Analysis of the sixth spectrum of cerium: CeVI

The spectrum of cerium was recorded in the 300-1240-Angstrom region on a 3- m spectrograph with a sliding spark and a triggered spark source. The 5s(2) 5p(5)-(5s(2)5p(4)5d + 5s(2)5p(6)6s) transitions of the sixth spectrum of ce rium (CE VI) were investigated, and 31 levels of even-parity configurations have been established. Forty-five lines are now classified in this spectru m. Least-squares fitting and Hartree-Fock calculations with relativistic co rrections were carried out for satisfactory interpretation of the spectrum. (C) 2000 Optical Society of America [S0740-3224(00)00812-2] OCIS codes: 30 0.2140, 300.6170, 300.6210, 300.6540.