We report the first detection of elements at all three r-process peaks in the metal-poor halo
star HD 160617. These elements include arsenic and selenium, which have not been …

In this paper, we study electron correlation and Gaunt interaction effects in ionization
potentials (IPs) and hyperfine constants A of 2 p 2 P 1/2 and 2 p 2 P 3/2 states along with …

The accurate calculation of hyperfine-coupling tensors requires a good description of the
electronic spin density, especially close to and at the nucleus. Thus, dynamic correlation as …

Regarding microwave frequency standards based on trapped ions, we report on the
determination of the hyperfine splittings and the Landé g J factors of Cd+ 111, 113. The …

Roles of electron correlation effects in the determination of attachment energies, magnetic-
dipole hyperfine-structure constants, and electric-dipole (E 1) matrix elements of the low …

This work presents accurate ab initio investigations of various spectroscopic properties of a
few Li-like ions in the presence of a plasma environment within the Debye screening …

Electron-correlation study of Y iii-Tc vii ions using a relativistic coupled-cluster theory -
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We have developed a microwave frequency standard based on the 15.2 GHz ground-stated
hyperfine transition of^ 113Cd^+ ions. Using a laser-cooled ion cloud trapped in a linear …

This work presents precise calculations of important electromagnetic transition amplitudes
along with details of their many-body correlations using the relativistic coupled-cluster …

In this paper, we present ionization potentials, excitation energies, fine-structure splittings,
and allowed and forbidden transition amplitudes of five-times-ionized chromium ion as …