Factors affecting the electrification of wind-driven dust studied with laboratory simulations

Details Factors affecting the electrification of wind-driven dust studied with laboratory simulations Factors affecting the electrification of wind-driven dust studied with laboratory simulations

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012p%26ss...60..328m&link_type=abstract

Planetary and Space Science, Volume 60, Issue 1, p. 328-335.

Physics

Scientific paper

The electrification of wind-blown dust grains was studied in a series of laboratory experiments to examine how grain electrification depends on grain size, grain mineralogy, atmospheric composition, atmospheric pressure, and the method of dust dispersal. This work is intended to contribute to a deeper physical understanding of particle electrification on both Mars and Earth. Findings indicate that the amount of electrification per suspended particle generally is independent of dust entrainment process and atmospheric composition. As expected, the electrification process is grain size-dependent, with smaller grains predominantly electrifying negatively. Although there appears to be a weak dependence upon dust mineralogy, this work supports the expectation that dust suspended in the Martian atmosphere will be significantly electrified.

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