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Near-K-edge single, double, and triple photoionization of C+ ions

A. Müller, A. Borovik, Jr., T. Buhr, J. Hellhund, K. Holste, A. L. D. Kilcoyne, S. Klumpp, M. Martins, S. Ricz, J. Viefhaus, and S. Schippers
Phys. Rev. A 97, 013409 – Published 16 January 2018

Abstract

Single, double, and triple ionization of the C+ ion by a single photon have been investigated in the energy range 286 to 326 eV around the K-shell single-ionization threshold at an unprecedented level of detail. At energy resolutions as low as 12 meV, corresponding to a resolving power of 24 000, natural linewidths of the most prominent resonances could be determined. From the measurement of absolute cross sections, oscillator strengths, Einstein coefficients, multielectron Auger decay rates, and other transition parameters of the main K-shell excitation and decay processes are derived. The cross sections are compared to results of previous theoretical calculations. Mixed levels of agreement are found despite the relatively simple atomic structure of the C+ ion with only five electrons. This paper is a followup to a previous Letter [A. Müller et al., Phys. Rev. Lett. 114, 013002 (2015)].

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  • Received 11 October 2017

DOI:https://doi.org/10.1103/PhysRevA.97.013409

©2018 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

A. Müller1,*, A. Borovik, Jr.2, T. Buhr2, J. Hellhund1, K. Holste2, A. L. D. Kilcoyne3, S. Klumpp4, M. Martins5, S. Ricz6, J. Viefhaus7,†, and S. Schippers2

  • 1Institut für Atom- und Molekülphysik, Justus-Liebig-Universität Gießen, 35392 Giessen, Germany
  • 2I. Physikalisches Institut, Justus-Liebig-Universität Gießen, 35392 Giessen, Germany
  • 3Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, 94720-8225 California, USA
  • 4DESY Photon Science, FS-FLASH-D, 22607 Hamburg, Germany
  • 5Institut für Experimentalphysik, Universität Hamburg, 22761 Hamburg, Germany
  • 6Institute for Nuclear Research, Hungarian Academy of Sciences, 4001 Debrecen, Hungary
  • 7DESY Photon Science, FS-PE, 22607 Hamburg, Germany

  • *alfred.mueller@iamp.physik.uni-giessen.de
  • Present address: Helmholtz-Zentrum Berlin, Department Optics and Beamlines, Berlin, Germany.

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Vol. 97, Iss. 1 — January 2018

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