Wall-collision line broadening of molecular oxygen within nanoporous materials

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

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.

Detaljer

Författare
  • Can Xu
  • Märta Lewander
  • Stefan Andersson-Engels
  • Erik Adolfsson
  • Tomas Svensson
  • Sune Svanberg
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Atom- och molekylfysik och optik
Originalspråkengelska
TidskriftPhysical Review A (Atomic, Molecular and Optical Physics)
Volym84
Utgåva nummer4
StatusPublished - 2011
PublikationskategoriForskning
Peer review utfördJa

Nedladdningar

Ingen tillgänglig data