PLASMON PROFILES AND SHAPES OF SODIUM CLUSTER IONS

被引：17

作者：

PEDERSEN, J

BORGGREEN, J

CHOWDHURY, P

KEBAILI, N

LUNDSBERGNIELSEN, L

LUTZENKIRCHEN, K

NIELSEN, MB

RASMUSSEN, HD

机构：

[1] The Niels Bohr Institute, University of Copenhagen, Roskilde

来源：

ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS | 1993年 / 26卷 / 1-4期

关键词：

D O I：

10.1007/BF01429169

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Photo-absorption cross-sections for charged sodium clusters (14 to 48 atoms) have been measured for photon energies from 2.0 eV to 3-5 eV. The spectra are dominated by surface plasma oscillations of the valence electrons exhausting 70-100% of the dipole sum rule. The mean resonance energy of congruent-to 2.75 eV is nearly independent of cluster size. A splitting of the resonance peaks is observed for non-''magic'' clusters and discussed in terms of a deformation picture involving prolate and oblate shapes.

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页码：281 / 283

页数：3

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