Computer Science
Scientific paper
Oct 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf.1858r&link_type=abstract
EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.1858
Computer Science
Scientific paper
Atmospheric sputtering is well-known process acting on planetary atmospheres in a similar way in which ion-sputtering acts on surfaces of airless bodies: energetic ions impact on the upper regions of planetary atmospheres and may cause significant escape directly or after a series of bouncing, or they may lose velocity and form an atmospheric corona. In particular, a collision cascade below the exobase is expected, and the yield of the process may be very high, allowing a consistent flux outward from the atmosphere. In this work we study this process due to the energy ions originating from both the solar wind and the exospheric photoions for two different planets of the Solar System: Mars and Venus. The simulation results show low neutral sputtered flux in the martian system (1018-1019 part./s) but a remarkable contribution of atmospheric sputtering for Venus in the case where the solar wind protons impacts on the upper atmosphere (1022-1023 part./s). Further results and comparisons will be shown here
Kallio Esa
Mangano Valeria
Milillo Anna
Mura Antonio
Orsini Stefano
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