Optical spectra and their moments for sodium clusters, Nan+, with 3 ≤ n ≤ 64
Fakultät für Physik, Universität Freiburg, H. Herderstr. 3,
D-79104 Freiburg, Germany
Revised: 15 December 1998
Published online: 15 April 1999
Photoabsorption cross-sections for all sodium cluster ions, , with , have been measured at a temperature of about 105 K. The size dependence of the peak positions and widths is discussed. Triaxial deformations are unequivocally observed. The moments of the optical response are calculated from the data and their size dependence discussed. The width of the plasmon peak is not understood.
PACS: 36.40.Gk – Plasma and collective effects in clusters / 36.40.Mr – Spectroscopy and geometrical structure of clusters
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1999