Towards single-particle spectroscopy of small metal clusters
We investigate the kinetic-energy spectra of electrons emitted from a metal cluster following laser excitation. This is done in the framework of a coupled ionic and electronic dynamics. Properly chosen laser parameters, leading to gentle excitations, yield kinetic-energy spectra which nicely resolve the multiphoton processes for each occupied state separately. This gives access to the single-particle energies in clusters, provided one works at sufficiently low temperatures and low electron flow.
Pohl
A
Institut fur Theoretische Physik, Universitat Erlangen, Staudtstrasse 7, D-91058 Erlangen, Germany.
Reinhard
P
Suraud
E