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The conditions for the existence of negative-energy electrostatic waves are investigated for the case of an inhomogeneous force-free Vlasov-Maxwell equilibrium with sheared magnetic field. The investigation concentrates on evaluating the general expression for the second-order wave energy derived by Morrison and Pfirsch in the form given by Correa-Restrepo and Pfirsch. The paper reinforces their earlier theory in the context of drift-kinetic theory. It also demonstrates that in conditions of negative-energy modes large perpendicular wave numbers are not necessary within the system, a feature which enhances the relevance of these modes.

Additional information

Authors: CORREA-RESTREPO D, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);PFIRSCH D, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE)
Bibliographic Reference: Report: IPP 6/308 EN (1992) 46 pp.
Availability: Available from Max-Planck-Institut für Plasmaphysik, 8046 Garching bei München (DE)
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