Accurate multiconfiguration calculations of energy levels, lifetimes and transition rates for the silicon isoelectronic sequence: Ti IX - Ge XIX, Sr XXV, Zr XXVII, Mo XXIX

Published

December 6, 2015

Author(s)

P. Jonsson, L Radziute, G. Gaigalas, M. Godefroid, J P. Marques, T Brage, Charlotte F. Fischer, I. P. Grant

Abstract

Multiconfiguration Dirac-Hartree-Fock (MCDHF) calculations and relativistic configuration interaction (RCI) calculations are performed for states of the 3s23p2, 3s3p3 and 3s23p3d configurations in the Si-like ions Ti IX - Ge XIX, Sr XXV, Zr XXVII, Mo XXIX. Valence and core-valence electron correlation e ects are accounted for through large configuration state function expansions. Calculated energy levels are compared with data from other calculations and with experimental data from the NIST database. Lifetime and transition rates along with uncertainty estimations are given for all ions. Energies from the calculations are in excellent agreement with observations and computed wavelength are almost of spectroscopic accuracy, aiding line identification in spectra.

Citation

Astronomy & Astrophysics

Pub Type

Journals

Keywords

excitation energies, transition rates, lifetimes, Si-like atoms, iron, density diagnostics

Citation

Jonsson, P. , Radziute, L. , Gaigalas, G. , Godefroid, M. , Marques, J. , Brage, T. , Fischer, C. and Grant, I. (2015), Accurate multiconfiguration calculations of energy levels, lifetimes and transition rates for the silicon isoelectronic sequence: Ti IX - Ge XIX, Sr XXV, Zr XXVII, Mo XXIX, Astronomy & Astrophysics (Accessed October 10, 2025)