The formation of vibrationally excited hydrogen molecules on carbon surfaces.

Details The formation of vibrationally excited hydrogen molecules on carbon surfaces. The formation of vibrationally excited hydrogen molecules on carbon surfaces.

Jan 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...305..687g&link_type=abstract

Astronomy and Astrophysics, v.305, p.687

Astronomy and Astrophysics

Astrophysics

20

Molecular Data, Molecular Processes, Dust, Extinction, Ism: Molecules, Methods: Laboratory

Scientific paper

A novel technique for the measurement of the excitation of molecular hydrogen formed on surfaces has been applied to the study of H_2_ formation on carbon. The results show that on certain carbon surfaces H_2_ may form in vibrational levels as high as v=7, and that at a surface temperature of 90K between 2.6 and 7% of the molecules can be found in the v=1 level. This supports the proposal that a significant contribution to the population of vibrationally excited hydrogen in the interstellar medium comes from the formation of molecular hydrogen on carbonaceous interstellar grains.

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