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Title:Oscillator Strengths And Predissociation Rates For W−x Bands And The 4p5p Complex In 13c16o And 12c18o
Author(s):Federman, Steven
Contributor(s):Joyeux, Denis; de Oliveira, Nelson; Smith, Peter L; Lyons, James R; Gavilan, Lisseth; Heays, Alan; Stark, Glenn; Lemaire, Jean Louis; Eidelsberg, Michele
Abstract:We are conducting experiments on the DESIRS beam-line at the SOLEIL Synchrotron to acquire the necessary data on oscillator strengths and predissociation rates for modeling CO photochemistry in astronomical environments. A VUV Fourier Transform Spectrometer provides a resolving power of about 350,000, allowing us to discern individual lines in electronic transitions. Here we focus on results obtained from absorption spectra of $^{13}$C$^{16}$O and $^{12}$C$^{18}$O for the $W~^1\Pi~-~X~^1\Sigma^+$ bands with $v^{\prime}=0-3$ and $v^{\prime\prime}=0$ and the four overlapping bands (three resolved and one diffuse) observed between 92.97 and 93.35 nm. The three resolved bands are transitions to the upper levels 4p$\pi$(2), 5p$\pi$(0), and 5p$\sigma$(0) of the 4p(2) and 5p(0) complexes, and the diffuse band is associated with a non Rydberg level I $^1\Pi$; weak features in $^{13}$C$^{16}$O are likely associated with absorption to the 4p$\sigma$(2) and II $^1\Pi$ levels. Several perturbations are also revealed in the high-resolution spectra. We compare our results with earlier determinations for these isotopologues of CO, as well as our SOLEIL measurements on $^{12}$C$^{16}$O.
Issue Date:2014-06-16
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:Federman, S.; Joyeux, D.; de Oliveira, N.; Smith, P.L.; Lyons, J.R.; Gavilan, L.; Heays, A.; Stark, G.; Lemaire, J.L.; Eidelsberg, M. OSCILLATOR STRENGTHS AND PREDISSOCIATION RATES FOR W−X BANDS AND THE 4P5P COMPLEX IN 13C16O AND 12C18O. Proceedings of the International Symposium on Molecular Spectroscopy, Urbana, IL, June 16-21, 2014. DOI: 10.15278/isms.2014.MF10
Rights Information:Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License.
Date Available in IDEALS:2014-09-17

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