Issue 20, 2011
From the journal:

Physical Chemistry Chemical Physics

Collision-induced absorption in the O2 B-band region near 670 nm

Frans R. Spiering,*a   Maria B. Kiseleva,b   Nikolay N. Filippov,b   Line van Kesterena  and  Wim J. van der Zandea  

* Corresponding authors

a Department of Molecular and Biophysics, IMM, Radboud Univerisity, PO box 9010, 6500 GL Nijmegen, The Netherlands
E-mail: f.spiering@science.ru.nl
Fax: +31 (0)24 365 33 11
Tel: +31 (0)24 3653012

b Department of Molecular Spectroscopy, Faculty of Physics, St.-Petersburg State University, Ulyanovskaya, 1 Peterhof, St.-Petersburg, Russia

Abstract

We have determined the collision-induced absorption (CIA) spectrum in the O2 B-band in pure oxygen. We present absolute extinction coefficients of the minimums in between rotational lines using cavity ring-down spectroscopy. The measured extinction is corrected for the B-band magnetic dipole absorption using a model which includes line-mixing. The remaining extinction consists of collision-induced absorption and Rayleigh scattering. We retrieve the magnitude of the Rayleigh scattering and the CIA spectrum based on their individual different behavior with density. The CIA spectrum of the B-band resembles that of the oxygen A-band in shape but not in magnitude. The contribution of CIA to the total B-band absorption is 40% higher in comparison to that of the A-band.

Graphical abstract: Collision-induced absorption in the O2 B-band region near 670 nm

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Article information

DOI
https://doi.org/10.1039/C1CP20403C
Article type
Paper
Submitted
15 Feb 2011
Accepted
23 Mar 2011
First published
15 Apr 2011

Phys. Chem. Chem. Phys., 2011,13, 9616-9621

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Collision-induced absorption in the O2 B-band region near 670 nm

F. R. Spiering, M. B. Kiseleva, N. N. Filippov, L. van Kesteren and W. J. van der Zande, Phys. Chem. Chem. Phys., 2011, 13, 9616 DOI: 10.1039/C1CP20403C

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