The seventh spectrum of platinum (Pt VII): Analysis of the (5d4+5d36s)-5d36p transition array

The spectrum of platinum was observed in the (300-2100) Å wavelength region. The (5d4+5d36s)-5d36p transition array of six times ionized platinum, Pt VII, has been investigated and 759 spectral lines have been classified in the region of (337-1273) Å. The analysis has led to the determination of the 5d4, 5d36s and 5d36p configurations. All 34 theoretically possible 5d4 levels, 35 of 38 possible 5d36s levels and 108 of 110 possible 5d36p levels have been established. The orthogonal operators technique was used to calculate the level structure and transition probabilities. The energy parameters have been determined by the least squares fit to the observed levels. Calculated transition probability and energy values, as well as LS-compositions obtained from the fitted parameters are presented.