Hyperthermal velocity distributions of recombinatively-desorbing oxygen from 
Ag(111)

Dorst, Arved Cedric; Dissanayake, Rasika E. A.; Schauermann, D.; Knies, S.; Wodtke, Alec M.; Killelea, D.R.; Schäfer, Tim

doi:10.3389/fchem.2023.1248456

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Hyperthermal velocity distributions of recombinatively-desorbing oxygen from Ag(111)

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Dorst, Arved Cedric
Department of Dynamics at Surfaces, Max Planck Institute for Multidisciplinary Sciences, Max Planck Society;

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Dissanayake, Rasika E. A.
Department of Dynamics at Surfaces, Max Planck Institute for Multidisciplinary Sciences, Max Planck Society;

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Wodtke, Alec M.
Department of Dynamics at Surfaces, Max Planck Institute for Multidisciplinary Sciences, Max Planck Society;

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Schäfer, Tim
Department of Dynamics at Surfaces, Max Planck Institute for Multidisciplinary Sciences, Max Planck Society;

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Citation

Dorst, A. C., Dissanayake, R. E. A., Schauermann, D., Knies, S., Wodtke, A. M., Killelea, D., et al. (2023). Hyperthermal velocity distributions of recombinatively-desorbing oxygen from Ag(111). Frontiers in Chemistry, 11: 1248456. doi:10.3389/fchem.2023.1248456.

Cite as: https://hdl.handle.net/21.11116/0000-000D-BFCD-6

Abstract

This study presents velocity-resolved desorption experiments of recombinatively-desorbing oxygen from Ag (111). We combine molecular beam techniques, ion imaging, and temperature-programmed desorption to obtain translational energy distributions of desorbing O2. Molecular beams of NO2 are used to prepare a p (4 × 4)-O adlayer on the silver crystal. The translational energy distributions of O2 are shifted towards hyperthermal energies indicating desorption from an intermediate activated molecular chemisorption state.