title: Double-Core-Hole States in Neon: Lifetime, Post-Collision Interaction, and Spectral Assignment.
abstract: Using synchrotron radiation and high-resolution electron spectroscopy, we have directly observed and identified specific photoelectrons from K^{-2}V states in neon corresponding to simultaneous 1s ionization and 1s→valence excitation. The natural lifetime broadening of the K^{-2}V states and the relative intensities of different types of shakeup channels have been determined experimentally and compared to ab initio calculations. Moreover, the high-energy Auger spectrum resulting from the decay of Ne^{2+}K^{-2} and Ne^{+}K^{-2}V states as well as from participator Auger decay from Ne^{+}K^{-1}L^{-1}V states, has been measured and assigned in detail utilizing the characteristic differences in lifetime broadenings of these core hole states. Furthermore, post collision interaction broadening of Auger peaks is clearly observed only in the hypersatellite spectrum from K^{-2} states, due to the energy sharing between the two 1s photoelectrons which favors the emission of one slow and one fast electron.
authors.affiliation: Sorbonne Universités, UPMC Université Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris, France.
authors.forename: G
authors.initials: G
authors.lastname: Goldsztejn
authors.affiliation: Sorbonne Universités, UPMC Université Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris, France.|Synchrotron SOLEIL, l'Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France.
authors.forename: T
authors.initials: T
authors.lastname: Marchenko
authors.affiliation: Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Püttner
authors.affiliation: Sorbonne Universités, UPMC Université Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris, France.|Synchrotron SOLEIL, l'Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France.
authors.forename: L
authors.initials: L
authors.lastname: Journel
authors.affiliation: Sorbonne Universités, UPMC Université Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris, France.|Synchrotron SOLEIL, l'Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France.
authors.forename: R
authors.initials: R
authors.lastname: Guillemin
authors.affiliation: Sorbonne Universités, UPMC Université Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris, France.
authors.forename: S
authors.initials: S
authors.lastname: Carniato
authors.affiliation: Sorbonne Universités, UPMC Université Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris, France.
authors.forename: P
authors.initials: P
authors.lastname: Selles
authors.affiliation: Sorbonne Universités, UPMC Université Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris, France.|Synchrotron SOLEIL, l'Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France.
authors.forename: O
authors.initials: O
authors.lastname: Travnikova
authors.affiliation: Synchrotron SOLEIL, l'Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France.
authors.forename: D
authors.initials: D
authors.lastname: Céolin
authors.affiliation: Centro de Ciéncias Naturais e Humanas, Universidade Federal do ABC (UFABC), Rua Santa Adélia 166, 09210-170 Santo André, São Paulo, Brazil.
authors.forename: A F
authors.initials: AF
authors.lastname: Lago
authors.affiliation: Department of Physics, University of Gothenburg, SE-412 96 Gothenburg, Sweden.
authors.forename: R
authors.initials: R
authors.lastname: Feifel
authors.affiliation: Sorbonne Universités, UPMC Université Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris, France.
authors.forename: P
authors.initials: P
authors.lastname: Lablanquie
authors.affiliation: Sorbonne Universités, UPMC Université Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris, France.|Department of Physics and Astronomy, Uppsala University, P.O. Box 516, SE-751 20 Uppsala, Sweden.
authors.forename: M N
authors.initials: MN
authors.lastname: Piancastelli
authors.affiliation: Sorbonne Universités, UPMC Université Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris, France.
authors.forename: F
authors.initials: F
authors.lastname: Penent
authors.affiliation: Sorbonne Universités, UPMC Université Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris, France.|Synchrotron SOLEIL, l'Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France.
authors.forename: M
authors.initials: M
authors.lastname: Simon