Dresden 2011 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 12: Femtosecond Spectroscopy III
MO 12.6: Vortrag
Mittwoch, 16. März 2011, 11:45–12:00, TOE 317
Steering the electron motion in H2+ by nuclear wave packet dynamics — •Bettina Fischer, Manuel Kremer, Thomas Pfeifer, Bernold Feuerstein, Vandana Sharma, Nicolas Camus, Robert Moshammer, and Joachim Ullrich — Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg
By combining carrier-envelope phase stabilization of ultrashort (6fs) laser pulses with optical pump-probe spectroscopy the ‘left/right’ asymmetry of H+ emission in dissociating H2+ molecular ions is investigated. Both, the localization and localizability of the bound electron at one or the other proton strongly depend on the time delay between the two CEP stable laser pulses revealing specific temporal signatures for different fragment kinetic energies. This delay dependence allows us to gain insight into the underlying physical mechanisms for electron localization. Two distinct sets of interfering dissociation channels can be identified by the specific temporal structure of the resulting asymmetry in the proton emission.