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

Abstract

Measurements of the single photoionization cross section of Cu-like Zn${}^{+}$ ions are reported in the energy (wavelength) range 17.5 eV (709 Å) to 90 eV (138 Å). The measurements on this {\it 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. Comparison are made with previous experimental studies, resonance states are identified and contributions from metastable states of Zn${}^{+}$ determined.

arXiv comment15 pages, 5 figures, 7 tables, accepted for publication in MNRAS

References in corpus (30)

• C/O ratio as a Dimension for Characterizing Exoplanetary Atmospheres
• Stellar Abundances in the Solar Neighborhood: The Hypatia Catalog
• Segue 1: An Unevolved Fossil Galaxy from the Early Universe
• Chemical Evolution in Hierarchical Models Of Cosmic Structure I: Constraints on the Early Stellar Initial Mass Function
• The Role of Type Ia Supernovae in Chemical Evolution I: Lifetime of Type Ia Supernovae and Galactic Supernova Rates
• Sulphur and zinc abundances in Galactic halo stars revisited
• Abundances of Cu and Zn in metal-poor stars: clues for Galaxy evolution
• Sulphur and zinc abundances in Galactic stars and damped Lyman-alpha systems
• Characterizing the Chemistry of the Milky Way Stellar Halo: Detailed Chemical Analysis of a Metal-Poor Stellar Stream
• Nucleosynthesis Predictions for Intermediate-Mass AGB Stars: Comparison to Observations of Type I Planetary Nebulae
• s-Process Abundances in Planetary Nebulae
• The Chemical Abundances of Stars in the Halo (CASH) Project. II. A Sample of 16 Extremely Metal-poor Stars
• Nuclear astrophysics: the unfinished quest for the origin of the elements
• Characterizing the Heavy Elements in Globular Cluster M22 and an Empirical s-process Abundance Distribution Derived from the Two Stellar Groups
• New Detections of Arsenic, Selenium, and Other Heavy Elements in Two Metal-Poor Stars
• The Abundances of Light Neutron-Capture Elements in Planetary Nebulae II. s-process Enrichments and Interpretation
• The [Zn/Fe] -- [Fe/H] trend for disk and halo stars
• S-process enrichment in the planetary nebula NGC 3918. Results from deep echelle spectrophotometry
• Photoionization Cross-Sections for the trans-iron element Se${}^{+}$ from 18 eV to 31 eV
• Discovery of Rubidium, Cadmium, and Germanium Emission Lines in the Near-Infrared Spectra of Planetary Nebulae
• The Abundances of Light Neutron-Capture Elements in Planetary Nebulae III. The Impact of New Atomic Data on Nebular Selenium and Krypton Abundance Determinations
• Photoionization cross section calculations for the halogen-like ions Kr${}^{+}$ and Xe${}^{+}$
• Single-photon single ionization of W${}^{+}$ ions: experiment and theory
• The PNe and H II regions in NGC 6822 revisited. Clues to AGB nucleosynthesis
• Experimental Photoionization Cross-Section Measurements in the Ground and Metastable State Threshold Region of Se+
• Improved Neutron-Capture Element Abundances in Planetary Nebulae
• Atomic data for neutron-capture elements I. Photoionization and recombination properties of low-charge selenium ions
• Valence-shell photoionization of Ag-like Xe${}^{7+}$ ions : experiment and theory
• Atomic data for neutron-capture elements III. Charge transfer rate coefficients for low-charge ions of Ge, Se, Br, Kr, Rb, and Xe
• New Atomic Data for Trans-Iron Elements and Their Application to Abundance Determinations in Planetary Nebulae

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