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arXiv · 1407.1860

Sensitivity coefficients to $α$-variation for astrophysically relevant transitions in Ni II

E. A. Konovalova·M. G. Kozlov·R. T. Imanbaeva
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Abstract

We calculated the dependence of the transition frequencies on the fine-structure constant $α$ ($q$-factors) for Ni~II. Nickel is one of the few elements with high sensitivity to $α$-variation, whose lines are observed at high redshifts. This makes it a sensitive probe for $α$-variation on the cosmological timescale. The electronic structure of Ni II ion was treated within the configuration interaction (CI) method using Dirac-Coulomb Hamiltonian.

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E. A. Konovalova, M. G. Kozlov, R. T. Imanbaeva. 2014-09-11. Sensitivity coefficients to $α$-variation for astrophysically relevant transitions in Ni II. https://doi.org/10.1103/physreva.90.042512

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