ANALYSIS OF 6TH SPECTRUM OF BARIUM - BA-VI

The spectrum of barium was photographed in the 300 angstrom-1240 angstrom wavelength region on a 3-m normal incidence spectrograph at the Antigonish laboratory. The source used was a triggered spark. All five levels of the ground configuration 5s(2)5p3 and 42 of 44 levels of the 5s5p4 + 5s(2)5p(2)5d + 5s(2)5p(2)6s configurations of Ba VI have been established. One hundred and twenty-seven lines have been classified. The parametric least-squares-fitted calculations involving configuration interaction amongst even parity configurations were carried out to interpret the observed spectrum satisfactorily.