title: Collective interatomic decay of multiple vacancies in clusters.
abstract: We predict that inner-shell ionization of more than one atom (or molecule) in a cluster, e.g., by intense free-electron laser radiation, can lead to an interatomic decay process in which the formed vacancy states decay simultaneously, while a neighboring neutral species is ionized. This collective decay phenomenon can be regarded as a transfer of two or more virtual photons from the ionized cluster units to a neutral one. Simulations of collective decay in (4s-1, 4s-1) (Kr+)2Ar show that the two-virtual-photon process can be competitive with the dissociative nuclear dynamics of the doubly ionized cluster. Generality of the collective interatomic decay is discussed.
authors.affiliation: Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Str. 38, D-01187 Dresden, Germany. vitali@mpipks-dresden.mpg.de
authors.forename: Vitali
authors.initials: V
authors.lastname: Averbukh
authors.forename: Premysl
authors.initials: P
authors.lastname: Kolorenc