Atomic properties and transition parameters of highly charged Sb-like isoelectronic ions

Abstract

The atomic properties and transition parameters of Sb-like Cs4+, Ba5+, La6+, Ce7+, Pr8+, Nd9+, Pm10+, and Sm11+ ions were first calculated using the GRASP2K package. This method is based on the multi-configuration Dirac–Hartree–Fock (MCDHF) method. In this calculation, the contributions of Breit and QED corrections were taken into consideration. By comparison, our results were in good agreement with the NIST values for Cs4+ and Ba5+, which revealed that our calculations are dependable. Meanwhile, it also showed that these ions have high sensitivity to the fine-structure constant α and long-lived metastable states. In particular, Pm10+ and Sm11+ had very long-lived metastable states with transitions within the optical transition. These ions are useful for the research of ultra-accurate atomic clocks and fundamental physics.