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Vibrational Branching Ratios and Asymmetry Parameters in the Photoionization of CO(2) in the Region Between 650 Å and 840 Å
The vibrational branching ratios and asymmetry parameters for CO(2) have been determined in the wavelength region of 650 Å to near the ionization onset at about 840 Å. The study was performed using synchrotron radiation from the Daresbury storage ring that was dispersed with a 5 m grating monochomat...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
[Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology
2001
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4862820/ https://www.ncbi.nlm.nih.gov/pubmed/27500048 http://dx.doi.org/10.6028/jres.106.038 |
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author | Parr, A. C. West, J. B. King, M. R. F. Ueda, K. Dehmer, P. M. Dehmer, J. L. |
author_facet | Parr, A. C. West, J. B. King, M. R. F. Ueda, K. Dehmer, P. M. Dehmer, J. L. |
author_sort | Parr, A. C. |
collection | PubMed |
description | The vibrational branching ratios and asymmetry parameters for CO(2) have been determined in the wavelength region of 650 Å to near the ionization onset at about 840 Å. The study was performed using synchrotron radiation from the Daresbury storage ring that was dispersed with a 5 m grating monochomator that afforded resolution of 0.1 Å to 0.2 Å. This resolution allowed the study of the branching ratios and asymmetry parameters with enough detail to see the changes in the parameters within the pronounced autoionization structure in CO(2) in this wavelength region. While the electron spectrometer resolution was not sufficient to resolve the spin orbit and Renner-Teller splitting in the photoelectron spectra, we are able to fit the data with a model that identifies the major structure in terms of the symmetric stretch and elements of the asymmetric stretch and bending modes. A calculation of the expected relative vibrational excitations based upon the Franck-Condon principle clearly showed non-Franck-Condon behavior in some of the vibrational-electronic transitions. |
format | Online Article Text |
id | pubmed-4862820 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2001 |
publisher | [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology |
record_format | MEDLINE/PubMed |
spelling | pubmed-48628202016-08-05 Vibrational Branching Ratios and Asymmetry Parameters in the Photoionization of CO(2) in the Region Between 650 Å and 840 Å Parr, A. C. West, J. B. King, M. R. F. Ueda, K. Dehmer, P. M. Dehmer, J. L. J Res Natl Inst Stand Technol Article The vibrational branching ratios and asymmetry parameters for CO(2) have been determined in the wavelength region of 650 Å to near the ionization onset at about 840 Å. The study was performed using synchrotron radiation from the Daresbury storage ring that was dispersed with a 5 m grating monochomator that afforded resolution of 0.1 Å to 0.2 Å. This resolution allowed the study of the branching ratios and asymmetry parameters with enough detail to see the changes in the parameters within the pronounced autoionization structure in CO(2) in this wavelength region. While the electron spectrometer resolution was not sufficient to resolve the spin orbit and Renner-Teller splitting in the photoelectron spectra, we are able to fit the data with a model that identifies the major structure in terms of the symmetric stretch and elements of the asymmetric stretch and bending modes. A calculation of the expected relative vibrational excitations based upon the Franck-Condon principle clearly showed non-Franck-Condon behavior in some of the vibrational-electronic transitions. [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 2001 2001-10-01 /pmc/articles/PMC4862820/ /pubmed/27500048 http://dx.doi.org/10.6028/jres.106.038 Text en https://creativecommons.org/publicdomain/zero/1.0/ The Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright. |
spellingShingle | Article Parr, A. C. West, J. B. King, M. R. F. Ueda, K. Dehmer, P. M. Dehmer, J. L. Vibrational Branching Ratios and Asymmetry Parameters in the Photoionization of CO(2) in the Region Between 650 Å and 840 Å |
title | Vibrational Branching Ratios and Asymmetry Parameters in the Photoionization of CO(2) in the Region Between 650 Å and 840 Å |
title_full | Vibrational Branching Ratios and Asymmetry Parameters in the Photoionization of CO(2) in the Region Between 650 Å and 840 Å |
title_fullStr | Vibrational Branching Ratios and Asymmetry Parameters in the Photoionization of CO(2) in the Region Between 650 Å and 840 Å |
title_full_unstemmed | Vibrational Branching Ratios and Asymmetry Parameters in the Photoionization of CO(2) in the Region Between 650 Å and 840 Å |
title_short | Vibrational Branching Ratios and Asymmetry Parameters in the Photoionization of CO(2) in the Region Between 650 Å and 840 Å |
title_sort | vibrational branching ratios and asymmetry parameters in the photoionization of co(2) in the region between 650 å and 840 å |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4862820/ https://www.ncbi.nlm.nih.gov/pubmed/27500048 http://dx.doi.org/10.6028/jres.106.038 |
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