"Reassigning CaH+ Vibronic Transitions with CaD+" Posted to arXiv

Simplified level diagram showing the CaD+ transitions addressed in this work.

We observe vibronic transitions in CaD+ between the ground singlet 1Σ and singlet 2Σ electronic states by resonance enhanced multiphoton photodissociation (REMPD) 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 wavenumbers.

The full paper is available on the arXiv.