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Revised and Extended Analysis of Eight-times Ionized Barium: Ba IX and Nine-times Ionized Barium: Ba X

2000; IOP Publishing; Volume: 62; Issue: 4 Linguagem: Inglês

10.1238/physica.regular.062a00282

1402-4896

S S Churilov, Y N Joshi,

Mass Spectrometry Techniques and Applications

The spectra of barium were recorded in the 100 Å–1250 Å region on a variety of normal and grazing incidence spectrographs. The sources used were conventional triggered sparks and laser produced plasma. Eight-times and nine-times ionized barium spectra (Ba IX and Ba X) were investigated. In the Ba IX spectrum fifty-four levels were established out of which thirty-eight levels are new. One hundred and ten lines have been classified of which 88 lines are new. Relativistic Hartree Fock (HFR) and least-squares-fitted (LSF) calculations were carried out to interpret the spectrum satisfactorily. In Ba X spectra twenty eight levels have been established out of which ten are new levels. Thirty one lines are now classified in Ba X out of which eight lines are new.