THE ANALYSIS OF THE 5D(3)-5D(2)6P TRANSITIONS OF IR-VII

The spectra of different ions of iridium were photographed on a 3-m no rmal incidence spectrograph at the Antigonish laboratory in the 300-21 00 Angstrom wavelength region using a triggered spark source. The 5d(3 )-5-5d(2)6p transitions of Ir VII were investigated All 19 levels of t he ground state and 44 out of 45 levels of the 5d(2)6p configuration h ave been established. 204 lines have been classified in 375-575 Angstr om region. Hartree-Fock (HF) and least-square-fitting (LSF) parametric calculations interpret the observed spectrum satisfactorily.