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Single photoionization of the Zn II ion in the photon energy range 17.5-90.0 eV: Experiment and theory

  • Author(s): Hinojosa, G
  • Davis, VT
  • Covington, AM
  • Thompson, JS
  • Kilcoyne, ALD
  • Antillón, A
  • Hernández, EM
  • Calabrese, D
  • Morales-Mori, A
  • Juárez, AM
  • Windelius, O
  • McLaughlin, BM
  • et al.
Abstract

© 2017 The Authors. Measurements of the single-photoionization cross-section of Cu-like Zn+ions are reported in the energy (wavelength) range 17.5 eV (708 Å) to 90 eV (138 Å). The measurements on this trans-Fe element were performed at the Advanced Light Source synchrotron radiation facility in Berkeley, California at a photon energy resolution of 17 meV using the photon-ion merged-beams end-station. Below 30 eV, the spectrum is dominated by excitation autoionizing resonance states. The experimental results are compared with large-scale photoionization cross-section calculations performed using a Dirac Coulomb R-matrix approximation. Comparisons are made with previous experimental studies, resonance states are identified and contributions from metastable states of Zn+are determined.

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