Atomic, Molecular, and Optical Physics Seminar
Grid Methods for Cold Molecules: Determination of Photoassociation Lineshapes and Rate Constants
Laboratoire Aime Cotton, Orsay, France, and
The Fritz Haber Research Center
The Hebrew University of Jerusalem, Israel
A description of photoassociation by CW laser is formulated in the framework of grid methods. The Hamiltonian describing one or several bound states coupled to a continuum via a radiative field is written in energy representation and diagonalized. The generality of the treatment allows to compute accurately and efficiently physical properties such as non-linear high-intensity energy shifts, line shapes, and PA rates both for isolated and unisolated resonances. Application is given to sodium photoassociation in the experimental conditions of Mc Kenzie, et al [Phys. Rev. Lett. 88, 090403 (2002)]. Comparison with the model of Bohn and Julienne [Phys. Rev. A 60, 414 (1999)] is discussed.
Work done in collaboration with R. Kosloff and F. Masnou-Seeuws.
Monday, September 25, 2006
Gant Science Complex