Abstract
We calculated the dependence of the transition frequencies on the fine-structure constant ( factors) for Ni ii. Nickel is one of the few elements with high sensitivity to variation, whose lines are observed at high redshifts. This makes it a sensitive probe for variation on the cosmological time scale. The electronic structure of Ni ii ion was treated within the configuration interaction method using the Dirac-Coulomb Hamiltonian.
- Received 27 August 2014
DOI:https://doi.org/10.1103/PhysRevA.90.042512
©2014 American Physical Society