Dust grain acceleration by the ponderomotive force of Alfvén waves in cosmic plasmas

Details Dust grain acceleration by the ponderomotive force of Alfvén waves in cosmic plasmas Dust grain acceleration by the ponderomotive force of Alfvén waves in cosmic plasmas

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003phpl...10.1523s&link_type=abstract

Physics of Plasmas, Volume 10, Issue 5, pp. 1523-1525 (2003).

Physics

3

Magnetohydrodynamics And Plasmas, Dusty Or Complex Plasmas, Plasma Crystals, Transport Properties, Magnetohydrodynamic Waves, Magnetohydrodynamics

Scientific paper

It is shown that the ponderomotive force of shear Alfvén waves in astrophysical plasmas can create intense space charge electric fields which can accelerate charged dust grains. A specific example for the magnetic field aligned dust grain acceleration has been worked out. It is found that the dust acceleration is proportional to the product of ωpi2/ωci2 and the gradient of the shear Alfvén wave intensity, where ωpi(ωci) is the ion plasma (ion gyro) frequency. The result may help in understanding the origin of high energy dust in cosmic environments.

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