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A: Fachverband Atomphysik

A 17: Collision processes and energy transfer I (jointly with MO)

A 17.4: Vortrag

Donnerstag, 13. März 2008, 09:30–09:45, 3F

Interatomic decay of inner-valence-excited states in clusters — •Kirill Gokhberg, Vitali Averbukh, and Lorenz S. Cederbaum — Theoretische Chemie, Physikalisch-Chemisches Institut, Universitaet Heidelberg, INF 229, 69120 Heidelberg, BW

In an isolated atom, excitation of an inner valence electron above the outer valence subshell leads to creation of an autoionizing state decaying by the resonant Auger mechanism. Recently, it has been demonstrated experimentally that in a cluster, the inner-valence-excited states can decay also by an interatomic mechanism which has been called resonant interatomic Coulombic decay (RICD). Here we show that RICD is indeed the leading, but not the only possible interatomic decay mode of the inner-valence excitations in clusters [1]. Using Ne (2s → 3p) excitation in MgNe cluster as an example, we explore the possible decay mechanisms and draw conclusions on their relative importance and on the nature of the corresponding decay products.

1. K. Gokhberg, V. Averbukh, and L.S. Cederbaum, J. Chem. Phys. 124, 144315 (2006)