Dynamics of recombinative desorption: Angular distributions of H2, HD, and D2 desorbing from Cu(111)
- 1 June 1991
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 94 (11) , 7499-7501
- https://doi.org/10.1063/1.460181
Abstract
We have determined the angular distributions of H2, HD, and D2 desorbing from Cu(111) for surface temperatures in the range 370–800 K. These are found to be strongly peaked and symmetric about the surface normal in every case. Results for all three isotopes are found to be indistinguishable, being close to a cos 12θf distribution at 600 K, slightly narrower at 370 K, and slightly broader at 800 K. Results are discussed in terms of other previous desorption measurements and related to adsorption data via detailed balance.Keywords
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