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1.	Iablonskyi, D., et al. (author) Slow Interatomic Coulombic Decay of Multiply Excited Neon Clusters 2016 In: Physical Review Letters. - 0031-9007. ; 117:27 Journal article (peer-reviewed)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.
2.	Takanashi, T, et al. (author) Time-Resolved Measurement of Interatomic Coulombic Decay Induced by Two-Photon Double Excitation of Ne2 2017 In: Physical Review Letters. - 0031-9007. ; 118:3 Journal article (peer-reviewed)abstract The hitherto unexplored two-photon doubly excited states [Ne∗(2p-13s)]2 were experimentally identified using the seeded, fully coherent, intense extreme ultraviolet free-electron laser FERMI. These states undergo ultrafast interatomic Coulombic decay (ICD), which predominantly produces singly ionized dimers. In order to obtain the rate of ICD, the resulting yield of Ne2+ ions was recorded as a function of delay between the extreme ultraviolet pump and UV probe laser pulses. The extracted lifetimes of the long-lived doubly excited states, 390(-130/+450) fs, and of the short-lived ones, less than 150 fs, are in good agreement with ab initio quantum mechanical calculations.

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Type of publication: journal article (2)

Type of content: peer-reviewed (2)

Author/Editor: Nishiyama, T. (2); Johnsson, P. (2); Negro, M. (2); Ferrari, E. (2); Alagia, M (2); Coreno, M (2); show more...; Prince, K C (2); Ueda, K (2); Allaria, E. (2); De Ninno, G. (2); Di Mitri, S. (2); Diviacco, B. (2); Giannessi, L. (2); Penco, G. (2); Serpico, C. (2); Spezzani, C. (2); Fukuzawa, H. (2); Iablonskyi, D. (2); Kumagai, Y. (2); Motomura, K. (2); Nagaya, K. (2); Takanashi, T. (2); Calegari, F. (2); Plekan, O. (2); Callegari, C. (2); Stienkemeier, F. (2); Mudrich, M. (2); Berrah, N. (2); Mondal, S. (2); Finetti, P. (2); Piseri, P. (2); Ovcharenko, Y. (2); Carpeggiani, P (2); Sansone, G. (2); Tachibana, T. (2); Matsunami, K. (2); Reduzzi, M. (2); Castrovilli, M. C. (2); Dubrouil, A. (2); Vozzi, C. (2); Devetta, M. (2); Facciala, D. (2); Trabattoni, A. (2); Schütte, B. (2); Kuleff, A. I. (2); Jabbari, G. (2); Nikolov, I. (1); Cederbaum, Lorenz S. (1); Möller, T. (1); Golubev, Vladimir N. (1); show less...

University: Lund University (2)

Language: English (2)

Research subject (UKÄ/SCB): Natural sciences (2)

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