Probing collective multi-electron dynamics in xenon with high-harmonic spectroscopy

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DOIResolve DOI: http://doi.org/10.1038/nphys1940
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TypeArticle
Journal titleNature Physics
Volume7
Issue6
Pages464467; # of pages: 4
AbstractHigh-harmonic spectroscopy provides a unique insight into the electronic structure of atoms and molecules1, 2, 3, 4, 5. Although attosecond science holds the promise of accessing the timescale of electron–electron interactions, until now, their signature has not been seen in high-harmonic spectroscopy. We have recorded high-harmonic spectra of atoms to beyond 160 eV, using a new, almost ideal laser source with a wavelength of 1.8 μm and a pulse duration of less than two optical cycles. We show that we can relate these spectra to differential photoionization cross-sections measured with synchrotron sources. In addition, we show that the high-harmonic spectra contain features due to collective multi-electron effects involving inner-shell electrons, in particular the giant resonance in xenon. We develop a new theoretical model based on the strong-field approximation and show that it is in agreement with the experimental observations.
Publication date
LanguageEnglish
AffiliationNRC Steacie Institute for Molecular Sciences; National Research Council Canada
Peer reviewedYes
NPARC number19588989
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Record identifier5e0c89e0-c3d6-4b8c-a679-69edc89ce61a
Record created2012-03-07
Record modified2016-05-09
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