Hannover 2013 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 9: Atomic clusters I (with A)
MO 9.2: Vortrag
Montag, 18. März 2013, 17:00–17:15, B 302
Angular resolved photoionization study of C60 in ultrashort (4 fs) and short (40 fs) laser pulses — •S. Skruszewicz1, H. Li2, S. Zherebtsov3, R. Irsig1, F. Süßmann3, Th. Fennel1, J. Tiggesbäumker1, M. F. Kling2,3, and K.-H. Meiwes-Broer1 — 1Institut für Physik, Universitätsplatz 3, 18051 Rostock, Germany — 2J.R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS 66506, USA — 3Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, 85748 Garching, Germany
Recently, the existence of Superatom Molecular Orbitals (SAMO) bound to the core of the hollow C60 cage has been reported [1,2]. Few-cycle as well as two-color pulses (w/2w) [3] are applied to study angule-resolved photoelectron emission from C60 in order to characterize SAMO in more details. As tool we utilize Velocity Map Imaging spectrometer to map angular dependence in the photoelectron emission. Multiple nodal structures appear in the angular signal distribution as we excite C60 with few-cycle laser pulses. At pulse durations of 40 fs, one observes distinct changes in the photoelectron angular distribution. We also made attempt to compare the CEP dependence on the electron emission to the result obtained with w/2w pulses of 40 fs.
[1] M. Feng et.al., Science 320, 359 (2008)
[2] O. Johansson et.al., Phys. Rev. Lett. 108 173401 (2012)
[3] N. Dudovich et. al., Nature 2, 781 (2006)