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Identifier

000411954

Title

Autoionization resonances strongly driven by stochastic fields

Alternative Title

Συντονισμοί αυτοϊονισμού ισχυρά αγόμενοι από στοχαστικά πεδία

Author

Μουλουδάκης, Γεώργιος Ευθύμιος Β.

Thesis advisor

Ζώτος, Ξενοφών

Reviewer

Λαμπρόπουλος, Π.
Νικολόπουλος, Γ.

Abstract

The availability of strong, short pulse duration and high frequency (XUV and beyond) radiation through recent FEL sources opens up new prospects in the exploration of the strong driving of Autoionization (AI) resonances through photoabsorption experiments. However, such sources exhibit strong stochastic fluctuations leading to a finite bandwidth, that, until now, have not been considered in the theoretical literature of the excitation of AI resonances, simply because the traditional photoabsorption studies of AI states have been carried out mainly by means of weak, practically monochromatic synchrotron radiation sources. As shown in this thesis, a formulation of the problem including the effects of the stochastic character of the radiation fields reveals that under certain values of the relevant parameters the resulting AI profiles can be distorted dramatically and bear no resemblance to traditional Fano resonances. We also study the response of our system under changes in intensity, pulse duration and the bandwidth of the source.

Language

English

Subject

Stochastic fluctuations

Strong fields

Αυτοϊονισμός

Ισχυρά πεδία

Στοχαστικές διακυμάνσεις

Issue date

2017-11-22

Collection

School/Department--School of Sciences and Engineering--Department of Physics--Post-graduate theses