Correlation between double and nonresonant single ionization |
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Authors: | Wiehle R Witzel B |
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Institution: | Department of Molecular and Optical Physics, Albert-Ludwigs-Universit?t Freiburg, Hermann-Herder-Strasse 3, Germany. |
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Abstract: | We performed simultaneous measurements of electrons and ions produced in Xe photoionization driven by an 800-nm, 100-fs laser pulse. The obtained energy and angular resolved electron spectra allow the identification of the electronic states populated during the ionization. Xe2+ ions appear at the same laser intensity as electrons emerging from a nonresonant 9-photon ionization process of Xe. Similar to optical tunneling ionization, the nonresonant ionization delivers low-energy electrons needed for the formation of Xe2+ by a backscattering process. |
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