Abstract

The emission spectrum of doubly ionized holmium was photographed and measured over the region 1900 Å–11 000 Å. A partial analysis of this spectrum was undertaken which resulted in the determination of 42 energy levels of the 4f¹¹, 4f¹⁰5d, 4f¹⁰6s, and 4f¹⁰6p configurations.

© 1967 Optical Society of America

Spectrum of Sm iii*

André Dupont
J. Opt. Soc. Am. 57(7) 867-869 (1967)

Spectrum of Doubly Ionized Lanthanum (La iii)*

Halis Odabasi
J. Opt. Soc. Am. 57(12) 1459-1463 (1967)

Spectrum of Doubly Ionized Gadolinium*

Wm. R. Callahan
J. Opt. Soc. Am. 53(6) 695-700 (1963)

Preliminary Analysis of the Spectrum of Triply Ionized Gadolinium (Gd iv)*

J. F. Kielkopf and H. M. Crosswhite
J. Opt. Soc. Am. 60(3) 347-351 (1970)

Spectra of Doubly and Triply Ionized Ytterbium, Yb iii and Yb iv†

B. W. Bryant
J. Opt. Soc. Am. 55(7) 771-779 (1965)