Maintaining the NA atmosphere of Mercury

Details Maintaining the NA atmosphere of Mercury Maintaining the NA atmosphere of Mercury

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993icar..101..293k&link_type=abstract

Icarus (ISSN 0019-1035), vol. 101, no. 2, p. 293-312.

Computer Science

21

Mercury Atmosphere, Planetary Composition, Planetary Crusts, Sodium, Mercury Surface, Planetology, Regolith, Mercury (Planet), Sodium, Atmosphere, Origin, Source, Crust, Ions, Abundance, Gas Phase, Diffusion, Surface, Exosphere, Regolith, Flow, Structure, Composition, Temperature, Silicates, Calculations, Flux, Porosity, Fissures, Vents, Potassium, Vaporization, Impact Effects, Sputtering, Desorption, Photons, Environment, Megaregolith

Scientific paper

The possible sources of the Na atmosphere of Mercury are calculatively studied. The likely structure, composition, and temperature of the planet's upper crust is examined along with the probable flux of Na from depth by grain boundary diffusion and by Knudsen flow. The creation of fresh regolith is considered along with mechanisms for supplying Na from the surface to the exosphere. The implications of the calculations for the probable abundances in the regolith are discussed.

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