Observation of a new electronic state of CO perturbing W{sup 1}Π(υ=1)
- Observatoire de Paris, LERMA and UMR 8112 du CNRS, 5 place Jules Janssen, 92195 Meudon (France)
- Department of Physics, Wellesley College, Wellesley, Massachusetts 02481 (United States)
- Department of Physics and Astronomy, University of Toledo, Toledo, Ohio 43606 (United States)
- Research School of Physics and Engineering, The Australian National University, ACT 0200 Canberra (Australia)
- School of Earth and Space Exploration, Arizona State University, 781 S. Terrace Rd, Tempe, Arizona 85281 (United States)
- Synchrotron SOLEIL, Orme de Merisiers, St. Aubin, BP 48, 91192 Gif sur Yvette Cedex (France)
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 υ = 0 level of a previously unobserved {sup 1}Π state predicted by ab initio calculations to occur with the correct symmetry and equilibrium internuclear distance. We label this new state E{sup ″} {sup 1}Π. Both of the interacting levels W(1) and E{sup ″}(0) are predissociated, leading to dramatic interference effects in their corresponding linewidths.
- OSTI ID:
- 22436582
- Journal Information:
- Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 14 Vol. 141; ISSN JCPSA6; ISSN 0021-9606
- Country of Publication:
- United States
- Language:
- English
Similar Records
Study of Υ(10753) decays to π+π−Υ(nS) final states at Belle II
Isotopic dependence of the predissociations of the E{sup 1}Π state of CO