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

Frontiers in Chemistry

Chemistry

Daniel R. Killelea¹  Sofie Knies²  Daniel Schauermann³  Alec M. Wodtke⁴  Rasika E. A. Dissanayake⁴  Tim Schäfer⁴  Arved C. Dorst⁴ 

[1] Department of Chemistry and Biochemistry, Loyola University Chicago, Chicago, IL, United States;Faculty of Biology, Chemistry and Geosciences and Bavarian Center for Battery Technology, Bayreuth, Germany;Institute of Physical Chemistry, University of Göttingen, Göttingen, Germany;Institute of Physical Chemistry, University of Göttingen, Göttingen, Germany;Max-Planck Institute for Multidisciplinary Sciences, Göttingen, Germany;

关键词: oxygen;    silver;    ion imaging;    TPD;    velocity-resolved;    molecular beams;    angular distribution;    energy distribution;   

DOI  :  10.3389/fchem.2023.1248456

 received in 2023-06-27, accepted in 2023-07-20,  发布年份 2023

来源: Frontiers

【 摘 要 】

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.

【 授权许可】

Unknown   
Copyright © 2023 Dorst, Dissanayake, Schauermann, Knies, Wodtke, Killelea and Schäfer.