López Rodríguez, José ManuelAlonso, J. A. (Julio A.), 1948-March, Norman H. (Norman Henry), 1927-Garcias, FranciscaBarranco Gómez, Manuel2009-10-292009-10-2919940163-1829https://hdl.handle.net/2445/9868Using the extended Thomas-Fermi version of density-functional theory (DFT), calculations are presented for the barrier for the reaction Na20++Na20+¿Na402+. The deviation from the simple Coulomb barrier is shown to be proportional to the electron density at the bond midpoint of the supermolecule (Na20+)2. An extension of conventional quantum-chemical studies of homonuclear diatomic molecular ions is then effected to apply to the supermolecular ions of the alkali metals. This then allows the Na results to be utilized to make semiquantitative predictions of position and height of the maximum of the fusion barrier for other alkali clusters. These predictions are confirmed by means of similar DFT calculations for the K clusters.5 p.application/pdfeng(c) The American Physical Society, 1994MicroagregatsForces intermolecularsTeoria del funcional de densitatMetalls alcalinsMicroclustersIntermolecular forcesDensity functional theoryAlkali metalsinfo:eu-repo/semantics/article79385info:eu-repo/semantics/openAccess