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MO: Molekülphysik

MO 8: Posters Thursday: Dissociation and other Collision Processes

MO 8.3: Poster

Donnerstag, 5. April 2001, 12:30–15:00, AT3

Dissociation Dynamics of H₂⁺ in Intense Laser Fields — •Frank Rebentrost — Max-Planck-Institut für Quantenoptik, 85748 Garching

We report a theoretical investigation of the photodissociation of H₂⁺  by ultrashort intense laser pulses. The conditions were chosen as in the recent experiment at MPQ in which fs-pulses with peak powers ∼ 10¹⁴ W/cm² were employed [1]. Our wave-packet calculations give a clear picture of the relative contributions of single vibronic levels. The special behaviour of the n=12 level is confirmed showing trapping in the adiabatic light-induced molecular potential. One- and two-photon processes are distinguished in the final kinetic-energy release. Based on these results a simulation of the experimental projected momentum distributions is presented.

[1] K. Sändig, H. Figger and T. W. Hänsch, Phys. Rev. Lett. 85, 4876 (2000).