Dependence of fluorescence yield on atomic configuration

A statistical weighting procedure is used to calculate the fluorescence yields omega K and omega L23 for various defect atomic configurations of the argon atom. The changes in fluorescence yield which accompany atoms with multiple vacancies in various shells should be included when determining inner shell ionization cross sections from X-ray data in heavy ion-atom collision studies. The general features discussed may be important for solid as well as gaseous targets.