Abstract

Screening parameters obtained by Froese [ Can. J. Phys. 41, 51 ( 1963)] from Hartree–Fock calculations are used in the usual one-electron term-interval formula to predict values of splitting that become more accurate as Z increases. The ratio of observed splitting to calculated splitting is studied to give information on the behavior of the observed values; some discrepancies are found, for example, in the n²D intervals of Na ix and Mg x in the Li i sequence. For other deviations, the possibility of configuration interactions is explored. Some possible coronal uv wavelengths arising from the B i sequence are also given: the Fe xxii line predicted near 844 Å may have been observed recently.

© 1971 Optical Society of America

Energy Levels and Transition Probabilities for Highly Ionized Atoms in the B i Isoelectronic Sequence

L. J. Shamey
J. Opt. Soc. Am. 61(7) 942-946 (1971)

Spectra of Fe, Co, Ni, and Cu Isoelectronic with Na i and Mg i

U. Feldman, L. Katz, W. Behring, and L. Cohen
J. Opt. Soc. Am. 61(1) 91-95 (1971)

Energy Differences between Two Spectroscopic Systems in Neutral, Singly Ionized, and Doubly Ionized Lanthanide Atoms

W. C. Martin
J. Opt. Soc. Am. 61(12) 1682-1686 (1971)

One-Electron Spectrum of Doubly Ionized Lutetium (Lu iii) and Nuclear Magnetic Dipole Moment of ¹⁷⁵Lu

Victor Kaufman and Jack Sugar
J. Opt. Soc. Am. 61(12) 1693-1698 (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)