Abstract

It is demonstrated that high-resolution measurements of the hyperfine structure of unclassified spectral lines can be used in many cases to establish uniquely the classification of the lines if the structure of the low levels of the atom is already well understood. Examination of nine lines in Tb i confirms the previous classification in six cases, requires some modification of the previous assignment in one case, and gives the classification for two previously unassigned lines. One of the newly classified lines (λ5795.64) is the first line found between 4338 and 10 239 Å to connect with the Tb i atomic ground state. The Doppler-free laser-atomic-beam technique was used for the study. New hfs results are given for two even levels and eight odd levels of Tb i.

© 1979 Optical Society of America

New line classifications in Ho i based on high-precision hyperfine-structure measurement of low levels

W. J. Childs, David R. Cok, and L. S. Goodman
J. Opt. Soc. Am. 73(2) 151-155 (1983)

Hyperfine structure measurements of high-lying levels of uranium

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Hyperfine-structure and isotope-shift measurements on Dy i λ5988. 562 using high-resolution laser spectroscopy and an atomic beam*

W. J. Childs and L. S. Goodman
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Complete resolution of hyperfine structure in the close doublet λ5930.6 of ¹³⁹La by laser-atomic-beam spectroscopy*

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