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          Institute: MPI für Kernphysik     Collection: Physics with Ultrashort Laser Pulses     Display Documents



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ID: 441467.0, MPI für Kernphysik / Physics with Ultrashort Laser Pulses
Few-Photon Multiple Ionization of N2 by Extreme Ultraviolet Free-Electron Laser Radiation
Authors:Jiang, Y. H.; Rudenko, A.; Kurka, M.; Kühnel, K. U.; Ergler, T.; Foucar, L.; Schöffler, M.; Schössler, S.; Havermeier, T.; Smolarski, M.; Cole, K.; Dörner, R.; Düsterer, S.; Treusch, R.; Gensch, M.; Schröter, C. D.; Moshammer, R.; Ullrich, J.
Language:English
Date of Publication (YYYY-MM-DD):2009-03-25
Title of Journal:Physical Review Letters
Journal Abbrev.:Phys. Rev. Lett.
Volume:102
Issue / Number:12
Start Page:1
End Page:4
Sequence Number of Article:123002
Copyright:©2009 The American Physical Society
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:Few-photon multiple ionization of N2 was studied differentially in a reaction microscope using 44 eV, ~25 fs, intense (~1013 W/cm2) photon pulses from FLASH. Sequential ionization is observed to dominate. For various intermediate charge states N2n+ we find a considerable excess of photons absorbed compared to the minimum number that would energetically be required. Photoionization of aligned N2n+ ions, produced by photon absorption in sequential steps, is explored and few-photon absorption pathways are traced by inspecting kinetic energy releases and fragment-ion angular distributions.
Classification / Thesaurus:33.80.-b
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Group of J. Ullrich/Strong-Fields Physics (R. Moshammer)
External Affiliations:Max-Planck Advanced Study Group at CFEL, 22607 Hamburg, Germany
Institut für Kernphysik, Universität Frankfurt, 60486 Frankfurt, Germany
DESY, Notkestrasse 85, 22607 Hamburg, Germany
Identifiers:DOI:10.1103/PhysRevLett.102.123002
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