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A: Atomphysik
A 20: Poster II: Atomare Systeme in starken Laserpulsen und statischen Feldern
A 20.9: Poster
Donnerstag, 16. März 2006, 16:30–18:30, Labsaal
Simultaneous real-time tracking of wave packets evolving on two different potential curves in H2+ and D2+ — •B. Ulrich1,2, A. S. Alnaser2, X. M. Tong2, I. V. Litvinyuk2, C. M. Maharjan2, P. Ranitovic2, T. Osipov2, R. Ali2, S. Ghimire2, Z. Chang2, C. D. Lin2, and C. L. Cocke2 — 1Institut für Kernphysik, Johann Wolfgang Goethe Universtät, Max-von-Laue Str.1, 60438 Frankfurt — 2J.R.Macdonald Laboratory, Physics Department, Kansas State University, Manhattan, Kansas 66506-2601, USA
In a pump probe experiment with intense few-cycle laser pulses we have measured the simultaneous evolution of wave packets on two different potential curves created when H2 (D2) molecules were ionized. Measuring in coincidence the kinetic energy of the proton (deuteron) pairs produced in the Coulomb explosion of the H2+ (D2+) molecular ions as a function of time delay between the pump and probe pulse allowed us to take experimental "snapshots". The time evolution was sufficient to reveal not only the evolution of the wave paket centroid but also the fundamentally wavelike features of the packets. The observed features of the nuclear motion are in good agreement with full quantum calculation.