Observation of a new electronic state of CO perturbing W1Π (v=1)

A. N. Heays, M. Eidelsberg, G. Stark, J. L. Lemaire, L. Gavilan, S. R. Federman, B. R. Lewis, James Lyons, N. De Oliveira, D. Joyeux

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We observe photoabsorption of the W(1) ← X(0) band in five carbon monoxide isotopologues with a vacuum-ultraviolet Fourier-transform spectrometer and a synchrotron radiation source. We deduce transition energies, integrated cross sections, and natural linewidths of the observed rotational transitions and find a perturbation affecting these. Following a deperturbation analysis of all five isotopologues, the perturbing state is assigned to the v = 0 level of a previously unobserved 1Π state predicted by ab initio calculations to occur with the correct symmetry and equilibrium internuclear distance. We label this new state E 1Π. Both of the interacting levels W(1) and E(0) are predissociated, leading to dramatic interference effects in their corresponding linewidths.

Original languageEnglish (US)
Article number144311
JournalJournal of Chemical Physics
Volume141
Issue number14
DOIs
StatePublished - Jan 1 2014

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Electronic states
Carbon Monoxide
Linewidth
photoabsorption
Synchrotron radiation
radiation sources
electronics
carbon monoxide
Spectrometers
Labels
Fourier transforms
synchrotron radiation
Vacuum
spectrometers
interference
perturbation
vacuum
cross sections
symmetry
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Heays, A. N., Eidelsberg, M., Stark, G., Lemaire, J. L., Gavilan, L., Federman, S. R., ... Joyeux, D. (2014). Observation of a new electronic state of CO perturbing W1Π (v=1). Journal of Chemical Physics, 141(14), [144311]. https://doi.org/10.1063/1.4897326

Observation of a new electronic state of CO perturbing W1Π (v=1). / Heays, A. N.; Eidelsberg, M.; Stark, G.; Lemaire, J. L.; Gavilan, L.; Federman, S. R.; Lewis, B. R.; Lyons, James; De Oliveira, N.; Joyeux, D.

In: Journal of Chemical Physics, Vol. 141, No. 14, 144311, 01.01.2014.

Research output: Contribution to journalArticle

Heays, AN, Eidelsberg, M, Stark, G, Lemaire, JL, Gavilan, L, Federman, SR, Lewis, BR, Lyons, J, De Oliveira, N & Joyeux, D 2014, 'Observation of a new electronic state of CO perturbing W1Π (v=1)', Journal of Chemical Physics, vol. 141, no. 14, 144311. https://doi.org/10.1063/1.4897326
Heays AN, Eidelsberg M, Stark G, Lemaire JL, Gavilan L, Federman SR et al. Observation of a new electronic state of CO perturbing W1Π (v=1). Journal of Chemical Physics. 2014 Jan 1;141(14). 144311. https://doi.org/10.1063/1.4897326
Heays, A. N. ; Eidelsberg, M. ; Stark, G. ; Lemaire, J. L. ; Gavilan, L. ; Federman, S. R. ; Lewis, B. R. ; Lyons, James ; De Oliveira, N. ; Joyeux, D. / Observation of a new electronic state of CO perturbing W1Π (v=1). In: Journal of Chemical Physics. 2014 ; Vol. 141, No. 14.
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