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A STUDY OF VIBRONIC COUPLING IN THE [MATH] STATE OF CO+2

Abstract : We have studied vibronic coupling in vibrationally resolved photoionization to the [MATH] (2∑g+) state of CO2+ in the photon-energy range hν=20-28.5 eV. The measurements utilize high-resolution hemispherical electron analyzers, equipped with area detectors, and the SURF-II synchrotron radiation source at the National Bureau of Standards. The angular distribution asymmetry-parameters (β) for the allowed [MATH](0,0,0) and forbidden [MATH](1,0,1) (19.747 eV binding energy) peaks are found to be quite different. However, similarities between the [MATH](1,0,1) β curve and that for the [MATH] state suggest that vibronic coupling to the [MATH] (2∑u+) state of CO2+ is the explanation for the intensity of the [MATH] state forbidden band in the first 8 eV above threshold.
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https://hal.archives-ouvertes.fr/jpa-00227243
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Submitted on : Thursday, January 1, 1987 - 8:00:00 AM
Last modification on : Wednesday, September 15, 2021 - 2:56:02 PM
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Pascal Roy, T. Ferrett, V. Schmidt, A. Parr, S. Southworth, et al.. A STUDY OF VIBRONIC COUPLING IN THE [MATH] STATE OF CO+2. Journal de Physique Colloques, 1987, 48 (C9), pp.C9-765-C9-768. ⟨10.1051/jphyscol:19879133⟩. ⟨jpa-00227243⟩

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