KX-Ray Absorption Spectra of Some Compounds of Bromine, Rubidium and Strontium

Abstract

The $K$ x-ray absorption spectrum of Br in solid AgBr and in each of the vapors C${\mathrm{H}}_3$Br, ${\mathrm{C}}_2$ ${\mathrm{H}}_5$Br and ${\mathrm{Br}}_2$ is obtained with a double crystal ionization spectrometer. Edge widths and the positions of secondary fine structure are given and discussed. The small widths given were checked by narrow $K$ edges obtained for Rb in RbBr and Sr in Sr${\mathrm{Cl}}_2$ and are shown to be in agreement with data on emission line widths. The effect of chemical combination on the wave-length position of the main edge is discussed.