Accurate diatomics-in-molecules calculations on Ar+n clusters

Abstract
The diatomics-in-molecules approach has been applied to calculate the most stable structures of singly ionized argon clusters (Ar n +, n =3–27). For the first time, highly accurate diatomic input potentials have been employed in such a calculation. As a consequence we obtain by far the most accurate results for the thermal equilibrium structures of Ar n + at 0K to date.