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Resonance Effects in Photoemission Time Delays
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Antal upphovsmän: 92015 (Engelska)Ingår i: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 115, nr 13, artikel-id 133001Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

We present measurements of single-photon ionization time delays between the outermost valence electrons of argon and neon using a coincidence detection technique that allows for the simultaneous measurement of both species under identical conditions. The analysis of the measured traces reveals energy-dependent time delays of a few tens of attoseconds with high energy resolution. In contrast to photoelectrons ejected through tunneling, single-photon ionization can be well described in the framework of Wigner time delays. Accordingly, the overall trend of our data is reproduced by recent Wigner time delay calculations. However, besides the general trend we observe resonance features occurring at specific photon energies. These features have been qualitatively reproduced and identified by a calculation using the multiconfigurational Hartree-Fock method, including the influence of doubly excited states and ionization thresholds.

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2015. Vol. 115, nr 13, artikel-id 133001
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URN: urn:nbn:se:su:diva-122324DOI: 10.1103/PhysRevLett.115.133001ISI: 000361678500001OAI: oai:DiVA.org:su-122324DiVA, id: diva2:876002
Tillgänglig från: 2015-12-02 Skapad: 2015-10-29 Senast uppdaterad: 2017-12-01Bibliografiskt granskad

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Carette, ThomasLindroth, Eva
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