Using Ion Imaging to Measure Velocity Distributions in Surface Scattering Experiments

Dan J Harding; J Neugebohren; Daniel J Auerbach; T N Kitsopoulos; Alec M Wodtke

doi:10.1021/acs.jpca.5b06272

Using Ion Imaging to Measure Velocity Distributions in Surface Scattering Experiments

J Phys Chem A. 2015 Dec 17;119(50):12255-62. doi: 10.1021/acs.jpca.5b06272. Epub 2015 Oct 6.

Authors

Dan J Harding^{1

2}, J Neugebohren^{1

2}, Daniel J Auerbach^{1

2}, T N Kitsopoulos^{1

2

3

4}, Alec M Wodtke^{1

2}

Affiliations

¹ Institute for Physical Chemistry, Georg-August University of Göttingen , 37077 Göttingen, Germany.
² Max Planck Institute for Biophysical Chemistry , 37077 Göttingen, Germany.
³ Department of Chemistry, University of Crete , 71003 Heraklion, Greece.
⁴ Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas , 71003 Heraklion, Greece.

PMID: 26418228
DOI: 10.1021/acs.jpca.5b06272

Abstract

We present a new implementation of ion imaging for the study of surface scattering processes. The technique uses a combination of spatial ion imaging with laser slicing and delayed pulsed extraction. The scattering velocities of interest are parallel to the imaging plane, allowing speed and angular distributions to be extracted from a single image. The first results of direct scattering of N2 from a clean, single-crystal Au(111) surface are reported, and the speed resolution is shown to be competitive with current state-of-the-art time-of-flight methods for velocity measurements while providing simultaneous measurements of in-plane angular distributions.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Molecular Probe Techniques / instrumentation*
Optical Phenomena
Scattering, Radiation*
Spectrum Analysis / methods*
Surface Properties