Effective grain surface area in the formation of molecular hydrogen in interstellar clouds

2006/08/04 by Sandip Kumar Chakrabarti, Ankan Das, Kinsuk Acharyya +2 · 2 citations
Chemistry · Physics and Astronomy · #Advanced Chemical Physics Studies #Astrophysics and Star Formation Studies #Molecular Spectroscopy and Structure #astro-ph

paper · pdf · doi:10.1051/0004-6361:20065335

published as Astron.Astrophys.457:167C,2006 · 8 pages, 5 figures in eps format

openalex publication_date 2006/08/04 · arxiv created 2008/06/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30

Abstract

Aims.In interstellar clouds, molecular hydrogens are formed from atomic hydrogen on grain surfaces. An atomic hydrogen hops around until it finds another one with which it combines. This necessarily implies that the average recombination time, or equivalently, the effective grain surface area depends on the relative numbers of atomic hydrogen influx rate and the number of sites on the grain. Our aim is to discover this dependency.

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