wave electric field strength is less than a critical value Ec( = 4k ∥Tle). The dominant effect on the dispersion relation of the drift-cyclotron loss-cone mode is thus found to be due to the nonresonant effects of the wave on electrons and ions. It is found that a fast wave with ω0 = 2ωci destabilizes the mode. For ω0<2ωci, fast waves can stabilize the mode for certain values of the plasma β which is calculated numerically.

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Effects of the fast wave on the drift-cyclotron loss-cone mode

Abstract

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