High-Resolution Spectroscopy and Dynamics of Multiphoton Processes in Atoms and Molecules.
Abstract
This report summarizes research on resonantly enhanced multiphoton absorption dissociation, and ionization processes in atoms and molecules. Multiphoton processes are studied using from one to three independently tunable visible and/or UV laser beams in order to establish both the underlying physics and the high degree of selectivity of multiphoton processes. Measurements are made to probe both the formation of excited molecular states and the subsequent behavior of excited states either in the presence or in the abscence of further intense laser radiation. Detection methods include laser-induced fluorescence, ion mass analysis, and electron energy analysis. During the current reporting period, we have studied resonant multiphoton ionization processes for the molecules N2, CO, O2, NO, NeXe, ArXe, KrXe, and Xe2 and for the atoms C, I, and S using both mass spectrometry and photoelectron spectroscopy to analyze the products of the ionizations. In addition, we are developing three new instruments that will provide significantly enhanced resolution, collection efficiency, and versatility in both the ion mass and the electron kinetic energy detection channels. Keywords include: double resonance spectroscopy, electron spectroscopy, molecular beams, rydberg states; photoelectron angular, distributions. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 13, 1985
- Accession Number
- ADA155862
Entities
People
- J. L. Dehmer
- P. M. Dehmer
Organizations
- Argonne National Laboratory