Abstract
Autoionization from vibrationally resolved core excited states is demonstrated, using nitrogen physisorbed on graphite. The results are compared to photoemission and x-ray absorption, and reveal an adsorption induced elongation of the internuclear separation in the 3${\mathrm{\ensuremath{\sigma}}}_{\mathit{g}}^{\mathrm{\ensuremath{-}}1}$ final state. It is demonstrated that it is only in the case of vibrationally selective excitation that the autoionization final states coincide with the photoemission final states.
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