Reassigning the CaH${}^{+}$ 1${}^1\Sigma \to$ 2${}^1\Sigma$ vibronic transition with CaD${}^{+}$

Abstract

We observe vibronic transitions in CaD${}^{+}$ between the 1${}^1\Sigma$ and 2${}^1\Sigma$ electronic states by resonance enhanced multiphoton photodissociation spectroscopy in a Coulomb crystal. The vibronic transitions are compared with previous measurements on CaH${}^{+}$. The result is a revised assignment of the CaH${}^{+}$ vibronic levels and a disagreement with CASPT2 theoretical calculations by approximately 700 cm${}^{-1}$.

arXiv comment4 pages, 4 figures, comments welcome

References in corpus (8)

• Preparation and coherent manipulation of pure quantum states of a single molecular ion
• Non-destructive state detection for quantum logic spectroscopy of molecular ions
• Addressing and manipulation of individual hyperfine states in cold trapped molecular ions and application to HD^{+} frequency metrology
• Probing isotope effects in chemical reactions using single ions
• Trapped-Ion State Detection through Coherent Motion
• Incomplete rotational cooling in a 22-pole ion trap
• Observation of vibrational overtones by single molecule resonant photodissociation
• Vibronic spectroscopy of sympathetically cooled CaH${}^{+}$

Cited by in corpus (2)

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