High-resolution spectroscopy of the transition of MgAr⁺ by isolated-core multiphoton Rydberg dissociation

Génévriez, Matthieu;Wehrli, D.;Merkt, F.
(2019) Molecular Physics : an international journal at the interface between chemistry and physics — Vol. 118, n° 11, p. e1703051 (2019)

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Authors
  • Génévriez, Matthieuorcid-logoUCLouvain
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  • Wehrli, D.Laboratory of Physical Chemistry, ETH Zurich, Zurich, Switzerland
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  • Merkt, F.Laboratory of Physical Chemistry, ETH Zurich, Zurich, Switzerland
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Abstract
(en) We report on a new measurement of the A+ 2ΠΩ′=1/2,3/2←X+ 2Σ+ electronic transition of MgAr+. The experiment relied on the resonance-enhanced multiphoton dissociation of the isolated ionic core of Rydberg MgAr molecules. The dissociation mechanism leading to the production of Mg atoms in high Rydberg states was used to separate the dissociation signal from the background and record background-free spectra. The rotational structure of the measured vibrational bands was partially resolved, and values of the rotational constants and band origins were extracted from the spectra.
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Génévriez, M., Wehrli, D., & Merkt, F. (2019). High-resolution spectroscopy of the transition of MgAr⁺ by isolated-core multiphoton Rydberg dissociation. Molecular Physics : an international journal at the interface between chemistry and physics, 118(11), e1703051. https://doi.org/10.1080/00268976.2019.1703051 (Original work published 2019)