Hyperfine structure investigations of the odd-parity electronic levels of the terbium atom

Abstract

In the present work the hyperfine structure constants A and B were determined for 26 odd-parity energy levels of the terbium atom. Altogether 62 spectral lines in the spectral range between 483 - 538 nm were examined, using the method of laser induced fluorescence in a hollow cathode discharge lamp. All the results are presented for the first time. Additionally, the constants for 4 even-parity energy levels, previously reported by our research group, were reevaluated and slightly corrected.