Hamburg 2009 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 13: Molekülphysik Poster 1

MO 13.23: Poster

Dienstag, 3. März 2009, 16:30–19:00, VMP 8 Foyer

Nonadiabatic Quantum Dynamics and Laser Control in of Br₂ in Solid Argon — •Oliver Kühn¹, Antonio Accardi², and Alexander Borowski² — ¹Institut für Physik, Universität Rostock — ²Institut für Chemie und Biochemie, Freie Universität Berlin

In this presentation the focus will be on some general issues concerning the treatment of laser driven nonadiabatic multidimensional quantum dynamics of complex systems. As a specific example Br₂ occupying a double substitutional site in solid Ar is discussed [1]. It is shown how the complexity can systematically be reduced by introducing a Cartesian Reaction Surface Vibronic Coupling model [2,3]. The latter is suited for a quantum dynamics study employing the multiconfiguration time-dependent Hartree approach [4]. In the analysis special emphasis is payed to the role of conical intersections which are responsible for the B to C predissociation. Finally, active control of the nonadiabatic dynamics using shaped laser pulses is demonstrated [5].

[1] M. Bargheer et al., in O. Kühn, L. Wöste (eds.) "Analysis and Control of Ultrafast Photoinduced Reactions", Springer, Heidelberg, 2007, p. 257. [2] A. Borowski, O. Kühn, Theor. Chem. Acc. 117, 521 (2007). [3] A. Borowski, O. Kühn, J. Photochem. Photobiol. A, 190, 169 (2007). [4] A. Borowski, O. Kühn, Chem. Phys. 347, 523 (2008). [5] A. Accardi, A. Borowski, O. Kühn, in preparation.