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Sabbar M, Heuser S, Boge R, et al. Resonance Effects in Photoemission Time Delays. Phys Rev Lett. 2015;115(13):133001doi: 10.1103/PhysRevLett.115.133001.
Sabbar, M., Heuser, S., Boge, R., Lucchini, M., Carette, T., Lindroth, E., Gallmann, L., Cirelli, C., & Keller, U. (2015). Resonance Effects in Photoemission Time Delays. Physical review letters, 115(13), 133001. https://doi.org/10.1103/PhysRevLett.115.133001
Sabbar, M, et al. "Resonance Effects in Photoemission Time Delays." Physical review letters vol. 115,13 (2015): 133001. doi: https://doi.org/10.1103/PhysRevLett.115.133001
Sabbar M, Heuser S, Boge R, Lucchini M, Carette T, Lindroth E, Gallmann L, Cirelli C, Keller U. Resonance Effects in Photoemission Time Delays. Phys Rev Lett. 2015 Sep 25;115(13):133001. doi: 10.1103/PhysRevLett.115.133001. Epub 2015 Sep 23. PMID: 26451550.
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Phys Rev Lett. 2015 Sep 25;115(13):133001. doi: 10.1103/PhysRevLett.115.133001. Epub 2015 Sep 23.

Resonance Effects in Photoemission Time Delays.

Physical review letters

M Sabbar, S Heuser, R Boge, M Lucchini, T Carette, E Lindroth, L Gallmann, C Cirelli, U Keller

Affiliations

  1. Physics Department, ETH Zurich, 8093 Zurich, Switzerland.
  2. Laboratoire de Chimie Quantique et Photophysique, CP160/09, Université Libre de Bruxelles, B 1050 Brussels, Belgium.
  3. Physics Department, Stockholm University, AlbaNova University Center, SE-106 91 Stockholm, Sweden.
  4. Institute of Applied Physics, University of Bern, 3012 Bern, Switzerland.

PMID: 26451550 DOI: 10.1103/PhysRevLett.115.133001

Abstract

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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