Fine Structure of Mass Spectrum of Sodium Clusters: Giant-Atom Concept

摘要: We propose a giant-atom cluster model for sodium clusters, which explains the fine structure of mass spectra that is, non-shell-closing magic numbers. The concept is another aspect shell alkali-metal clusters. A typical example giant atom Na2, can be regarded as rare-gas because it has shell-closing electronic structure, (Is)2, in model. An icosahedron this atom, (Na2)13, expected to stable and corresponds well number, 26, spectrum Another Na19, spherical core one s-electron, dimer (Na12)2 peak at 38. Some other examples are also enumerated found coincide This fact supports reaction clusters analogous ordinary atoms, since adiabatic expansion gas rules relative abundances