ATOMIC AND MOLECULAR IMPURITIES IN HE-4 CLUSTERS

A density functional theory is used to predict the binding energy of a tomic and molecular impurities (Ne, Ar, Kr, Xe, Li, Na, K, Rb, Cs, and SF6) in the center of He-4 clusters, in the limit of zero temperature and for zero angular momentum states. The size dependence of the bind ing energy, from small clusters to the bulk liquid limit, is investiga ted. The behaviour of the He-4 density near the impurity is also studi ed.