Theoretical investigations on resonance transitions in the neon- and nickel-like ions and their satellites

The resonance lines of neon-like ions and their long-wavelength satellites emitted by ions of lower charge are interpreted by means of the relativistic parametric potential method. The transition arrays between sub-configurations with the same angular momentum of the 2p5 core and two or three n=3 electrons added are predicted ab initio in the UTA formalism and fit the experimental data from barium to praseodymium. A spectrum of laser-irradiated silver recorded by Gauthier, Geindre and Monier at GRECO-ILM facilities is shown with detailed identification of Ag XXXVIII and Ag XXXVII transitions from 3.2 to 4.2 Angstrom. The electric-quadrupole transitions 2s-3d in the neon sequence and 3p-4f in the nickel sequence have been observed in laser-produced plasmas and open the way to new diagnostics