THE 4P(5)RD(10) AND 4D(8)6P CONFIGURATIONS OF TE-VIII

The spectrum of tellurium was photographed in the 100-500 Angstrom reg ion on a variety of grazing incidence spectrographs using a triggered spark source. The analysis of the lines in the 117-216 Angstrom region has lead to establishing 42 out of 45 levels of the 4d(8)6p configura tion of Te VIIL Four levels of the 4d(8)4f configuration were confirme d and their level values revised, and an additional 4d(8)4f level was established. The 4p(5)4d(10) levels reported earlier were found to be erroneous and new values have been found for them. Eighty seven (87) n ew lines have been classified in the (4d(9) + 4d(8)5s)-(4d(8)4f + 4p(5 )4d(10) + 4d(8)6p) transition array. Hartree-Fock with relativistic co rrections (HFR) and parametric least-squares-fitted (ISF) calculations were carried out to interpret the present analysis adequately.