Transition probabilities and lifetimes of the low-lying levels of Fe XIV

Abstract

The multi-configuration Dirac-Fock method is employed to calculate the transition energies, probabilities, and oscillator strengths for electric dipole allowed (E1) and forbidden (M1, E2, M2) lines for the 3s23p, 3s3p2, 3s23d, 3p3, and 3s3p3d configurations of Fe XIV. The lifetimes of all 40 levels of these low-lying configurations are also derived. The valence-valence and core-valence correlation effects are accounted for in a systematic way. Breit interactions and quantum electrodynamics (QED) effects are estimated in subsequent relativistic configuration interaction (CI) calculations. The present results are in good agreement with other available theoretical and experimental values, and therefore can be used for the further astrophysical investigations.

Correlation effects on the fine-structure splitting within the 3d 9 ground configuration in highly-charged Co-like ions

“…[1][2][3][4] Among them the electric-dipole forbidden transition lines are of particular importance in plasma diagnostics due to their sensitive intensities to electron temperature and density and other plasma parameters. [5][6][7][8][9][10][11] The currently famous elements (for example, tungsten and gold) have inspired great research interest since their favorable physical properties, and many spectra lines have been measured with high accuracy. [12][13][14][15][16][17][18][19][20][21][22] Meanwhile, the accurately measured properties, such as wavelength, can provide crucial tests for atomic structure theory of both the electron correlation and relativistic corrections, [23,24] which are the major questions in theoretical calculations.…”