Abstract
We report on an experimental study of the formation of hydrogen molecules by surface recombination of adsorbed H atoms on amorphous water ice under conditions closely simulating those encountered in astrophysical environments. Our results show that hydrogen recombination via surface reactions on icy mantles on grains is able to account for H2 formation in dense cloud environments.
Original language | English (US) |
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Pages (from-to) | L253-L256 |
Journal | Astrophysical Journal |
Volume | 548 |
Issue number | 2 PART 2 |
DOIs | |
State | Published - Feb 20 2001 |
Keywords
- ISM: abundances
- ISM: clouds
- ISM: molecules
- Molecular processes
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science