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Zeitschrift für Physikalische Chemie

International journal of research in physical chemistry and chemical physics

Editor-in-Chief: Rademann, Klaus


IMPACT FACTOR 2018: 0.975
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2196-7156
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Band 229, Heft 10-12

Hefte

Observation of Translation-to-Vibration Excitation in Acetylene Scattering from Au(111): A REMPI Based Approach

Kai Golibrzuch
  • Institute for Physical Chemistry, Georg-August University of Göttingen, Germany
  • Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
  • Photonic Sensor Technology, Laser-Laboratorium Göttingen e.V., Germany
  • Weitere Artikel des Autors:
  • De Gruyter OnlineGoogle Scholar
/ Joshua H. Baraban
  • Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
  • Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309, USA
  • Weitere Artikel des Autors:
  • De Gruyter OnlineGoogle Scholar
/ Pranav R. Shirhatti
  • Institute for Physical Chemistry, Georg-August University of Göttingen, Germany
  • Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
  • Weitere Artikel des Autors:
  • De Gruyter OnlineGoogle Scholar
/ Jörn Werdecker
  • Institute for Physical Chemistry, Georg-August University of Göttingen, Germany
  • Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
  • Weitere Artikel des Autors:
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/ Christof Bartels
  • Korrespondenzautor
  • Institute for Physical Chemistry, Georg-August University of Göttingen, Germany
  • Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
  • E-Mail
  • Weitere Artikel des Autors:
  • De Gruyter OnlineGoogle Scholar
/ Alec M. Wodtke
  • Institute for Physical Chemistry, Georg-August University of Göttingen, Germany
  • Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
  • Weitere Artikel des Autors:
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Online erschienen: 03.07.2015 | DOI: https://doi.org/10.1515/zpch-2015-0606

Abstract

We present quantum-state and velocity resolved experiments for molecular beam scattering of acetylene (C2H2) from a single-crystal Au(111) surface, observations that reveal translational, rotational and vibrational inelasticity. The experiments are made possible by a novel (1 + 2) REMPI scheme for acetylene. The scattered molecules' velocity distributions as well as their ro-vibrational quantum-state distributions depend on the translational energy of incidence, EI, providing unambiguous evidence that the scattered molecules were not trapped and equilibrated on the surface. We report the EI-dependence of the collisional excitation of one and two quanta of the trans-bending vibrational mode, ν4 = 0 → 1, 2, which is consistent with a mechanism involving conversion of incidence translational energy to acetylene vibration. Rotationally resolved velocity measurements on scattered acetylene in its ground vibrational state are interpreted in terms of orientation-dependent rotational and vibrational excitation probabilities.

Keywords: Molecule-Surface Scattering

Artikelinformationen

Angenommen: 07.06.2015

Erhalten: 30.03.2015

Online erschienen: 03.07.2015

Erschienen im Druck: 28.10.2015


Quellenangabe: Zeitschrift für Physikalische Chemie, Band 229, Heft 10-12, Seiten 1929–1949, ISSN (Online) 2196-7156, ISSN (Print) 0942-9352, DOI: https://doi.org/10.1515/zpch-2015-0606.

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