Laboratory measurements of molecular hydrogen formation on amorphous water ice

G. Manicò; G. Ragunì; V. Pirronello; J. E. Roser; G. Vidali

doi:10.1086/319116

Laboratory measurements of molecular hydrogen formation on amorphous water ice

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

Department of Physics

Research output: Contribution to journal › Article › peer-review

94 Scopus citations

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)
Pages (from-to)	L253-L256
Journal	Astrophysical Journal
Volume	548
Issue number	2 PART 2
DOIs	https://doi.org/10.1086/319116
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

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10.1086/319116

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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.",

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AU - Ragunì, G.

AU - Pirronello, V.

AU - Roser, J. E.

AU - Vidali, G.

PY - 2001/2/20

Y1 - 2001/2/20

N2 - 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.

AB - 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.

KW - ISM: abundances

KW - ISM: clouds

KW - ISM: molecules

KW - Molecular processes

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