Wall-collision line broadening of molecular oxygen within nanoporous materials
Författare
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.
Avdelning/ar
Publiceringsår
2011
Språk
Engelska
Publikation/Tidskrift/Serie
Physical Review A (Atomic, Molecular and Optical Physics)
Volym
84
Issue
4
Fulltext
- Available as PDF - 564 kB
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Dokumenttyp
Artikel i tidskrift
Förlag
American Physical Society
Ämne
- Atom and Molecular Physics and Optics
Status
Published
Forskningsgrupp
- Biophotonics
ISBN/ISSN/Övrigt
- ISSN: 1050-2947