Stuttgart 2012 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 31: Interaction with strong or short laser pulses IV

A 31.2: Vortrag

Donnerstag, 15. März 2012, 11:00–11:15, V57.05

Charge selective ion energy distributions generated in the Coulomb explosion of Ag clusters — •Christian Schaal, Robert Irsig, Josef Tiggesbäumker, and Karl-Heinz Meiwes-Broer — Institut für Physik, Universität Rostock, Universitätsplatz 3, D-18051 Rostock, Germany

There are only a few number of attempts to simultaneously analyze energetic ions from clusters exposed to strong laser fields for their specific charge state and energy. Therefore the contribution of a single charge state to the whole energy distribution is not studied in detail so far. The main problem is the low transmission of ions, since small appertures have to be used. We use the method of Magnetic Deflection TOF to obtain charge state selective energy spectra. Instead of recording ion spectra at certain energies, a position and time sensitive detector is used, which allows to record the impact of all transmitted ions at all energies in each shot. This results in a strong decrease in the exposure time, making this method feasible to also study low density cluster targets. The influence of the pulse parameters on the energy distributions are discussed.