Inherent lifetime widths of Ar 2p−1, Kr 3d−1, Xe 3d−1, and Xe 4d−1 states

Abstract

The natural widths of the Ar ${2p}^{-1},$ Kr ${3d}^{-1},$ Xe ${3d}^{-1},$ and Xe ${4d}^{-1}$ states have been determined from photoelectron spectra measured with very high resolution. Lifetime widths ${\Gamma }_L$ of $104\pm 3\mathrm{meV}$ and $111\pm 3\mathrm{meV}$ were obtained for the Xe ${4d}_{3/2}^{-1}$ and ${4d}_{5/2}^{-1}$ states, respectively. In contrast, no differences in the inherent lifetime width could be found for the spin-orbit split components of Ar $2p$ $({\Gamma }_L=118\mathrm{}\pm 4\mathrm{meV})$ and Kr $3d$ $({\Gamma }_L=88\mathrm{}\pm 4\mathrm{meV})$ ionized states. The lifetime widths of the Xe ${3d}_{3/2}^{-1}$ and ${3d}_{5/2}^{-1}$ states were found to be $490\pm 30\mathrm{meV}$ and $510\pm 30\mathrm{meV},$ respectively. The extracted lifetime widths are compared with the previously published experimental results.