Additional features in the 3d-4p x-ray-emission spectrum of Xe.

Abstract

The high-resolution 3d-4p x-ray-emission spectrum of Xe excited by electron impact was measured. In addition to the prominent peak due to 3${\mathit{d}}_{5/2\mathrm{\ensuremath{-}}}$4${\mathit{p}}_{3/2}$ previously reported, the experimental high-resolution spectrum shows a weak peak, identified as 3${\mathit{d}}_{3/2\mathrm{\ensuremath{-}}}$4${\mathit{p}}_{3/2}$, and satellites. The satellites are tentatively attributed to 3${\mathit{d}}^{\mathrm{\ensuremath{-}}1}$${\mathit{X}}^{\mathrm{\ensuremath{-}}1\mathrm{\ensuremath{-}}}$4${\mathit{p}}^{\mathrm{\ensuremath{-}}1}$${\mathit{X}}^{\mathrm{\ensuremath{-}}1}$ (X=4s, 4p, and 4d), where the initial doubly ionized states are created by the Auger (Coster-Kronig) decay of the 2p and/or 3p level. The experimental 3d-4p x-ray spectrum is compared with a theoretical spectrum calculated by the ab initio Green's-function method.