Abstract
The spectral of the rare earths have been photographed under controlled excitation so that either the spectra of the doubly or triply ionized elements are brought out with maximum intensity. A mild excitation is used in addition to give the first and second spectra for comparison. Some regularities are immediately apparent and vary very gradually through the rare-earth group. The general features of the spectra are discussed in this paper.
© 1961 Optical Society of America
Full Article | PDF ArticleMore Like This
G. H. Dieke and H. M. Crosswhite
Appl. Opt. 2(7) 675-686 (1963)
B. W. Bryant
J. Opt. Soc. Am. 55(7) 771-779 (1965)
Jack Sugar
J. Opt. Soc. Am. 55(9) 1058-1059 (1965)