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

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

Subject Categories:

  • Lasers and Masers
  • Nuclear Physics and Elementary Particle Physics
  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE