Theoretical Studies of Laser-Induced Molecular Rate Processes: Topics in Line Broadening and Spectroscopy.
Abstract
Theoretical studies of molecular rate processes were carried out, with an emphasis on how such processes can be induced or affected by external laser radiation. The processes were classified into two types: Gas-Phase Porcesses and Surface Processes. Within the first type a variety of laser-assisted collisional processes were investigated, including chemical reactions in a laser field, laser-induced resonance scattering with applications to transition-state spectroscopy and line broadening in general, laser-induced curve switching, isotope separation by selective radiative scattering and laser-induced associative ionization. Several related problems not necessarily involving a laser field were investigated, such as fine-structure transitions in alkali-noble-gas collisions and nonlocal potentials in bound-continuum problems. In regard to the second-type of processes, the following dynamical processes were considered: electron transfer in positive-ion-surface collisions, where one-electron transfer leads to ion neutralization and two-electron transfer leads to negative-ion formation (the latter necessitates the inclusion of the Anderson correlation energy); surface-state excitation and laser-enhanced ion-semiconductor electron transfer; laser-induced electron-phonon processes on metal surfaces; formation of electron-hole pairs in a semiconductor by vibrationally-excited molecules; vibrational (both energy and phase) relaxation of a laser-excited adspecies; and laser-induced migration. Spectroscopic processes included resonance fluorescence of atoms near a metal surface and Stark quantum beats from beam-foil excited hydrogen atoms.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1985
- Accession Number
- ADA161132
Entities
People
- Thomas F. George
Organizations
- University of Rochester