Nonradiative Electronic Deexcitation Time Scales in Metal Clusters

Details Nonradiative Electronic Deexcitation Time Scales in Metal Clusters Nonradiative Electronic Deexcitation Time Scales in Metal Clusters

1998-01-06

arxiv.org/abs/physics/9801002v1

Physics

Atomic and Molecular Clusters

11 pages, 4 figures. Accepted for publication in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.57.4895

The life-times due to Auger-electron emission for a hole on a deep electronic shell of neutral and charged sodium clusters are studied for different sizes. We consider spherical clusters and calculate the Auger-transition probabilities using the energy levels and wave functions calculated in the Local-Density-Approximation (LDA). We obtain that Auger emission processes are energetically not allowed for neutral and positively charged sodium clusters. In general, the Auger probabilities in small Na$_N^-$ clusters are remarkably different from the atomic ones and exhibit a rich size dependence. The Auger decay times of most of the cluster sizes studied are orders of magnitude larger than in atoms and might be comparable with typical fragmentation times.

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