No abstract

A thick Mg target was bombarded by a 21-MeV oxygen-ion beam. Nine 1s-2p transitions were observed with an energy resolution of 1.26 eV. with Hartree-Fock-Slater calculations, the five groups of peaks were found to correspond to 1s-2p (Ko.) transitions with initial configurations (1s) (2p)~for n= 0, 1, 2, 3, and 4. The transition for the (1s) (2p) initial configuration was not observed in this experiment. This can be attributed to self-absorption in the target since the (1s) (2p) K& transition energy lies above the K absorption edge.