Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Physics
Potential-Barrier Effects In Photoabsorption. I. General Theory, Anthony F. Starace
Potential-Barrier Effects In Photoabsorption. I. General Theory, Anthony F. Starace
Anthony F. Starace Publications
This paper combines parts of the theories of spectroscopy, collisions, and autoionization to provide a unified framework for a quantitative theory of experimental data on 4d-shell photoabsorption in rare earths. The calculations by atomic theory are intended for tentative application to solids. The theory should also apply to 3p-shell photoabsorption in the transition metals and to other cases where the effect of a potential barrier is crucial. A prescription is given for the ab initio numerical calculation of total and partial photoabsorption cross sections, as well as of the profiles, energies, and widths of resonances. A …
Potential-Barrier Effects In Photoabsorption. Iii. Application To 4D-Shell Photoabsorption In Lanthanum, J.L. Dehmer, Anthony F. Starace
Potential-Barrier Effects In Photoabsorption. Iii. Application To 4D-Shell Photoabsorption In Lanthanum, J.L. Dehmer, Anthony F. Starace
Anthony F. Starace Publications
An exploratory calculation of the photoabsorption cross section near the 4d ionization threshold of lanthanum metal is carried out. The level structure of the configuration 4d94f is found to be altered by interaction with the continuum configuration 4d9εf. The Fano profile of the resonance above threshold is calculated, as are the oscillator strengths of the discrete states below threshold. Our results provide the ground work for more detailed calculations.