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Hannover 2013 – scientific programme

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A: Fachverband Atomphysik

A 34: SYCD Interatomic and intermolecular Coulombic decay (contributed for SYCD in A, MO)

A 34.2: Talk

Thursday, March 21, 2013, 14:30–14:45, B 302

The role of the partner atom and resonant excitation energy in ICD in rare gas dimers — •Patrick O’Keeffe1, Paola Bolognesi1, Marcello Coreno1, Enrico Ripani1, Lorenzo Avaldi1, Michele Devetta2, Robert Richter3, Michele Di Fraia3, Carlo Callegari3, Kevin Prince3, Antti Kivimaki4, and Michele Alagia41CNR-IMIP, Area della Ricerca di Roma 1, Italy — 2Dipartimento di Fisica, Università degli Studi di Milano, Milan, Italy — 3Sincrotrone Trieste, Area Science Park, 34149 Trieste, Italy — 4CNR-IOM, 34149 Trieste, Italy

This work shows experimental evidence for Interatomic Coulombic Decay (ICD) in mixed rare gas dimers following resonant Auger decay. A modified velocity map imaging apparatus together with a cooled supersonic beam containing Ar2, ArNe and ArKr dimers was used to record electron VMI images in coincidence with either one or two mass selected ions following excitation of the species on five resonances converging to the Ar+ 2p1/2−1 and 2p3/2−1 thresholds using the synchrotron radiation of Elettra. The results show that the kinetic energy distribution of the ICD electrons observed in coincidence with the ions from Coulomb explosion of the dimers depends on the partner ion and resonant excitation photon energy.

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