Unusually broad x-ray emission lines:Lγ2,3(L1N2,3) spectra ofSn50,Te52, andI53

Abstract

The $L{\gamma }_{2,3}(L_1{N}_{2,3}$) x-ray emission spectra from ${}_{50}{}^{}{}_{}{}^{}\mathrm{Sn}$, ${}_{52}{}^{}{}_{}{}^{}\mathrm{Te}$, and ${}_{53}{}^{}{}_{}{}^{}\mathrm{I}$, excited by direct electron bombardment, were measured with a double-crystal monochromator. The spectral profiles are similar to their $4p$ energy-level-region x-ray photoelectron spectra (XPS), with base widths of about 50 eV. The origin of these unusual line profiles is attributed to many-body effects in their final states which are comparable to their respective XPS final states.