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Updated: Jun 8, 2026

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
Published on: June 28, 2016
Dissociation of physisorbed H2 through low-energy electron scattering resonances
1Department of Physics, Göteborg University, SE-412 96 Göteborg, Sweden.
Abstract:
Electron induced dissociation of physisorbed H2, HD, and D2 proceeds, as we observe in electron energy-loss measurements of the resulting atomic species, with a high quantum efficiency via the 2Σg(+) core excited electron scattering resonances. We find that the predominant decay of the temporary H2(-) state to the neutral excited 3Σu(+) parent state, which is intramolecularly antibonding, provides a sufficiently long-lived channel for dissociation to occur with high probability, even in the proximity of a metal surface.
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