Department of Physics and Astronomy: Publications and Other Research
Date of this Version
January 1995
Abstract
Electron-transmission spectroscopy is used to observe structure in the electron-scattering cross section associated with the formation of temporary negative ions and channel-opening effects. A strong ‘‘family’’ resemblance is apparent among the resonances of the alkali metals. From published calculations and angular scattering studies, the lower-lying features are known with some confidence. Based on these, plausible assignments for some of the higher-lying resonances are put forth. We propose that the absence of resonances near the Cs 5 2D and possibly the Na 4 2P and 5 2P thresholds is associated with the negative polarizabilities of these excited states.
Comments
Published by American Physical Society. Phys. Rev. A, 51, 406 (1995). http://pra.aps.org. Copyright © 1995 American Physical Society. Permission to use.