The Paschen-Back Effect of Hyperfine Structure II. Bi II and Bi III

Goudsmit and Bacher's theory is successfully applied to the spectra of Bi II and Bi III. The lines $\lambda \lambda 5719$ of Bi II and 4561 and 3695 of Bi III are used as typical examples of these spectra. $\lambda 5719$, like 3092 of Ti II, serves as an excellent check on the theory, because of its especially simple transition.