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Finite larmor radius effects on the stability properties of internal modes of a Z-pinch
1988 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. 37, no 1, p. 117-130Article in journal (Refereed) Published
Abstract [en]

From the Vlasov-fluid model a set of approximate stability equations describing the stability of a cylindrically symmetric z-pinch is derived. The equations are derived in the limit of small gyroradius and include first order kinetic effects such as finite ion Larmor radius effects and resonant ion effects. Neglecting the resonant ion terms, we explicitly solve this set of equations for a constant current density profile leading to a dispersion relation. FLR effects are shown for the case of m = 1 internal mode to be stabilizing and for large wavenumbers k, using a trial function approach, absolute stabilization is found.

Place, publisher, year, edition, pages
1988. Vol. 37, no 1, p. 117-130
National Category
Fluid Mechanics and Acoustics
Research subject
Fluid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-10791DOI: 10.1088/0031-8949/37/1/017Local ID: 9a7c1c70-8d62-11de-8da0-000ea68e967bOAI: oai:DiVA.org:ltu-10791DiVA, id: diva2:983738
Note
Upprättat; 1988; 20090820 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-28Bibliographically approved

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Åkerstedt, Hans O.

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