Open AccessModeling the formation of electrostatic discharges on Mars
Author(s) -
Krauss C. E.,
Horányi M.,
Robertson S.
Publication year - 2006
Publication title -
journal of geophysical research: planets
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/2004je002313
Subject(s) - mars exploration program , martian , atmosphere of mars , triboelectric effect , environmental science , atmosphere (unit) , range (aeronautics) , atmospheric sciences , electric discharge , electric field , atmospheric pressure , astrobiology , martian surface , meteorology , mechanics , physics , materials science , aerospace engineering , electrode , quantum mechanics , engineering , composite material
Mars' low atmospheric pressure and arid, windy climate provide an environment that supports the triboelectric charging of dust. A laboratory experiment has been performed to demonstrate that the vertical motion of dust is sufficient for this charging mechanism to produce strong electric fields capable of creating electrical discharges in a low‐pressure CO 2 atmosphere. Discharges have been visually and electronically detected, and the discharge frequencies and intensities have been measured. The range of pressures required to efficiently produce these discharges has also been examined, demonstrating that electrical discharges can occur under conditions expected on the Martian surface. Additionally, a simple theoretical model has been created to constrain the parameters involved in the dust charging experiment. This model supports the ideas developed in the experimental phase of the project.