The Effect of Enhanced Hydrogen on Non-thermal Escape of Atoms

Details The Effect of Enhanced Hydrogen on Non-thermal Escape of Atoms The Effect of Enhanced Hydrogen on Non-thermal Escape of Atoms

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm...p41a04f&link_type=abstract

American Geophysical Union, Spring Meeting 2001, abstract #P41A-04

Physics

2459 Planetary Ionospheres (5435, 5729, 6026, 6027, 6028), 6225 Mars

Scientific paper

We have investigated the effect of enhanced hydrogen densities on photochemical escape mechanisms from the Martian atmosphere. We find that reduced escape rates of heavy atoms (O, C, N) result from two causes: the destruction of ions, which are the sources and many non-thermal escape mechanisms, such as dissociative recombination and ion-molecule reactions, and the increasing fraction of H and H2 in the exosphere at earlier times. Hydrogen is thought to escape at a much higher rate than O, C, and N, and thus in previous epochs, the thermosphere should consist of a larger fraction of these light gases. A very large amount of H and H2 in the exosphere will raise the height of the exobase and dominate the absorption of EUV radiation, and the escape of species by processes such as photodissociation of molecules will be reduced.

Affiliated with

Also associated with

No associations

Rating

The Effect of Enhanced Hydrogen on Non-thermal Escape of Atoms does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Effect of Enhanced Hydrogen on Non-thermal Escape of Atoms, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Effect of Enhanced Hydrogen on Non-thermal Escape of Atoms will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1272179