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Characterizing attosecond pulses in the soft x-ray regime
Stockholm University, Faculty of Science, Department of Physics.
Number of Authors: 2
2017 (English)In: Journal of Physics B: Atomic, Molecular and Optical Physics, ISSN 0953-4075, E-ISSN 1361-6455, Vol. 50, no 10, 104002Article in journal (Refereed) Published
Abstract [en]

Attosecond x-ray pulses offer unprecedented opportunities for probing and triggering new types of ultrafast motion. At the same time, pulse characterization of x-rays presents new challenges that do not exist in the UV regime. Inner-shell ionization is the dominant ionization mechanism for x-rays and it is followed by secondary processes like fluorescence, Auger decay, and shake-up. In general, we find that inner-shell ionization and secondary processes can create additional delay-dependent modulations that will affect pulse reconstruction schemes. Our recently proposed pulse characterization method (Pabst and Dahlstrom 2016 Phys. Rev. A 94 013411), where a bound electron wavepacket is sequentially photoionized by the attosecond pulse, can be adapted to mitigate the impact of these effects, thus opening up an avenue for reliable pulse reconstruction in the x-ray regime.

Place, publisher, year, edition, pages
2017. Vol. 50, no 10, 104002
Keyword [en]
attosecond, x-ray, pulse characterization, inner-shell ionization, Auger decay, shake-up, fluorescence
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-143437DOI: 10.1088/1361-6455/aa65a1ISI: 000400291500001OAI: oai:DiVA.org:su-143437DiVA: diva2:1107227
Available from: 2017-06-09 Created: 2017-06-09 Last updated: 2017-06-09Bibliographically approved

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