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Title: Unveiling Residual Molecular Binding in Triply Charged Hydrogen Bromide

We present an experimental and theoretical study of triply charged hydrogen bromide ions formed by photoionization of the inner 3d shell of Br. The experimental results, obtained by detecting the 3d photoelectron in coincidence with the two subsequent Auger electrons, are analyzed using calculated potential energy curves of HBr{sup 3+}. The competition between the short-range chemical binding potential and the Coulomb repulsion in the dissociative process is shown. Two different mechanisms are observed for double Auger decay: one, a direct process with simultaneous ejection of two Auger electrons to final HBr{sup 3+} ionic states and the other, a cascade process involving double Auger decay characterized by the autoionization of Br*{sup +} ion subsequent to the HBr{sup 2+} fragmentation.
Authors:
; ; ; ;  [1] ;  [2] ;  [3] ;  [4]
  1. UPMC, Universite Paris 06, LCPMR, 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05 (France) [CNRS, LCPMR (UMR 7614), 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05 (France)
  2. UPMC, Universite Paris 06, LCPMR, 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05 (France) [CNRS, LCPMR (UMR 7614), 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05 (France) [Universite Paris-Est, 5 boulevard Descartes, 77454 Marne-la-Vallee Cedex 2 (France)
  3. Department of Environmental Science, Niigata University, Niigata 950-2181 (Japan)
  4. Photon Factory, Institute of Materials Structure Science, Oho, Tsukuba 305-0801 (Japan)
Publication Date:
OSTI Identifier:
21562081
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 106; Journal Issue: 10; Other Information: DOI: 10.1103/PhysRevLett.106.103002; (c) 2011 American Institute of Physics
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; AUTOIONIZATION; BROMINE IONS; COULOMB FIELD; DECAY; ELECTRONS; FRAGMENTATION; HYDROBROMIC ACID; PHOTOIONIZATION; POTENTIAL ENERGY; POTENTIALS; SHELLS BROMINE COMPOUNDS; CHARGED PARTICLES; ELECTRIC FIELDS; ELEMENTARY PARTICLES; ENERGY; FERMIONS; HALOGEN COMPOUNDS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; IONIZATION; IONS; LEPTONS