New energy levels of atomic niobium (Nb I) discovered by laser-spectroscopic investigations

KROGER S., WINDHOLZ L., Başar G., Başar G.

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER, vol.212, pp.24-31, 2018 (SCI-Expanded) identifier identifier


We report the discovery of 9 previously unknown energy levels of the atomic niobium, all having even parity. Two levels have energies below 19,500 cm(-1) and angular momentum J=3/2, while the energies of the others are located between 39,700 and 43,420 cm(-1). The levels were discovered by laser excitation of several unclassified spectral lines in the wavelength range between 554 nm and 650 nm and detection of laser-induced fluorescence with a monochromator. (C) 2018 Elsevier Ltd. All rights reserved.