The rotationally-resolved absorption spectrum of formaldehyde from 6547 to 6804 cm(-1)

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The rotationally-resolved absorption spectrum of formaldehyde from 6547 to 6804 cm(-1)

Staak, Michael; Gas, Edward G.; Venables, Dean S.; Ruth, Albert A.
Date: 2005-01
Copyright: Copyright © 2004 Elsevier Inc. All rights reserved. NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Molecular Spectroscopy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Molecular Spectroscopy, Volume 229, Issue 1, January 2005, Pages 115-121, ISSN 0022-2852, 10.1016/j.jms.2004.08.019.
Related: http://www.sciencedirect.com/science/article/pii/S0022285204002735
Citation: Michael Staak, Edward W. Gash, Dean S. Venables, Albert A. Ruth, The rotationally-resolved absorption spectrum of formaldehyde from 6547 to 6804 cm(−1), Journal of Molecular Spectroscopy, Volume 229, Issue 1, January 2005, Pages 115-121, ISSN 0022-2852, 10.1016/j.jms.2004.08.019.
Published Version: 10.1016/j.jms.2004.08.019

Abstract:

The room temperature absorption spectrum of formaldehyde, H2CO, from 6547 to 6804 cm(-1) (1527-1470 nm) is reported with a spectral resolution of 0.001 cm(-1). The spectrum was measured using cavity-enhanced absorption spectroscopy (CEAS) and absorption cross-sections were calculated after calibrating the system using known absorption lines of H2O and CO2. Several vibrational combination bands occur in this region and give rise to a congested spectrum with over 8000 lines observed. Pressure broadening coefficients in N-2, O-2, and H2CO are reported for an absorption line at 6780.871 cm(-1) and in N-2 for an absorption line at 6684.053 cm(-1).

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