Sound vibrations in a plasma with 'magnetic filaments'

Details Sound vibrations in a plasma with 'magnetic filaments' Sound vibrations in a plasma with 'magnetic filaments'

Mar 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976zhetf..70..943r&link_type=abstract

Zhurnal Eksperimental'noi i Teoreticheskoi Fiziki, vol. 70, Mar. 1976, p. 943-954. In Russian.

Computer Science

Sound

4

Energy Dissipation, Magnetic Flux, Plasma Oscillations, Sound Waves, Wave Attenuation, Acoustic Attenuation, Astrophysics, Filaments, Long Wave Radiation, Magnetohydrodynamics, Monochromatic Radiation, Wave Excitation

Scientific paper

Under some laboratory and astrophysical conditions the magnetic flux in a plasma may be concentrated in narrow, mutually far-removed tubes ('magnetic filaments'). Long-wave sound vibrations of such systems are studied on the basis of the equations of magnetohydrodynamics. It is demonstrated that even in the absence of dissipative processes (viscosity, thermal conduction, ohmic losses) the sound vibrations are absorbed as a result of an effect which consists in resonance excitation of bending waves propagating along the magnetic filaments. Damping due to sound wave scattering on the filaments is examined. Damping of a low but finite amplitude monochromatic sound wave is considered.

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