Instabilities of Extraordinary Wave in a Collision-Dominated Plasma

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概要

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• The instabilities of the extraordinary wave are studied by taking the effect of finite wave number into account. It is assumed that the unperturbed velocity distribution of electrons is a spherical shell in velocity space and the electron's collision frequency ν with neutral particles depends on the magnitude of their velocities υ_0, namely, ν∝υ_0^h. The dispersion relation is obtained for the case in which the refractive index is much larger than unity. The dispersion curves of the wave for h〓0 show that the occurrence of instabilities may be expected at both sides near the cyclotron frequency and the higher harmonics. The conditions for onset of the collision-induced instability at the cyclotron frequency and the second harmonic are given by h>3 and h>5 respectively in the long wavelength limit. When the wave number and the electron density are chosen suitably, the conditions are modified as h> 2.6 and h>3.7.

• 社団法人日本物理学会の論文
• 1972-05-05

著者

• Shimomura Noboru

  The Tennoji Branch Osaka Kyoiku University

関連論文

• Instabilities of Extraordinary Wave in a Collision-Dominated Plasma

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