Efficiency of Molecular Hydrogen Formation on Silicates

Details Efficiency of Molecular Hydrogen Formation on Silicates Efficiency of Molecular Hydrogen Formation on Silicates

1997-04-24

arxiv.org/abs/astro-ph/9704236v1

Astronomy and Astrophysics

Astrophysics

Accepted for publications in: Astrophysical Journal Letters. Corresponding author: Gianfranco Vidali: gvidali@syr.edu (http:

Scientific paper

10.1086/310746

We report on laboratory measurements of molecular hydrogen formation and recombination on an olivine slab as a function of surface temperature under conditions relevant to those encountered in the interstellar medium. On the basis of our experimental evidence, we recognize that there are two main regimes of H coverage that are of astrophysical importance; for each of them we provide an expression giving the production rate of molecular hydrogen in interstellar clouds.

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