Dresden 2011 – scientific programme
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A: Fachverband Atomphysik
A 26: Poster III
A 26.29: Poster
Thursday, March 17, 2011, 16:00–18:30, P2
Strong-field ionization dynamics of rare-gas-doped helium nanodroplets — •Marcel Mudrich1, Siva Krishnan2, Lutz Fechner1, Frank Stienkemeier1, Robert Moshammer2, and Joachim Ullrich2 — 1Physikalisches Institut, Universität Freiburg — 2Max-Planck-Institut für Kernphysik, Heidelberg
The strong-field ionization dynamics of rare-gas-doped helium nanodroplets is studied using few-cycle femtosecond laser pulses. In accordance with recent theoretical predictions [1], efficient double-ionization of the helium atoms in the droplets is observed when doping the droplets with only a few heavy rare-gas atoms. Pump-probe measurements with identical few-cycle pulses reveal the resonantly enhanced formation of singly and doubly ionized helium atoms at delay times in the range 200-600fs. Both pump-probe transients as well as ion spectra are most sensitive to variations of the droplet size.
[1] A. Mikaberidze, U. Saalmann, and J. M. Rost, Phys. Rev. Lett. 102, 128102 (2009)