Energy levels and radiative rates for Cr-like Cu VI and Zn VII

TL;DR

This paper reports calculated energy levels and radiative rates for Cr-like Cu VI and Zn VII ions using a quasi-relativistic approach with extensive configuration interaction, providing data crucial for spectroscopic and plasma modeling.

Contribution

It presents the first comprehensive set of radiative rates and energy levels for Cu VI and Zn VII ions using a large-scale quasi-relativistic calculation with extensive configuration interaction.

Findings

Calculated energies closely match NIST data.

Radiative rates for all significant transitions are provided.

Lifetimes derived from A-values are included.

Abstract

Energy levels and radiative rates (A-values) for transitions in Cr-like Cu~VI and Zn~VII are reported. These data are determined in the quasi-relativistic approach (QR), by employing a very large {\em configuration interaction} (CI) expansion which is highly important for these ions. No radiative rates are available in the literature to compare with our results, but our calculated energies are in close agreement with those compiled by NIST and other available theoretical data, for a majority of the levels. The A-values (and resultant lifetimes) are listed for all significantly contributing E1, E2 and M1 radiative transitions among the energetically lowest 322 levels of each ion.