Abstract

Ninety new line classifications and 70 new energy levels have been determined in the B i-like spectra, Mg viii, Al ix, and Si x. The results presented here extend the previous studies of Söderqvist and Ferner to the higher series members. Both doublet and quartet lines are observed but no intercombination lines were found. These lines lie between 30 and 70 Å. For Si x, seven lines from 250 to 290 Å, which have been previously seen in the sun, were measured to permit a more precise determination of the positions of the low-lying levels previously found.

© 1971 Optical Society of America

Spectra of Mg ix, Al x, and Si xi Isoelectronic with Be i

S. Hoory, U. Feldman, S. Goldsmith, W. Behring, and L. Cohen
J. Opt. Soc. Am. 60(11) 1449-1453 (1970)

Extreme-Ultraviolet Spectra of Sc xiv, Ti xv, and V xvi

S. Goldsmith, U. Feldman, and L. Cohen
J. Opt. Soc. Am. 61(5) 615-618 (1971)

Classification of Transitions in the euv Spectra of Y ix–xiii, Zr x–xiv, Nb xi–xv, and Mo xii–xvi*

E. Alexander, M. Even-Zohar, B. S. Fraenkel, and S. Goldsmith
J. Opt. Soc. Am. 61(4) 508-514 (1971)

Analysis of the spectrum of quadruply ionized aluminum (Al v)

Marie-Christine Artru and Wan-Ü Lydia Brillet
J. Opt. Soc. Am. 64(8) 1063-1071 (1974)

Lithium-Like Spectra in Mg, Al, and Si

Uri Feldman, Leonard Cohen, and William Behring
J. Opt. Soc. Am. 60(7) 891-893 (1970)