c © TÜBİTAK doi:10.3906/fiz-0809-3 Energy Levels of the 6p3/2ns, nd, ng Autoionizing Series

Based on the weakest bound electron potential model (WBEPM) theory, six energy levels of the autoion-izing Rydberg series 6pns 3/2[3/2]1 (n = 15–25), 6pns 3/2[3/2]2 (n = 15–25), 6pnd 3/2[3/2]1 (n = 13–25), 6pnd 3/2[5/2]3 (n = 13–25), 6pnd 3/2[7/2]3 (n = 14–25) and 6png 3/2[5/2]2(n = 5–25) of Pb I are calculated. Foreign level perturbation corrections are taken into account in calculations of four series among them. The theoretical calculated results are in good agreement with the known experimental data, and some energies without experimental values are predicted