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Diagrammatic approach to attosecond delays in photoionization
Stockholm University, Faculty of Science, Department of Physics.
Stockholm University, Faculty of Science, Department of Physics.
Stockholm University, Faculty of Science, Department of Physics.
2012 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 86, no 6, 061402- p.Article in journal (Refereed) Published
Abstract [en]

We study laser-assisted photoionization by attosecond pulses using a time-independent formalism based on diagrammatic many-body perturbation theory. Our aim is to provide an ab initio route to the delays for this above-threshold ionization process, which is essential for a quantitative understanding of attosecond metrology. We present correction curves for characterization schemes of attosecond pulses, such as streaking, that account for the delayed atomic response in ionization from neon and argon. We also verify that photoelectron delays from many-electron atoms can be measured using similar schemes if, instead, the so-called continuum-continuum delay is subtracted. Our method is general and it can be extended also to more complex systems and additional correlation effects can be introduced systematically. DOI: 10.1103/PhysRevA.86.061402

Place, publisher, year, edition, pages
2012. Vol. 86, no 6, 061402- p.
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:su:diva-87141DOI: 10.1103/PhysRevA.86.061402ISI: 000312830000001OAI: oai:DiVA.org:su-87141DiVA: diva2:601090
Note

AuthorCount:3;

Available from: 2013-01-28 Created: 2013-01-28 Last updated: 2017-12-06Bibliographically approved

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