Spectroscopy of M⁺·Rg and transport coefficients of M⁺in Rg (M = Rb–Fr; Rg = He–Rn)

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.…”

Uniform Moment Theory for Charged Particle Motion in Gases

“…Since the same collision frequency arises in both Equations (29) and (30), we can solve these equations for the effective temperature at steady state by eliminating ξ(T eff ). This gives…”

“…As an illustration, Figure 1 shows two sets of calculated values for the mobilities of Cs + and I − ions in He at 300 K. The solid curves were calculated with a precision of 0.1 % from ab initio potentials [26,29,30]; if the potentials are as accurate as expected, the calculated mobilities have an accuracy of Figure 1. Reduced mobility, K 0 in cm 2 /Vs, as a function of the reduced field strength, E N in Td, for Cs + ions (blue, upper curves) and I -ions (red, lower curves) in He at 300 K. All values were calculated from the ab initio potentials [29,30]. The solid curves are expected to differ by no more than 0.1 % from the experimental values, while the dashed curves represent values calculated using the present first-approximation to the two-temperature moment equations 0.1 %.…”

“…in cm 2 /Vs, of Cs + ions in Ar (blue, generally higher curve) and I -ions in Ar (red, generally lower curve), as a function of the gas temperature, T in K. All values were calculated from the ab initio potentials [29,30]. The polarization limit is the value of K ð0Þ 0 that should be reached at 0 K; the limits for these systems are nearly identical because the ion-Ar reduced masses are very similar For more general ion-neutral interactions, where ξ(T eff ) is not constant, we must add to the three differential equations above another equation obtained by setting the right-hand side of Equation (28) to zero.…”

A Surprisingly Simple Electrostatic Model Explains Bent Versus Linear Structures in M+-RG2Species (M = Group 1 Metal, Li–Fr; RG = Rare Gas, He–Rn)

“…In previous work, we have extended the work in ref. 4 and studied a number of these complexes ourselves including both alkali 5,6 and alkaline earth metals. 7,8,9 It was shown for Group 1 complexes that interactions remain purely physical in nature, a fact reflected in their relatively low binding energies.…”