Calculations of polarizabilities and hyperpolarizabilities for the Be${}^{+}$ ion

Li-Yan Tang, Jun-Yi Zhang, Zong-Chao Yan +3

The polarizabilities and hyperpolarizabilities of the Be${}^{+}$ ion in the $2^{2}S$ state and the $2^{2}P$ state are determined. Calculations are performed using two independent methods:…