Excitation of ion waves by charged dust beams in ionospheric aerosol release experiments

Details Excitation of ion waves by charged dust beams in ionospheric aerosol release experiments Excitation of ion waves by charged dust beams in ionospheric aerosol release experiments

Mar 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011p%26ss...59..312r&link_type=abstract

Planetary and Space Science, Volume 59, Issue 4, p. 312-318.

Computer Science

2

Scientific paper

Ion waves excited by charged dust beams streaming across or along the geomagnetic field in the ionosphere may be generated by plasma instabilities during aerosol release experiments. The injection speed of the dust and gas is comparable to or larger than the ion thermal speed in the background plasma. The dust grains can get charged by plasma collection from the ambient ionosphere, and can thus act as a charged beam that excites instabilities in the background plasma. The theory is applied to relatively early time scales of the order of ˜0.1-1s in the dust-gas cloud expansion, with wave frequencies that are larger than the ion gyrofrequency, and collisions with neutrals are included.

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