Lowest Energy Electronic States of Rare Earth Monoxides.
Abstract
The electronic spectra of the rare earth monoxides have been nearly intractable for two reasons: There is a tremendous number of molecular electronic states (typically more than 100) expected to occur below 3eV, these states all have nearly identical rotational and vibrational constants (to within 2%) and are, therefore, not readily distinguishable from each other. It has been necessary to develop laser spectroscopic methods which are capable of resolving and dealing unambiguously with complex spectra, recognizing individual electronic states and organizing them into partial energy level diagrams, and linking partial level diagrams for groups of states which, because of selection-rule restrictions, involve mostly disjoint groups of electronic states. In order to provide information of value to either thermochemists or theoreticians, it is important to know that all of the lowest energy electronic states have been found. To this end, a crystal field model, which relates the molecular energy levels to those of the free m+2 ion, has been developed and tested for the 4f6s configuration of CeO.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1980
- Accession Number
- ADA104039
Entities
People
- Robert W. Field
Organizations
- Massachusetts Institute of Technology