Ejected Particles after Impact Splash on Mars: Electrification

Document detail

ID

oai:arXiv.org:2409.10287

Topic

Astrophysics - Earth and Planetary... Astrophysics - Instrumentation and...

Author

Becker, T. Onyeagusi, F. C. Teiser, J. Jardiel, T. Peiteado, M. Munoz, O. Martikainen, J. Martin, J. C. Gomez Merrison, J. Wurm, G.

Year

2024

listing date

9/18/2024

Keywords

charges astrophysics

Metrics

Abstract

Within the RoadMap project we investigated the microphysical aspects of particle collisions during saltation on the Martian surface in laboratory experiments.

Following the size distribution of ejected particles, their aerodynamic properties and aggregation status upon ejection, we now focus on the electrification and charge distribution of ejected particles.

We analyzed rebound and ejection trajectories of grains in a vacuum setup with a strong electric field of 100 kV/m and deduced particle charges from their acceleration.

The ejected particles have sizes of about 10 to 100 microns.

They carry charges up to $10^5$ e or charge densities up to $> 10^7$ e/mm$^2$.

Within the given size range, we find a small bias towards positive charges.

;Comment: Preprint, 7 pages, 3 figures

Becker, T.,Onyeagusi, F. C.,Teiser, J.,Jardiel, T.,Peiteado, M.,Munoz, O.,Martikainen, J.,Martin, J. C. Gomez,Merrison, J.,Wurm, G., 2024, Ejected Particles after Impact Splash on Mars: Electrification