Double photoionization of atomic carbon and neon

Abstract

Synopsis We consider the double photoionization of the 2p2 valence electrons of atomic carbon, which provides for distinct final-state symmetries depending on the three possible angular momentum couplings (3P, 1 D, and 1S) of the initially-bound p2 electrons that are ejected into the continuum by a single photon. Comparison of this process with neon provides an analogous case for the resulting final states within the treatment of the double photoionization proceeding with the ejected electrons influenced by the remaining bound electrons.