Relativistic ab initio study of forbidden transitions of singly ionized Zinc using CCSD(T)

TL;DR

This paper presents relativistic ab initio calculations of forbidden electromagnetic transitions in singly ionized zinc, providing new oscillator strength data crucial for astrophysical research.

Contribution

The study introduces the first estimates of oscillator strengths for magnetic dipole and electric quadrupole transitions in Zn II using relativistic coupled-cluster theory.

Findings

Calculated ionization potentials agree with experimental data.

Oscillator strengths for forbidden transitions are reported for the first time.

Transitions cover ultraviolet to near-infrared regions.

Abstract

In this work, the {\it ab initio} calculations have been carried out to study the oscillator strengths corresponding to `forbidden transitions' of astrophysically important electromagnetic transitions of singly ionized zinc, Zn II. Many important electron correlations are considered to all-orders using the relativistic coupled-cluster theory. Calculated ionization potentials are compared with the experimental values, wherever available. To our knowledge, oscillator strengths of magnetic dipole and electric quardupole transitions are estimated for the first time. The transitions span in the range of ultraviolet, visible, and near infrared regions and are important for astrophysical observations.