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Fluid moment models for Landau damping with application to the ion-temperature-gradient instability
Abstract
A closed set of fluid moment equations is developed which represents kinetic Landau damping physics and which takes a simple form in wave-number space. The linear-response function corresponds to a three-pole (or four-pole) approximation to the plasma dispersion function Z. Alternatively, the response is exact for a distribution function which is close to Maxwellian, but which decreases asymptotically as 1/${\mathit{v}}^{4}$ (or 1/${\mathit{v}}^{6}$). Among other applications, these equations should be useful for nonlinear studies of turbulence driven by the ion-temperature-gradient or other drift-wave microinstabilities.
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Research works printed but not linked: 12
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Physics of E × B discharges relevant to plasma propulsion and similar technologies
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Metadata
- Authors
- Hammett, G. W., & Perkins, F. W.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 1990-06-18
- Volume
- 64
- Issue
- 25
- Pages
- 3019-3022
- ISSN
- 0031-9007 (ISSN-L)
- OpenAlex
- W2042890886
- Cited by
- 618
- References
- 0
- FWCI
- 9.51
- Type
- journal article
- Language
- en
- Open access
- closed
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