Abstract

We report the discovery of 23 new energy levels of even parity and 21 new energy levels of odd parity of the tantalum atom. The results given here are based on investigations of the hyperfine structure of 221 new spectral lines of the tantalum atom (Ta I) by means of laser spectroscopic methods, detecting laser-induced fluorescence. The excitation wavelengths were extracted from high-resolution Fourier transform spectra.

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