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Wall-collision line broadening of molecular oxygen within nanoporous materials

På svenska

Author

  • Can Xu
  • Märta Lewander
  • Stefan Andersson-Engels
  • Erik Adolfsson
  • Tomas Svensson
  • Sune Svanberg

Summary, in English

Wall-collision broadening of near-infrared absorption lines of molecular oxygen confined in nanoporous zirconia is studied by employing high-resolution diode-laser spectroscopy. The broadening is studied for pores of different sizes under a range of pressures, providing new insights on how wall collisions and intermolecular collisions influence the total spectroscopic line profile. The pressure series show that wall-collision broadening is relatively more prominent under reduced pressures, enabling sensitive means to probe pore sizes of porous materials. In addition, we show that the total wall-collision-broadened profile strongly deviates from a Voigt profile and that wall-collision broadening exhibits an additive-like behavior to the pressure and Doppler broadening.

Department/s

Publishing year

2011

Language

English

Publication/Series

Physical Review A (Atomic, Molecular and Optical Physics)

Volume

84

Issue

4

Document type

Journal article

Publisher

American Physical Society

Topic

  • Atom and Molecular Physics and Optics

Status

Published

Research group

  • Biophotonics

ISBN/ISSN/Other

  • ISSN: 1050-2947