Momentum distributions of ne(n+) ions created by an intense ultrashort laser pulse |
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Authors: | Moshammer Feuerstein Schmitt Dorn Schroter Ullrich Rottke Trump Wittmann Korn Hoffmann Sandner |
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Institution: | Universitat Freiburg, Hermann-Herder Strasse 3, D-79104 Freiburg, Germany. |
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Abstract: | Vector momentum distributions of Ne(n+) (n = 1,2,3) ions created by 30 fs, approximately 1 PW/cm(2) laser pulses at 795 nm have been measured using recoil-ion momentum spectroscopy. Distinct maxima along the light polarization axis are observed at 4.0 and 7.5 a.u. for Ne2+ and Ne3+ production, respectively. Hence, mechanisms based on an instantaneous release of two (or more) electrons can be ruled out as a dominant contribution to nonsequential strong-field multiple ionization. The positions of the maxima are in accord with kinematical constraints set by the classical "rescattering model." |
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