ENERGY-LEVEL SPLITTING IN ANTIPROTONIC HELIUM-ATOMS

Recent experiments on the laser-induced resonant annihilation provide a precise measurement of transition energies of antiprotonic helium at oms. Relativistic corrections on the order of alpha(2) to the pure Cou lomb interaction will be taken into account in the theoretical descrip tion of energy spectra of antiprotonic helium atoms. The splitting of energy levels arising due to the spin-dependent part of the relativist ic interaction is considered for a number of states of (3,4)<He(p)over bar e> systems.