On the Surface Sputtering Effects of Magnetospheric Charged Particles at Mercury

Details On the Surface Sputtering Effects of Magnetospheric Charged Particles at Mercury On the Surface Sputtering Effects of Magnetospheric Charged Particles at Mercury

Nov 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...418..451i&link_type=abstract

Astrophysical Journal v.418, p.451

Astronomy and Astrophysics

Astronomy

29

Atomic Processes, Planets And Satellites: Individual Mercury

Scientific paper

A simple model of the atomic sodium exosphere is used in conjunction with a magnetospheric field model to study the ion trajectories of Na+ ions in the magnetosphere of Mercury. It is found that low-energy (<3 keV) ions usually encounter the planetary surface at high latitude as a result of the finite size of the planet and the E × B drift pattern of the ions. On the other hand, high-energy (>10 keV) particles tend to hit the planetary surface on the nightside hemisphere at low latitudes. Such precipitation patterns of the exospheric ions might have important implication on the recent observations of enhancement of sodium emissions at high latitude regions of Mercury.

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