Molecular Hydrogen Formation on Ice Under Interstellar Conditions
The Astrophysical Journal2005Vol. 627(2), pp. 850–860
Citations Over TimeTop 10% of 2005 papers
Hagai B. Perets, Ofer Biham, Giulio Manicò, V. Pirronello, Joseph Roser, Sol Swords, Gianfranco Vidali
Abstract
The results of experiments on the formation of molecular hydrogen on low density and high density amorphous ice surfaces are analyzed using a rate equation model. The activation energy barriers for the relevant diffusion and desorption processes are obtained. The more porous morphology of the low density ice gives rise to a broader spectrum of energy barriers compared to the high density ice. Inserting these parameters into the rate equation model under steady state conditions we evaluate the production rate of molecular hydrogen on ice-coated interstellar dust grains.
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