Lithium ions solvated in helium

Abstract

We report on a combined experimental and theoretical study of Li${}^{+}$ ions solvated by up to 50 He atoms. The experiments show clear enhanced abundances associated with He${}_n$Li${}^{+}$ clusters where $n=2$, 6, 8, and 14. We find that classical methods, e.g.\ Basin-Hopping (BH), give results that qualitatively agree with quantum mechanical methods such as path integral Monte Carlo, diffusion Monte Carlo and quantum free energy, regarding both energies and the solvation structures that are formed. The theory identifies particularly stable structures for $n=4$, 6 and 8 which line up with some of the most abundant features in the experiments.

arXiv comment8 pages, 7 figures, published in Physical Chemistry Chemical Physics

References in corpus (5)

• Global Optimization by Basin-Hopping and the Lowest Energy Structures of Lennard-Jones Clusters Containing up to 110 Atoms
• Spectroscopy and dynamics in helium nanodroplets
• Cold Physics and Chemistry: Collisions, Ionization and Reactions inside Helium Nanodroplets Close to Zero K
• Structural Transitions and Global Minima of Sodium Chloride Clusters
• Alkali-helium snowball complexes formed on helium nanodroplets

Cited by in corpus (1)

• Mixed cationic clusters of nitrogen and hydrogen