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Updated: Jul 10, 2026

Hyperpolarized Xenon for NMR and MRI Applications
Published on: September 6, 2012
Appearance of interatomic Coulombic decay in Ar, Kr, and Xe homonuclear dimers
P Lablanquie1, T Aoto, Y Hikosaka
1LCP-MR, Université Pierre et Marie Curie-Paris 6 et CNRS (UMR 7614), 11 Rue P et M Curie, 75231 Paris, France. pascal.lablanquie@ccr.jussieu.fr
Abstract:
Interatomic Coulombic decay (ICD) is observed in the rare gas homonuclear dimers Ar2, Kr2, and Xe2 with photoion spectroscopy techniques. Inner valence ionization of the outer ns shell of these systems is known to create a metastable state that dissociates to form a ground state ion and a neutral excited fragment. Inner valence ionization to form ns satellite states leads to similar dissociations, but the neutral fragment gets all the more excited as the internal energy of the ns satellite state increases. When enough excitation energy is transferred to reach the ionization potential, ICD occurs. ICD threshold is observed to coincide with the position of the A+A+ ground state in the Franck-Condon region.
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