EFFICIENCY OF MOLECULAR-HYDROGEN FORMATION ON SILICATES

Authors
PIRRONELLO V BIHAM O LIU C SHEN LO VIDALI G
Citation
V. Pirronello et al., EFFICIENCY OF MOLECULAR-HYDROGEN FORMATION ON SILICATES, The Astrophysical journal, 483(2), 1997, pp. 131-134
Citations number
22
Categorie Soggetti
Astronomy & Astrophysics
Journal title
The Astrophysical journal → ACNP
ISSN journal
0004637X
Volume
483
Issue
2
Year of publication
1997
Part
2
Pages
131 - 134
Database
ISI
SICI code
0004-637X(1997)483:2<131:EOMFOS>2.0.ZU;2-Z
Abstract
We report on laboratory measurements of molecular hydrogen formation a nd recombination on an olivine slab as a function of surface temperatu re under conditions relevant to those encountered in the interstellar medium. On the basis of our experimental evidence, we recognize that t here are two main regimes of H coverage that are of astrophysical impo rtance; for each of them we provide an expression giving the productio n rate of molecular hydrogen in interstellar clouds.