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MO: Fachverband Molekülphysik

MO 23: Molekülphysik Poster 2

MO 23.7: Poster

Thursday, March 5, 2009, 16:30–19:00, VMP 8 Foyer

Fusion and scattering mechanism in C₆₀-C₆₀ collisions — •Jan Handt and Rüdiger Schmidt — Institut für Theoretische Physik, Technische Universität Dresden, D-01062 Dresden

We present a theoretical study of C₆₀-C₆₀ collisions without and with electronic excitation (by a laser) in the impact energy up to 150eV (center of mass frame). As is well known, fusion and inelastic scattering occur in this energy range. Fusion events are more favoured in the higher energy regime whereas scattering in the lower one. Our molecular dynamics calculations show that the individual event depends strongly on the initial orientation of the collision partners. On the other hand analyzing the vibrational dynamics similarities can be found in the collision dynamics for all kinds of events. A coupled spring model is presented which allows us to determine analytically the fusion threshold and its dependence on the vibrational constants. The model results agree well with the molecular dynamics simulations.