Radiative decay into the ground state of highly excited ions of neon isoelectronic series

Rates of first 14 dipole-permitted transitions in the main state: 1s22s22p6-1s22s22p53s, 3d, 4s, 4d; 1s22s22p6-1s22s2p63p, 4p in Ne-similar ions are calculated on the basis of quantum-electrodynamic theory perturbations with model neutral approximation. The effect of strong interaction of levels closely placed is analysed. It leads to sharp redistribution of oscillator forces. It is shown that the rates of radiation decay as a function of nucleus charge at points of level approximation can have large extrema