Ernst.2008lbp

Johann Nagl, Gerald Auböck, Andreas W. Hauser, Olivier Allard, Carlo Callegari, Wolfgang E. Ernst. Heteronuclear and Homonuclear High-Spin Alkali Trimers on Helium Nanodroplets. Physical Review Letters, 100(6), 2008.

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Abstract

{The electronic excitation spectra of all possible homo- and heteronuclear high-spin (quartet) trimers of K and Rb (KxRb3-x, x=0…3) assembled on the surface of superfluid helium droplets, are measured in the spectral range from 10 600 to 17 400 cm-1. A regular series of corresponding bands is observed, reflecting the similar electronic structure of all these trimers. For the assignment and separation of overlapping bands, we determine x directly, with mass-selected beam depletion, and indirectly with a V-type double-resonance scheme. The assignment is confirmed by high-level ab initio calculations of the electronic structure of the bare trimers. The level structure is rationalized in terms of harmonic-oscillator states of the three valence electrons in a quantum-dot-like confining potential. We predict that three should be a magic number for high-spin alkali clusters.}

Keywords

[ Nanodroplets ] [ Spectroscopy ]

BibTex Reference

@article{Ernst.2008lbp,
   Author = {Nagl, Johann and Auböck, Gerald and Hauser, Andreas W. and Allard, Olivier and Callegari, Carlo and Ernst, Wolfgang E.},
   Title = {{Heteronuclear and Homonuclear High-Spin Alkali Trimers on Helium Nanodroplets}},
   Journal = {Physical Review Letters},
   Volume = {100},
   Number = {6},
   Year = {2008}
}

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