Efficiency of molecular hydrogen formation on silicates

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

doi:10.1086/310746

Efficiency of molecular hydrogen formation on silicates

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

^*Corresponding author for this work

Racah Institute of Physics

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

159 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 language	English
Pages (from-to)	L131-L134
Journal	Astrophysical Journal
Volume	483
Issue number	2 PART II
DOIs	https://doi.org/10.1086/310746
State	Published - 1997

Keywords

Dust, extinction
ISM: abundances
ISM: molecules
Molecular processes

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10.1086/310746

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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.",

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AU - Pirronello, Valerio

AU - Biham, Ofer

AU - Liu, Ciu

AU - Shen, Lyong

AU - Vidali, Gianfranco

PY - 1997

Y1 - 1997

N2 - 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.

AB - 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.

KW - Dust, extinction

KW - ISM: abundances

KW - ISM: molecules

KW - Molecular processes

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SN - 0004-637X

VL - 483

SP - L131-L134

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 PART II

ER -

Efficiency of molecular hydrogen formation on silicates

Abstract

Keywords

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