Extended Calculations of Spectroscopic Data: Energy Levels, Lifetimes and Transition rates for O-like ions from Cr XVII to Zn XXIII

Abstract

Employing two state-of-the-art methods, multiconfiguration Dirac--Hartree--Fock and second-order many-body perturbation theory, the excitation energies and lifetimes for the lowest 200 states of the $2s^{2}2p^4$, $2s2p^5$, $2p^6$, $2s^{2}2p^{3}3s$, $2s^{2}2p^{3}3p$, $2s^{2}2p^{3}3d$, $2s2p^{4}3s$, $2s2p^{4}3p$, and $2s2p^{4}3d$ configurations, and multipole (electric dipole (E1), magnetic dipole (M1), and electric quadrupole (E2)) transition rates, line strengths, and oscillator strengths among these states are calculated for each O-like ion from Cr XVII to Zn XXIII. Our two data sets are compared with the NIST and CHIANTI compiled values, and previous calculations. The data are accurate enough for identification and deblending of new emission lines from the sun and other astrophysical sources. The amount of data of high accuracy is significantly increased for the $n=3$ states of several O-like ions of astrophysics interest, where experimental data are very scarce.

References in corpus (9)

• CHIANTI - An atomic database for Emission Lines. Version 8
• High Resolution X-Ray Spectra of Capella: Initial Results from the Chandra High Energy Transmission Grating Spectrometer
• X-ray spectroscopy of NGC 5548
• The Chandra Iron-L X-Ray Line Spectrum of Capella
• Spectroscopic LSJ notation for atomic levels obtained from relativistic calculations
• X-ray Spectroscopy of the Core of the Perseus Cluster with Suzaku: Elemental Abundances in the Intracluster Medium
• Extended relativistic configuration interaction and many-body perturbation calculations of spectroscopic data for the $n\le 6$ configurationsin ne-like ions between Cr XV and Kr XXVII
• Thermodynamic Spectrum of Solar Flares Based on SDO/EVE Observations: Techniques and Statistical Results
• The X-ray spectrum of delta Orionis observed by LETGS aboard Chandra

Cited by in corpus (10)

• Solar UV and X-Ray Spectral Diagnostics
• Large-scale multiconfiguration Dirac-Hartree-Fock calculations for astrophysics: Cl-like ions from Cr~VIII to Zn~XIV
• Energy Levels, Lifetimes and Transition rates for P-like ions from Cr X to Zn XVI from large-scale Relativistic Multiconfiguration Calculations
• Benchmarking Atomic Data for Astrophysics: Be-like Ions between B II and Ne VII
• 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}
• R-matrix electron-impact excitation data for the O-like iso-electronic sequence