Energy Levels, Transition Probabilities and Electron-Impact Excitations Of Ge-Like Pr, Nd, Pm, Sm and Eu ions

TL;DR

This study calculates energy levels, transition probabilities, and electron-impact excitation cross sections for Ge-like ions with Z=59-63 using relativistic methods, providing data for heavy ions relevant in plasma physics.

Contribution

It applies the fully relativistic MCDF method including QED effects to compute atomic data for heavy Ge-like ions, and compares results with other computational approaches.

Findings

Calculated energies and transition probabilities for specific ion transitions.

Electron-impact excitation cross sections obtained using plane-wave Born approximation.

Comparison of MCDF results with HFR method shows consistency and differences.

Abstract

Energies, wavelengths, transition probabilities, and oscillator strengths have been calculated for the 4s24p2-4s4p3, 4s24p2-4s24p4d and 4s4p3-4p4 allowed transitions in heavy Ge-like ions with Z=59-63. The fully relativistic Multiconfiguration Dirac-Fock (MCDF) method taking into account both the correlations within the n=4 complex and the quantum electrodynamic (QED) effects have been used in the calculations. MCDFGME code is used to calculate electron impact excitation cross sections for the 4s24p2-4s4p3 and 4s24p2-4s24p4d transitions with plane-wave Born approximation. The results of Pr XXVIII, Nd XXIX, Pm XXX, Sm XXXI and Eu XXXII are compared with HFR method results.