Journal article
Desorption of H atoms from graphite (0001) using XUV free electron laser pulses
The desorption of neutral H atoms from graphite with femtosecond XUV pulses is reported. The velocity distribution of the atoms peaks at extremely low kinetic energies. A DFT-based electron scattering calculation traces this distribution to desorption out of specific adsorption sites on graphite, and identifies the highest vibrational state in the adsorbate potential as a major source for the slow atoms.
It is evident that multiple electron scattering processes are required for this desorption. A direct electronic excitation of a repulsive hydrogen-carbon bond seems not to be important.
Language: | English |
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Year: | 2010 |
Pages: | 291-294 |
ISSN: | 18734448 and 00092614 |
Types: | Journal article |
DOI: | 10.1016/j.cplett.2010.10.040 |
ORCIDs: | Olsen, Thomas and Schiøtz, Jakob |