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SYIF: Intense field interaction with molecules and clusters

SYIF 1: Intense field interaction with molecules and clusters 1

SYIF 1.5: Hauptvortrag

Freitag, 17. März 2006, 15:32–16:00, HV

Atomic clusters in strong laser pulses: Energy spectra of emitted ions and electrons — •Ulf Saalmann — Max-Planck-Institut fuer Physik komplexer Systeme, Noethnitzer Str. 38 01187 Dresden

Being prototypes of atomic many-particle systems, the response of clusters to strong laser fields has been intensively investigated for the last decade. In particular the advent of femtosecond laser pulses allowed for time-resolved studies by using variable pulse lengths or pump-probe techniques.

Here, microscopic calculations based on a mixed quantum-classical description of the laser-cluster interaction are presented. They provide, along with the measurements, valuable insight into the complex many-particle dynamics and explain the very effective absorption mechanisms as well as how this renders measured energy spectra of ions, electrons or photons emitted by the cluster. Differences in the laser-induced dynamics for high-frequency pulses (as available from novel FEL machines) are discussed briefly.