title: Slow Interatomic Coulombic Decay of Multiply Excited Neon Clusters.
abstract: Ne clusters (∼5000  atoms) were resonantly excited (2p→3s) by intense free electron laser (FEL) radiation at FERMI. Such multiply excited clusters can decay nonradiatively via energy exchange between at least two neighboring excited atoms. Benefiting from the precise tunability and narrow bandwidth of seeded FEL radiation, specific sites of the Ne clusters were probed. We found that the relaxation of cluster surface atoms proceeds via a sequence of interatomic or intermolecular Coulombic decay (ICD) processes while ICD of bulk atoms is additionally affected by the surrounding excited medium via inelastic electron scattering. For both cases, cluster excitations relax to atomic states prior to ICD, showing that this kind of ICD is rather slow (picosecond range). Controlling the average number of excitations per cluster via the FEL intensity allows a coarse tuning of the ICD rate.
authors.affiliation: Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan.
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authors.affiliation: Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan.
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authors.affiliation: Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan.
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authors.affiliation: Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan.
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authors.affiliation: Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan.
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authors.affiliation: Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan.
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authors.affiliation: Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan.
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authors.affiliation: Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan.
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authors.affiliation: Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan.
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authors.affiliation: Department of Physics, Graduate School of Science, Kyoto University, 606-8502 Kyoto, Japan.
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authors.affiliation: Dipartimento di Fisica, Università degli Studi di Milano, 20133 Milano, Italy.
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authors.affiliation: CNR-IFN, 20133 Milan, Italy.|Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany.
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authors.affiliation: CNR-IFN, 20133 Milan, Italy.
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authors.affiliation: CNR-IFN, 20133 Milan, Italy.
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authors.affiliation: CNR-IFN, 20133 Milan, Italy.
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authors.affiliation: CNR-IFN, 20133 Milan, Italy.
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authors.affiliation: CNR-IFN, 20133 Milan, Italy.|Center for Free-Electron Laser Science, DESY, 22607 Hamburg, Germany.
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authors.affiliation: CNR-IFN, 20133 Milan, Italy.|Center for Free-Electron Laser Science, DESY, 22607 Hamburg, Germany.
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authors.affiliation: CNR-IFN, 20133 Milan, Italy.
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authors.affiliation: Institut für Optik und Atomare Physik, TU Berlin, 10623 Berlin, Germany.
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authors.affiliation: Institut für Optik und Atomare Physik, TU Berlin, 10623 Berlin, Germany.
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authors.affiliation: Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany.
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authors.affiliation: Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 980-8577 Sendai, Japan.
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