Sa. Blundell et C. Guet, IONIC STRUCTURE EFFECTS ON THE OPTICAL-RESPONSE OF LITHIUM CLUSTERS, Zeitschrift fur Physik. D, Atoms, molecules and clusters, 28(1), 1993, pp. 81-85
Abstract. The optical response of alkali metal clusters is shown to be
sensitive to a proper treatment of the electron-ion interaction and t
o the ionic spatial structure. A spherical symmetry model based on a c
ombination of a geometrical optimization of the ionic structure and th
e random phase approximation (RPA) with exact exchange is applied to c
alculate the optical response of Li139+. The optical response obtained
within this model is in good agreement with the measured giant dipole
resonance.