Bonding in Ground-State and Excited-State A⁺·Rg van der Waals Ions (A = Atom, Rg = Rare-Gas Atom):  A Model-Potential Analysis

Interaction potentials and spectroscopy of Hg+∙Rg and Cd+∙Rg and transport coefficients for Hg+ and Cd+ in Rg (RgHeRn)

“…[8][9][10][11] These are all closed-shell systems that serve as prototypes of cation/rare-gas interactions, as discussed in detail by Bellert and Breckenridge. 12 Very recently, we also tackled the more demanding open-shell system of O − with the three lightest rare gases, where it was shown 13 that it was important to employ potentials which took account of the spin-orbit interaction; this arises owing to the production of 2 ⌸ and 2 ⌺ + states upon interaction of the O − with the rare gas, and the interaction between the two ⍀ =1/2 states thereafter. The cases of Hg + and Cd + interacting with a rare gas in some ways fall between the previous two situations, since each metal cationic complex is an open-shell 2 ⌺ + state ͓Hund's case ͑a͔͒, and so there is no spin-orbit interaction to first order ͑and the excited states are far enough away that any higher-order effects are small͒.…”

“…There are data available 12 for Hg + · Rg for Rgv Ne, Ar, Kr, and Xe, whereas for Cd + · Rg, only the Rgv Ar system has been studied much previously. Consequently, the calculation of interatomic potentials for all 12 systems ͑Hg + ·Rg and Cd + ·Rg͒ will provide a large amount of information on these systems for the first time.…”

Spectroscopy of K+⋅Rg and transport coefficients of K+ in Rg (Rg=He–Rn)

“…We note that Bellert and Breckenridge 7 have recently provided a thorough survey of the information available on the interactions that occur between metal atomic cations and rare gas atoms.…”

Single Ion Trapping for the Enriched Xenon Observatory

“…Bellert et al [46] discuss the interaction potential between atoms and noble gases in detail. In this section, we present a simplified discussion sufficient to introduce collisional broadening.…”

“…where α g is the polarizability of the background gas, r is the distance between the two atoms, and i indexes the electronic state of the Ba-II ion [46,47] To estimate the effect of the frequency chirp, consider the phase change during a collision with constant velocity, v, closest approach, R 0 , and ignore any changes in trajectory. Then for the potential of Eq.…”