Energy Levels, Lifetimes and Transition rates for P-like ions from Cr X to Zn XVI from large-scale Relativistic Multiconfiguration Calculations

Abstract

The fully relativistic multiconfiguration Dirac--Hartree--Fock method is used to compute excitation energies and lifetimes for the 143 lowest states of the $3s^{2}3p^3$, $3s3p^4$, $3s^{2}3p^{2}3d$, $3s3p^{3}3d$, $3p^5$, $3s^{2}3p3d^2$ configurations in P-like ions from Cr X to Zn XVI. Multipole (E1, M1, E2, M2) transition rates, line strengths, oscillator strengths, and branching fractions among these states are also given. Valence-valence and core-valence electron correlation effects are systematically accounted for using large basis function expansions. Computed excitation energies are compared with the NIST ASD and CHIANTI compiled values and previous calculations. The mean average absolute difference, removing obvious outliers, between computed and observed energies for the 41 lowest identified levels in Fe XII is only 0.057 \%, implying that the computed energies are accurate enough to aid identification of new emission lines from the sun and other astrophysical sources. The amount of energy and transition data of high accuracy is significantly increased for several P-like ions of astrophysics interest, where experimental data are still very scarce.

References in corpus (9)

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• Extended Calculations of Spectroscopic Data: Energy Levels, Lifetimes and Transition rates for O-like ions from Cr XVII to Zn XXIII
• Multi-configuration Dirac-Hartree-Fock calculations of forbidden transitions within the 3d^k ground configurations of highly charged ions (Z=72-83)
• Thermodynamic Spectrum of Solar Flares Based on SDO/EVE Observations: Techniques and Statistical Results
• Benchmarking Atomic Data for Astrophysics: Be-like Ions between B II and Ne VII

Cited by in corpus (9)

• CHIANTI -- an atomic database for emission lines -- Paper XVI: Version 10, further extensions
• CHIANTI - an atomic database for emission lines - Paper XV: Version 9, improvements for the X-ray satellite lines
• Large-scale multiconfiguration Dirac-Hartree-Fock calculations for astrophysics: Cl-like ions from Cr~VIII to Zn~XIV
• Benchmarking calculations with spectroscopic accuracy of level energies and wavelengths in W LVII - W LXII tungsten ions
• Extended calculations of energy levels, radiative properties, and lifetimes for oxygen-like Mo XXXV
• Large-scale multiconfiguration Dirac-Hartree-Fock calculations for astrophysics: n=4 levels in P-like ions from Mn~XI to Ni~XIV
• Extended Calculations with Spectroscopic Accuracy: Energy Levels and Radiative Rates for O-like Ions between Ar XI and Cr XVII
• Extended calculations of energy levels, radiative properties, $A_J$, $B_J$ hyperfine interaction constants, and Landé $g_J$-factors for nitrogen-like \mbox{Ge XXVI}
• Energy Levels, Transition Rates and Electron Impact Excitation Rates for B-like Kr XXXII