Non-adiabatic decay of Rydberg-atom-ion molecules

Abstract

The decay of Rydberg-atom-ion molecules (RAIMs) due to non-adiabatic couplings between electronic potential energy surfaces is investigated. We employ the Born-Huang representation and perform numerical simulations using a Crank-Nicolson algorithm. The non-adiabatic lifetimes of rubidium RAIMs for the lowest ten vibrational states, $\nu$, are computed for selected Rydberg principal quantum numbers, $n$. The non-adiabatic lifetimes are found to generally exceed the radiative Rydberg-atom lifetimes. We observe and explain a trend of the lifetimes as a function of $\nu$ and $n$, and attribute irregularities to quantum interference arising from a shallow potential well in an inner potential surface. Our results will be useful for future spectroscopic studies of RAIMs.

arXiv comment7 pages, 3 figures, 1 table

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• Spatial imaging of a novel type of molecular ions
• Observation of vibrational dynamics of orientated Rydberg-atom-ion molecules
• Vibronic interactions in trilobite and butterfly Rydberg molecules
• Non-adiabatic interaction effects in the spectra of ultralong-range Rydberg molecules
• Charged ultralong-range Rydberg trimers
• Nonadiabatic decay of metastable states on coupled linear potentials