# Role of triple excitations in calculating different properties of Ba+

@article{Porsev2021RoleOT, title={Role of triple excitations in calculating different properties of Ba+}, author={Sergey G. Porsev and Marianna S. Safronova}, journal={Physical Review A}, year={2021}, volume={103} }

We carried out calculations of the energies, hyperfine structure constants and electric-dipole transiton amplitudes for the low-lying states of Ba+ in the framework of the relativistic linearized coupled-cluster single double (LCCSD) and coupled-cluster single double (valence) triple (CCSDvT) methods. Taking into account that an iterative inclusion of the valence triples into consideration is a complicated and computationally demanding process we study the effects of computational restriction…

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