The O K⁻²V spectrum of CO: the influence of the second core-hole

Abstract

A K−2V photoelectron spectrum of the CO molecule, showing several core-ionized core-excited states, has been recorded and the different spectral features have been interpreted in terms of their direct or conjugate nature.

Simulation of Auger decay dynamics in the hard X-ray regime: HCl as a showcase

“…Nevertheless, some of these final states are meta-stable with a shallow potential well like L −2 4sσ or L −2 3dσ and other (L −2 4pσ,π and L −2 4pσ,π) are dissociative. A similar behavior was found for the O K −2 Ryd states in CO, 33 which can be compared with the molecule CNe 2+ . From these results we conclude that double-core-hole Rydberg excitations tend to be close to the borderline between metastable and dissociative so that each state has to be individually considered.…”

Gas phase Photoemission studies in the hard X-ray domain

“…Spectral bandwidth has been measured allowing to determine the lifetime of the DCH states. This technique has been applied to the neon atom [15], the H2O molecule [16], the CS2 and SF6 molecules [17], the HCl molecule [18], the O K -2 CO2 molecule [19].…”