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

Autor: Hinojosa, G., Davis, V. T., Covington, A. M., Thompson, J. S., Kilcoyne, A. L. D., Antillón, A., Hernández, E. M., Calabrese, D., Morales-Mori, A., Juárez, A. M., Windelius, O., McLaughlin, B. M.
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Zdroj: Monthly Notices of the Royal Astronomical Society; Oct2017, Vol. 470 Issue 4, p4048-4060, 13p
Abstrakt: 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. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index