Relativistic coupled-cluster studies of ionization potentials, lifetimes and polarizabilities in singly ionized calcium

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Sahoo, B. K.
Das, B. P.
Mukherjee, D.
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Abstract
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Using the relativistic coupled-cluster method, we have calculated ionization potentials, E1 matrix elements and dipole polarizabilities of many low-lying states of Ca$^+$. Contributions from the Breit interaction are given explicitly for these properties. Polarizabilities of the ground and the first excited d-states are determined by evaluating the wave functions that are perturbed to first order by the electric dipole operator and the black-body radiation shifts are estimated from these results. We also report the results of branching ratios and lifetimes of the first excited p-states using both the calculated and experimental wavelengths and compare them with their measured values.
Comment: 10 pages, 1 figure
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Physics - Atomic Physics, Physics - Chemical Physics
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