Description
We report on the use of isolated XUV attosecond and 7fs IR pulses to control electron localization during an ultrafast H2+ dissociation process. First, a broadband part of the XUV spectrum, centered at 43 eV, coherently excites at least four H2+ electronic states that dissociate into the n=2 limit. Second, the IR pulse is used to control the localization of the electronic wave function in the left/right and up/down directions. The experiment was done in the COLTRIMS geometry where full 3D momenta of the dissociation products (i.e. electrons and ions) were taken in coincidence. Typical experiments of this kind had been done in the hydrogen molecule, where only two electronic states were mixed in order to control the electron localization (i.e. Sansone et. al. Nature 465, (2010)). We show that the localization is still possible to control by increasing the number of electronic states involved. Moreover, the IR pulse mixes the states with different molecular orbital distributions, which adds another degree of complexity in the angular distribution of the localized electron wave function. Our results would be discussed with the complementary theoretical calculations.
