Abundance of Na cluster ions ejected from a liquid metal ion source

Coexistence of electronic and atomic shells in microclusters

“…While our Fig. Thus, the present reinterpretation of data supporting coexistence instead of segregation of electronic and atomic shells indeed makes [1] and [2][3][4] consistent. Thus, the present reinterpretation of data supporting coexistence instead of segregation of electronic and atomic shells indeed makes [1] and [2][3][4] consistent.…”

“…which favor delocalization of the valence electrons in the alkali atoms. Thus, in [2][3][4] electronic shells and shells of atoms coexist within the same cluster-size bracket which is in contradiction to the segregation of the two kinds of shells reported in [1]. Thus, in [2][3][4] electronic shells and shells of atoms coexist within the same cluster-size bracket which is in contradiction to the segregation of the two kinds of shells reported in [1].…”

“…The existence of electronic shells and shells of atoms for alkali clusters has also been reported in [2][3][4] referring to those experimental conditions (temperature, size, etc.) which favor delocalization of the valence electrons in the alkali atoms.…”

“…There, the delocalized electrons form the electronic shells according to the jellium model [5], while the ion cores form the shells of atoms. Such a reinterpretation makes [I] and [2][3][4] consistent. The clarification of this contradiction is the subject of the present paper.…”

Atomic structure and collective excitations of medium size NanKm clusters

“…On the experimental side, N= 13 hast not been detected as particulary abundant in supersonic expansion experiments. However, Saito and coworkers reported the observation of highly stable Li + and Na + clusters produced by the Liquid Metal Ion Source technique (LMIS) [33][34][35], which they have proposed to be indicative of an icosahedral structure. Figure 4a-c give the variation of the different KohnSham one-electron energy eigenvalues as a function of cluster size for NaK u_ 1, Na, K, and Na N_ 1K.…”