The Ionization Cross Section of the SilverLIIIState

The ionization cross section of the silver $L_{\mathrm{III}}$ state has been measured, in arbitrary units, by observing the intensity of the $L\alpha$ doublet radiation from a thin target of silver bombarded by cathode rays whose energies ranged up to nine times the excitation energy of the $L_{\mathrm{III}}$ state. The observed data are corrected for the effects of diffusion, rediffusion, and retardation of the cathode rays. The measured values of the cross section agree fairly well with calculations based on the Born approximation, but the agreement is not within the estimated experimental error.