Discrete Alfven waves in planar flux tubes

Details Discrete Alfven waves in planar flux tubes Discrete Alfven waves in planar flux tubes

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ap%26ss.127..265d&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 127, no. 2, Nov. 1986, p. 265-284.

Astronomy and Astrophysics

Astrophysics

1

Cold Plasmas, Collisionless Plasmas, Cyclotron Radiation, Magnetohydrodynamic Waves, Space Plasmas, Current Density, Mass Distribution, Plasma Currents, Schroedinger Equation, Spectrum Analysis, Wave Dispersion

Scientific paper

Properties of discrete Alfven wave modes are derived, at frequencies up to the ion-cyclotron frequency, for current-carrying plasma slabs with non-uniform densities. It is shown that the essential features of the dispersion relations can be derived by examining the dominant terms in the 'potential' function, when the wave equation is cast in the Schroedinger equation form. Analytical predictions for a class of mass and current density profiles are compared with numerically calculated dispersion relations and wavefields for particular profiles.

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