Interaction of lower hybrid wave fields with drift-cyclotron loss-cone instability

Ker Chung Shaing

doi:10.1063/1.863519

Interaction of lower hybrid wave fields with drift-cyclotron loss-cone instability

Ker Chung Shaing

Institute of Space and Plasma Sciences

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

Abstract

The dispersion relation for the drift-cyclotron loss-cone mode in the presence of the lower hybrid wave is calculated using both electrostatic and finite β models. It is found that lower hybrid wave fields with frequency ω₀ can stabilize the mode if ω_lh < ω₀<ω₊, or ω₀<ω _-<ω_lh, where ω_lh = ω_pi/(1 + ω_pe²/ω _ce²)^1/2, ω_± = [±A + (A² + 4ω_lh²) ^1/2]/2, and ω_lh²E/ω_cik. If the plasma β is greater than a critical value β_c, there is another stabilization region, namely, ω₀>δω _lh, where δ is a numerical constant. Even though the stabilization effect is small in this region, the lower hybrid wave frequency for electron heating should be in this region in order to avoid enhancing the particle loss rate.

Original language	English
Pages (from-to)	1292-1298
Number of pages	7
Journal	Physics of Fluids
Volume	24
Issue number	7
DOIs	https://doi.org/10.1063/1.863519
Publication status	Published - 1981

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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10.1063/1.863519

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title = "Interaction of lower hybrid wave fields with drift-cyclotron loss-cone instability",

abstract = "The dispersion relation for the drift-cyclotron loss-cone mode in the presence of the lower hybrid wave is calculated using both electrostatic and finite β models. It is found that lower hybrid wave fields with frequency ω0 can stabilize the mode if ωlh < ω0<ω+, or ω0<ω -<ωlh, where ωlh = ωpi/(1 + ωpe2/ω ce2)1/2, ω± = [±A + (A2 + 4ωlh2) 1/2]/2, and ωlh2E/ωcik. If the plasma β is greater than a critical value βc, there is another stabilization region, namely, ω0>δω lh, where δ is a numerical constant. Even though the stabilization effect is small in this region, the lower hybrid wave frequency for electron heating should be in this region in order to avoid enhancing the particle loss rate.",

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N2 - The dispersion relation for the drift-cyclotron loss-cone mode in the presence of the lower hybrid wave is calculated using both electrostatic and finite β models. It is found that lower hybrid wave fields with frequency ω0 can stabilize the mode if ωlh < ω0<ω+, or ω0<ω -<ωlh, where ωlh = ωpi/(1 + ωpe2/ω ce2)1/2, ω± = [±A + (A2 + 4ωlh2) 1/2]/2, and ωlh2E/ωcik. If the plasma β is greater than a critical value βc, there is another stabilization region, namely, ω0>δω lh, where δ is a numerical constant. Even though the stabilization effect is small in this region, the lower hybrid wave frequency for electron heating should be in this region in order to avoid enhancing the particle loss rate.

AB - The dispersion relation for the drift-cyclotron loss-cone mode in the presence of the lower hybrid wave is calculated using both electrostatic and finite β models. It is found that lower hybrid wave fields with frequency ω0 can stabilize the mode if ωlh < ω0<ω+, or ω0<ω -<ωlh, where ωlh = ωpi/(1 + ωpe2/ω ce2)1/2, ω± = [±A + (A2 + 4ωlh2) 1/2]/2, and ωlh2E/ωcik. If the plasma β is greater than a critical value βc, there is another stabilization region, namely, ω0>δω lh, where δ is a numerical constant. Even though the stabilization effect is small in this region, the lower hybrid wave frequency for electron heating should be in this region in order to avoid enhancing the particle loss rate.

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Interaction of lower hybrid wave fields with drift-cyclotron loss-cone instability

Abstract

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