Formation of molecular hydrogen on amorphous water ice: Influence of morphology and ultraviolet exposure

J. E. Roser, G. Manicò, V. Pirronello, G. Vidali

Research output: Contribution to journalArticle

58 Scopus citations

Abstract

In this paper, we report on the formation of molecular hydrogen on different types of amorphous water ice. We show that mass spectra of desorbing molecules upon formation are sensitive to the way in which ice is deposited on a cold substrate, to its thermal history, and to the action of UV photons. Implications that these results bear on H2 formation in dense quiescent clouds are presented and discussed.

Original languageEnglish (US)
Pages (from-to)276-284
Number of pages9
JournalAstrophysical Journal
Volume581
Issue number1 I
DOIs
StatePublished - Dec 10 2002

Keywords

  • Astrochemistry
  • Dust, extinction
  • ISM: molecules
  • Methods: laboratory
  • Molecular processes

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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