Internal excitation mechanisms of neutral atoms and molecules emitted from ion bombarded organic thin films

C. A. Meserole, E. Vandeweert, Z. Postawa, N. Winograd

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Resonance enhanced laser photoionization schemes are employed to ionize C6H6 molecules and Ag atoms desorbed from Ag{111} by 8 keV Ar+ ion bombardment. These schemes allow for probing ground state and internally excited species. Time-of-flight mass spectrometry is utilized to detect the postionized atoms and molecules desorbed in a neutral charge state and for determining their kinetic energy distributions from time-of-flight measurements. We find that internally excited species must originate from near the surface/vacuum interface. The species detected in the ground state may originate from deeper in the sample matrix, as well as from the surface.

Original languageEnglish (US)
Pages (from-to)15686-15693
Number of pages8
JournalJournal of Physical Chemistry B
Volume108
Issue number40
DOIs
StatePublished - Oct 7 2004

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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