KβSpectra of Argon and KCl. II. Satellite Excitation

A model for double-vacancy, single-jump satellites is considered for the case of the $K\beta$ spectra of argon, and argon-like ions. The excitation thresholds implied by this model were investigated by quasimonochromatic fluorescence for the $K\beta$ spectrum of chlorine in KCl. Significant alterations in the spectrum, depending on the character of the primary radiation, are reported for this case. From these observations, the initial states for certain of the more prominent spectral features have been identified as belonging to the configuration $\mathrm{KM}$.