Calculation of the hyperfine constants for the low-lying excited S-2 states of the lithium atom

摘要

Hylleraas-type calculations of the hyperfine constants for the four lowest excited 3 S-2, 4 S-2, 5 S-2, and 6 S-2 states of the lithium atom are reported. Hyperfine constants are determined for the stable isotopes Li-6 and Li-7 and for the unstable isotopes Li-8, Li-9, and Li-11 for each state. Finite-nuclear-mass, lowest-order relativistic, quantum electrodynamic, Bohr-Weisskopf, Breit-Rosenthal, and Sushkov corrections are incorporated.