Phys. Rev. E 65, 036407 (2002) [11 pages]Unified formulation for inhomogeneity-driven instabilities in the lower-hybrid rangeReceived 6 September 2001; published 19 February 2002 A local dispersion relation that describes inhomogeneity-driven instabilities in the lower-hybrid range is derived following a procedure that correctly describes energy exchange between waves and particles in inhomogeneous media, correcting some inherent ambiguities associated with the standard formalism found in the literature. Numerical solutions of this improved dispersion relation show that it constitutes a unified formulation for the instabilities in the lower-hybrid range, describing the so-called modified two-stream instability, excited by the ion cross-field drift, including the ion Weibel instability, and also describing the lower-hybrid drift instability, which is due to inhomogeneity effects on the electron population. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.65.036407
DOI:
10.1103/PhysRevE.65.036407
PACS:
52.25.Mq, 52.35.-g, 94.30.Tz
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