Chemical effects in theKx-ray yield of sulfur

Abstract
We have observed a chemical-environment effect on the total K x-ray yield of sulfur in SF6, SO2, and H2S. The yield from SF6 is 16% higher than the yield from H2S, whereas the yield from SO2 is, within error, the same as H2S. Variation in the fluorescence yield for the different molecules is considered to be the most probable cause of the effect.