Far-Ultraviolet Spectra Due to4dElectrons in the Alkali Iodides

Abstract
The absorption coefficients of thin films of NaI, KI, and CsI were measured with a grazing-incidence spectrometer in the range 75-250 Å utilizing the synchrotron continuum from the University of Wisconsin 250-MeV electron storage ring. The observed structure is interpreted in terms of both atomic and solid-state effects.