Efficiency of molecular hydrogen formation on silicates

Valerio Pirronello, Ofer Biham, Ciu Liu, Lyong Shen, Gianfranco Vidali

Research output: Contribution to journalArticle

144 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)L131-L134
JournalAstrophysical Journal
Volume483
Issue number2 PART II
DOIs
StatePublished - 1997

Keywords

  • Dust, extinction
  • ISM: abundances
  • ISM: molecules
  • Molecular processes

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Pirronello, V., Biham, O., Liu, C., Shen, L., & Vidali, G. (1997). Efficiency of molecular hydrogen formation on silicates. Astrophysical Journal, 483(2 PART II), L131-L134. https://doi.org/10.1086/310746