Stuttgart 2012 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 14: Interaction with VUV and X-ray light II
A 14.4: Vortrag
Dienstag, 13. März 2012, 11:15–11:30, V57.05
Seeded Multi-electron Ionization of Xenon Doped Helium Droplets — •Michael Kelbg1, Sebastian Göde1, Truong Nguyen Xuan2, Josef Tiggesbäumker1, and Karl-Heinz Meiwes-Broer1 — 1Universität Rostock, Institut für Physik, Universitätsplatz 3, Rostock, Germany — 2Max-Born Institute, Max-Born-Strasse 2A, 12489 Berlin, Germany
Ionization process of minimally Xenon-doped helium nanodroplets is studied using ultrashort shaped laser pulses. With the technique of colored double pulse fitness landscape the dependencies on delay and energy distribution of the double pulse is systematically determined. As a result the transparent helium droplet turns into a strong absorber of infrared light and is avalanche-like ionized in a two step process due to the initially charged xenon core followed by resonant absorption of the second pulse. Furthermore dependencies on the amount of xenon doping and resonance conditions for xenon charge states are discussed.