Time-dependent laser-induced molecular formation from repulsive surfaces

✍ Scribed by Theodoros Mercouris; Ioannis D. Petsalakis; Cleanthes A. Nicolaides

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 523 KB
• Volume: 208
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(93)89061-l

✦ Synopsis

We have computed time-dependent probabilities of formation of the HeH* bound excited states, at their equilibrium distance of about R,, = 1.5 au, upon realistic femtosecond laser excitation during the slow collision of He with H on the ground repulsive surface. The computation involved the time integration of ten states, represented by configuration interaction wavefunctions and coupled through the full Hamiltonian. The effect of radiative and radiationless damping was incorporated in terms of complex energies computed from first principles. We tind that the excitation rate goes through a maximum as a function of the field strength Experiments on this or on similar molecular formation problems seem possible, provided efficient techniques for preparing the initial state are applied.