Accession Number:
ADA045041
Title:
Radiative Transitions for Molecular Collisions in an Intense Laser Field,
Descriptive Note:
Corporate Author:
ROCHESTER UNIV N Y DEPT OF CHEMISTRY
Personal Author(s):
Report Date:
1976-04-21
Pagination or Media Count:
12.0
Abstract:
Quantum mechanical and semiclassical approaches are discussed for the study of molecular collisions in an intense laser field. Both a coherent state and Fock state representation of the photon field are investigated. The collision dynamics is described in terms of transitions between two electronic-field potential energy surfaces, where each surface depends on the field-free adiabatic surfaces and electric dipole transition matrix elements as functions of nuclear coordinates. The electronic-field surfaces exhibit avoided crossings on the real axis due to the radiative coupling at the resonance nuclear configurations, and other parts of these surfaces are similar to the field-free adiabatic surfaces with one of them shifted by h bar omega for single photon processes. Metastable states, formed at some collision energies, are conjectured to occur in the field, although absent from the field free case. From a spectroscopic point of view, changes in energy spectra are expected from those of the individual collision-free species. Numerical results are presented for the collinear collision process Br2P32 H2v 0 h bar omega Br2P12 H2v 0. Author
Descriptors:
Subject Categories:
- Lasers and Masers
- Nuclear Physics and Elementary Particle Physics
- Plasma Physics and Magnetohydrodynamics