Mainz 2017 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 15: Environment Controlled Processes

MO 15.2: Vortrag

Donnerstag, 9. März 2017, 15:00–15:15, N 6

Interatomic coulombic decay in macroscopic environments — •Joshua Leo Hemmerich, Robert Bennett, and Stefan Yoshi Buhmann — Physikalisches Institut, Albert-Ludwigs-Universität Freiburg

Interatomic coulombic decay (ICD) [1] has been a subject of study for the last two decades. The process takes place when a subunit of a cluster is ionized by removal of an inner valence electron. If the energy of the resulting state lies beneath the double ionization threshold a second subunit can be ionized by exchange of a virtual photon. Using the framework of macroscopic quantum electrodynamics [2] and time-dependent perturbation theory we study this process in arbitrary material environments, e.g. near a conducting plate. We compare our results in free space with the asymptotic quantum chemistry results based on the non-retarded Coulomb interaction to elucidate the impact of retardation. Finally, we briefly comment on the influence of macroscopic dielectric bodies on the ICD process.

[1] L.S. Cederbaum, et. al. Phys. Ref. Lett. 79 (24) 1997

[2] S. Scheel and S. Y. Buhmann, Acta Physica Slovaca 58 (5) 2008