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Linear radial structure of reactive energetic geodesic acoustic modes

Qu, Z S; Hole, Matthew; Fitzgerald, M

Description

In this paper we have developed a fluid model to study the radial mode structure of the reactive energetic geodesic acoustic modes (reactive EGAMs), a branch of GAM that becomes unstable in the presence of a cold fast ion beam. We have solved the resulting dispersion relationship, a second order ODE, both analytically in restricted cases and numerically in general. It is found that the reactive EGAM global mode structure is formed with the inclusion of fast ion finite drift orbit effects....[Show more]

CollectionsANU Research Publications
Date published: 2017-04-04
Type: Journal article
URI: http://hdl.handle.net/1885/155583
Source: Plasma Physics and Controlled Fusion
DOI: 10.1088/1361-6587/aa6636
Access Rights: Open Access

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