Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989plap.work..313a&link_type=abstract
In ESA, Proceedings of an International School and Workshop on Plasma Astrophysics, Volume 1 p 313-319 (SEE N89-24910 18-75)
Astronomy and Astrophysics
Astrophysics
Plasma Diffusion, Plasma Drift, Plasma Turbulence, Vortices, Ground State, Plasma Waves, Plasma-Particle Interactions, Solitary Waves, Trapped Particles
Scientific paper
Nonlinear properties of short wavelength drift waves in a magnetoactive plasma were analyzed. It is shown that nonlinear short wavelength drift structures can excite drift turbulence in a plasma. The turbulence is assumed to be a gas of the ensemble of weakly interacting similar vortices composing the ground state. These structures contain the trapped particles and while mixing in plasma, cause fluctuation of the density and activate the processes of the transfer. The width of the density fluctuation spectrum is much greater than the value predicted by the theory of the weak turbulence, that is in a satisfactory agreement with experimental observations. In the range of moderate pulsation amplitudes, vortex turbulence leads to the anomalous diffusion of plasma particles. It is suggested that the vortex turbulence can be responsible for the anomalous transfer of the particles and the heat, observed in plasma experiments.
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