Rydberg States of 7Li(2) by Pulsed Optical-Optical Double Resonance Spectroscopy.
Abstract
Three Rydbert series of electronic states of 7Li2 have been characterized by pulsed optical-optical double resonance spectroscopy. The observed Rydbert states, which include the previously reported E1 sigma g+ and G1 pi g states, have been identified as 3-10 sigma 1 sigma g+, and 3-10d sigma 1 sigma g+, and 3-15d pi 1 pi g. The molecular constants for several of the upper members of each of the above series have been used to deduce the ionization potential of 7Li2 and molecular constants for the X2 sigma g+ state of 7Li2+. Low-order Dunham coefficients that describe at least the range v=0-2 are reported for twenty-eight previously uncharacterized gerade states of 7Li2. RKR potentials were derived from Dunham coefficients for all states that appeared to be unperturbed. A large number of both homogeneous and heterogeneous perturbations were observed. Two significant revisions were made in experimental procedures reported earlier. First, a versatile new laser dye mixture was discovered and successfully utilized in the investigation of the Rydbert states of 7Li2. Second, a computer-based data collection system was used in place of chart reading as the means of obtaining spectral line frequencies from raw d.c. voltage data.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 12, 1982
- Accession Number
- ADA121487
Entities
People
- Terence Lamar Tipton
Organizations
- Pennsylvania State University