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Theory of attosecond absorption spectroscopy in krypton
Department of Physics and Astronomy, Aarhus University.
Stockholm University, Faculty of Science, Department of Physics. (Atomic Physics)
Department of Physics and Astronomy, Aarhus University.
2012 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 85, 013415- p.Article in journal (Refereed) Published
Abstract [en]

A theory for time-domain attosecond pump–attosecond probe photoabsorption spectroscopy is formulated and related to the atomic response. The theory is illustrated through a study of attosecond absorption spectroscopy in krypton. The atomic parameters entering the formulation such as energies and Auger widths, as well as wave functions and dipole coupling matrix elements, are determined by accurate many-body structure calculations. We create a hole in a valence shell by an attosecond pump, couple an inner-shell electron to the hole by an attosecond probe, and then monitor the formation of the hole in this manner. In a second example, a hole is created in an inner shell by the first pulse, and the second probe pulse couples an even more tightly bound state to that hole. The hole decays in this example by Auger electron emission, and the absorption spectroscopy follows the decay of the hole and the associated coherences in real time.

Place, publisher, year, edition, pages
2012. Vol. 85, 013415- p.
Keyword [en]
REAL-TIME OBSERVATION; STATES; TRANSITIONS; ATOMS
National Category
Atom and Molecular Physics and Optics
Research subject
Physics
Identifiers
URN: urn:nbn:se:su:diva-71858DOI: 10.1103/PhysRevA.85.013415ISI: 000299839000007OAI: oai:DiVA.org:su-71858DiVA: diva2:486414
Note
3Available from: 2012-01-31 Created: 2012-01-30 Last updated: 2017-12-08Bibliographically approved

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