ANALYSIS OF THE SPECTRUM OF THE (5D(5)-(5D(4)6P+5D(3)6S6P) SYSTEM OF TRIPLY IONIZED OSMIUM (OS-IV)(5D(4)6S))

The spectrum of osmium was photographed in the 225-2100 Angstrom regio n on a 3-m normal incidence spectrograph using a triggered spark light source and on a 10-m normal incidence spectrograph using a sliding sp ark source. The (5d(5) + 5d(4)6s)-(5d(4)6p + 5d(3)6s6p) transition arr ays of Os TV were investigated and 934 lines were classified between 7 05 Angstrom and 1995 Angstrom. The analysis has resulted in the determ ination of 61 levels in the (5d(5) + 5d(4)6s) even system and of 124 l evels in the 5d(4)6p configuration. Five levels of the 5d(3)6s6p confi guration were also identified. The energy levels and their eigenvector compositions have been described by means of the orthogonal operator technique. The 2-particle magnetic operators of the dp-type are compar ed with values obtained in other spectra. Accurate weighted transition probabilities (gA-values) calculated by means of orthogonal operators are also presented.