Optical excitation of collision pairs in crossed beams: Determination of the NaKr B2Σ potential
Institut für Atom- und Molekülphysik, Universität Hannover,
30167 Hannover, Germany
2 Max-Planck-Institut für Quantenoptik - 85748 Garching, Germany
Accepted: 16 June 1997
New experimental results for the optical collision process are presented, which were obtained in a crossed-beam experiment with differential detection. The oscillatory structure in the differential cross-sections caused by Stueckelberg interferences is investigated in detail for relative velocities between 450 and 1500 m/s and for laser detunings from 80 to on the blue-wing side of the Na resonance lines. The data are used to determine the potential of the excited repulsive state of NaKr with an estimated accuracy of (3 meV).
PACS: 34.20.-b – Interatomic and intermolecular potentials and forces, potential energy surfaces for collisions / 34.30.+h – Intramolecular energy transfer; intramolecular dynamics; dynamics of van der Waals molecules / 34.50.Rk – Laser-modified scattering and reactions
© EDP Sciences, 1997