Hyperfine splitting of low-lying levels in heavy Li-like ions

The magnetic dipole and the electric quadrupole hyperfine splitting in heavy Li-like ions is calculated for the (1S)(2)2p(1/2) and (1S)(2)(2p3/2) states. The numerical results include the one-electron contributions as well as the interelectronic-interaction correction of order 1/Z, calculated within a rigorous QED approach. Total hyperfine splitting energies are presented for heavy Li-like ions in the range Z = 49-83.