Accurate nonrelativistic energies for 2Pe states of the Li isoelectronic series

Highly accurate upper bounds for several ²P^e states of the Li isoelectronic series obtained by extensive Hylleraas-Cl calculations are given. The best value for the 2²P^e state (1s2p²) of Li is −5.2137392₀ au. The evaluation of the occurring integrals is given explicitly. Additionally, we present some expectation values and isotope energies of the Li isoelectronic series. © 1997 John Wiley & Sons, Inc.