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MO: Fachverband Molekülphysik

MO 23: Resonant Energy Transfer and Interatomic Coulombic Decay II

MO 23.2: Vortrag

Freitag, 9. März 2018, 10:45–11:00, PA 1.150

Time-Resolved Interatomic Coulomb Electron-Capture by Ba⁺ through Rb proximity — •Axel Molle¹, Oriol Vendrell², and Annika Bande¹ — ¹Institute for Methods for Material Development, Helmholtz-Zentrum Berlin f. Materialien & Energie, Berlin — ²Department of Physics and Astronomy, Aarhus University, Aarhus, Denmark

In this work, we will present results of a time-resolved numerical investigation of the Ultrafast Interatomic Coulomb Electron Capture (ICEC) as a first attempt to predict experiments of the near future. A species A captures a free electron in the ICEC process by long-range energy transfer through Coulomb interaction to a bound electron in a neighbouring species B, which is then ionized.

From a theoretical perspective, even though first predicted for atoms and molecules through the asymptotic approximation of scattering theory [1], investigation of the time-resolved ICEC dynamics has been successful in lower-dimensional systems [2]. From the experimental side, on the other hand, techniques for trapping ultracold ions and atom clouds are advancing. This may enable investigating ICEC in an experiment in the near future.

We thus numerically study the dynamics of such an exemplary experiment at ultracold temperatures, with a barium cation trapped in a cloud of rubidium atoms, in order to predict and pave the way for time-resolved ICEC experiments.

[1] Gokhberg / Cederbaum, Phys. Rev. A 82 (2010).

[2] Pont et al., J. Phys. Condens. Matter 28 (2016).