Physics
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufm.p13b0150f&link_type=abstract
American Geophysical Union, Fall Meeting 2005, abstract #P13B-0150
Physics
3304 Atmospheric Electricity, 3346 Planetary Meteorology (5445, 5739), 5405 Atmospheres (0343, 1060), 5445 Meteorology (3346)
Scientific paper
It has been demonstrated via laboratory studies, numerical simulations and desert field tests that dust devils and possibly larger dust storms contain significant electrical energy, with electric fields in excess of 20 kV/m. Such fields in Martian dust devils and storms will accelerate electrons (i.e., increase the electron drift speed) thereby creating secondary electrons via impact ionization, the formation of negative ions via dissociative attachment, and new chemical pathway in subsequent recombination. In this presentation, we discuss the nature of the collisional CO2+/O- plasma that may form in the dust devil and storm, the possibility of glow emissions, and the implications for stability of important species such as methane.
Atreya Sushil
Catling David
Cummer Steven
Delory Greg
Farrell William
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