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Double-electron ionization driven by inhomogeneous fields

MPG-Autoren
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Ortmann,  Lisa
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Landsman,  Alexandra
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

Externe Ressourcen

https://link.springer.com/article/10.1007/s00340-017-6672-4
(Verlagsversion)

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Zitation

Chacon, A., Ortmann, L., Cucchietti, F., Suarez, N., Perez-Hernandez, J. A., Ciappina, M. F., et al. (2017). Double-electron ionization driven by inhomogeneous fields. Applied Physics B-Photophysics and Laser Chemistry, 123(4): 116. doi:10.1007/s00340-017-6672-4.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-002D-C5CA-1
Zusammenfassung
Electron-electron correlation effects play a crucial role in our understanding of sequential (SDI) and non-sequential double ionization (NSDI) mechanisms. Here, we present a theoretical study of NSDI driven by plasmonic-enhanced spatial inhomogeneous fields. By numerically solving the time-dependent Schrdinger equation for a linear reduced model of He and a double-electron time-evolution probability analysis, we provide evidence for enhancement effects in NSDI showing that the double ionization yield at lower laser peak intensities is increased due to the spatial inhomogeneous character of plasmonicenhanced field. The change in the emission direction of the double-ion as a function of the field inhomogeneity degree demonstrates that plasmonic-enhanced fields could configure a reliable instrument to control the ion emission. Furthermore, our quantum mechanical model, as well as classical trajectory Monte Carlo simulations, show that inhomogeneous fields are as well as a useful tool for splitting the binary and recoil processes in the rescattering scenario.