Abstract
The rotational energy distribution N(J) of NO desorbed from a Pt(111) surface induced by valence electron excitation is analyzed by a simple impulse model. The In N(J) versus \( \sqrt {{{E_r}}} \) plot shows a linear relation, where E r is the rotational energy. Both the lifetime and the critical residence time in the intermediate excited state can be estimated to be ~10 fs from the gradient and the onset of the linear relation, respectively, although some ambiguity remains in the estimation of angular frequency for frustrated rotation of adsorbed NO at the intermediate excited state.
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