INVESTIGATION OF THE PROPERTIES OF (3,3,3)TRIPLY EXCITED-STATES OF MULTICHARGED IONS

We study N4+(3, 3, 3) S-2(e,0) triply excited states. Two theoretical approaches are developed, a space partition approach and a stabilizati on procedure. Both procedures take advantage of an L(2) discretization of the spectrum which stems from the use of B-splines to build electr onic orbitals. The pertinence of the methods is analysed in view of th eir application to the case of multicharged ions, emphasis is put on t he role of the correlations. The resonance positions and widths are gi ven, these parameters are compared with other calculations. We also ca lculate the resonance parameters of the isoelectronic series (Z = 7 -- > 20).