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Direct measurement of core-level relaxation dynamics on a surface-adsorbate system.

Authors
  • Miaja-Avila, L
  • Saathoff, G
  • Mathias, S
  • Yin, J
  • La-o-vorakiat, C
  • Bauer, M
  • Aeschlimann, M
  • Murnane, M M
  • Kapteyn, H C
Type
Published Article
Journal
Physical review letters
Publication Date
Jul 25, 2008
Volume
101
Issue
4
Pages
46101–46101
Identifiers
PMID: 18764340
Source
Medline
License
Unknown

Abstract

The coupling between electronic states in a surface-adsorbate system is fundamental to the understanding of many surface interactions. In this Letter, we present the first direct time-resolved observations of the lifetime of core-excited states of an atom adsorbed onto a surface. By comparing laser-assisted photoemission from a substrate with a delayed Auger decay process from an adsorbate, we measure the lifetime of the 4d(-1) core level of xenon on Pt(111) to be 7.1+/-1.1 fs. This result opens up time-domain measurements of surface dynamics where energy-resolved measurements may provide incomplete information.

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