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  Attosekundenphysik mit dem Reaktionsmikroskop: Eine Konzeptstudie, erste Experimente und mögliche Anwendungen

Rietz, H. (2012). Attosekundenphysik mit dem Reaktionsmikroskop: Eine Konzeptstudie, erste Experimente und mögliche Anwendungen. PhD Thesis, Ruprecht-Karls-Universität, Heidelberg.

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diss_helga_rietz.pdf (beliebiger Volltext), 38MB
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 Urheber:
Rietz, Helga1, Autor           
Ullrich, Joachim, Gutachter
Motzkus, Marcus, Gutachter
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1Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society, ou_904547              

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 Zusammenfassung: This work describes the setup of an experimental apparatus dedicated for time-resolved momentum-spectroscopy of small quantum systems and the first measurements conducted with it. The combination of the shortest currently available laser pulses that last for a few 100 attoseconds only (1 as = 10-18 s) with a reactionmicroscope,a detector capable of the complete reconstruction of the momentum-vectorsof all charged particles that emerge from an ionization- or a dissociation-process, enablesprecise and detailed investigations of processes that occur in the electronic structure ofatoms and small molecules. The first measurements carrried out in the context of this thesis were aimed at a complete characterization of the generated attosecond pulses. Their duration was measured to be ~ 250 as, and the XUV-radiation is delivered in pulse trains of ~30 separate pulses each. After the preparative experiments, a comparative study of the photoelectron angular distributions following ionization by attosecond pulses in an IR dressing field was carried out. In doing so, observations of previously published results could be reproduced. In addition, our measurements present for the first time detailled, energetically and angularly resolved data on the two-colour photoionization of four noble gases, all taken under the same experimental conditions.

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 Datum: 2012-12-12
 Publikationsstatus: Angenommen
 Seiten: II, 146 S : Ill., graph. Darst.
 Ort, Verlag, Ausgabe: Heidelberg : Ruprecht-Karls-Universität
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 Art des Abschluß: Doktorarbeit

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