Journal article
Theory for the short-time response of small HG-N clusters after excitation



Publication Details
Authors:
Klaus, W.; Garcia, M.; Bennemann, K.
Publisher:
SPRINGER VERLAG
Publication year:
1995
Journal:
Zeitschrift für Physik D Atoms, Molecules and Clusters
Pages range:
43-49
Journal acronym:
Z. Phys. D
Volume number:
35
Start page:
43
End page:
49
Number of pages:
7
ISSN:
0178-7683
eISSN:
1431-5866

Abstract
The short-time behavior of small Hg-n clusters immediately after single or double ionization is studied. We calculate self-consistently the ground state electronic energy E of ionized Hg-n clusters. Upon ionization changes of the potential energy surface (PES) occur, which govern the atomic motion in the cluster. These changes depend on cluster size and charge and are determined by the interplay between the localization of the holes within an ionic core and the polarization energy of the neutral rest of the cluster. In the case of single ionization of the cluster the PES results mainly from hole delocalization. In contrast, in the case of double ionization the PES is governed almost only by strong environment polarization. We use our theory to explain the physical origin of the oscillations in the ionization cross-section of singly and doubly excited Hg-n clusters observed in recent pump-probe experiments.


Authors/Editors

Last updated on 2019-25-07 at 16:02