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Wall-collision line broadening of molecular oxygen within nanoporous materials
Lund University.
Lund University.
Lund University.
RISE - Research Institutes of Sweden, Swerea, Swerea IVF.ORCID iD: 0000-0003-4860-8763
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2011 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 84, no 4Article in journal (Refereed) Published
Abstract [en]

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. © 2011 American Physical Society.

Place, publisher, year, edition, pages
2011. Vol. 84, no 4
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:ri:diva-13356DOI: 10.1103/PhysRevA.84.042705Scopus ID: 2-s2.0-80053998583OAI: oai:DiVA.org:ri-13356DiVA, id: diva2:973562
Available from: 2016-09-22 Created: 2016-09-22 Last updated: 2017-08-09Bibliographically approved

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