Hyperfine structure measurements of93Nb

High-resolution laser spectroscopy of the hyperfine structure of high-lying levels of Nb i

“…The experimental hfs constants A and B compared to the different sources agree within the limit of error with our results. The hfs constants A and B of the level 4d 4 5s 4 D 3/2 at 8705.32 cm −1 are out of the error margin compared to [10], but our values agree with the values listed in [7,11]. Additionally, in tables 3 and 4 the calculated hfs constants A calc , which result from a parametric analysis of the hfs done in [12,13] and the difference between experimental and calculated values A is given.…”

“…Naturally occurring niobium (Nb) is a transition-metal and is composed of only one isotope with the odd mass number 93 and with a nuclear spin I = 9/2. Although the investigations of the hfs and fine structure constants of Nb have been the subject of several experimental studies [3,[6][7][8][9][10][11], parametric analysis of the data [12,13] has shown that there is still a lack of knowledge about the experimental hfs and fine structure constants of high-lying Nb levels. Because of the large nuclear magnetic dipole moment, µ I = 6.1705 (3) µ N [14] in many transitions, it is sufficient to apply Doppler-limited experimental techniques for an accurate determination of the magnetic dipole hfs constants A.…”

Hyperfine structure investigations of atomic niobium with optogalvanic and laser-induced fluorescence spectroscopy in the near-infrared wavelength range

“…t.w. : this work; (1) Fraenkel et al (1988); (2) Er et al (2011); (3) Bouzed et al (2003); (4) Başar et al (2008); (5) Kröger et al (2010). Notes.…”

“…For the low-lying energy levels hfs constants have been determined with very high accuracy using atomic-beam magnetic-resonance method by . Other high-resolution measurements have been made by Fraenkel et al (1988) using laser and radio-frequency spectroscopy, and by some of us (Başar et al 2008), using Doppler-reduced saturation absorption spectroscopy. Doppler-limited measurements of hfs constants have been made using Fourier transform spectroscopy (Kröger et al 2010;Er et al 2011) and Doppler-limited laser spectroscopic methods (Singh & Rao 1989;Singh et al 1992;Bouzed et al 2003;Kröger 2007).…”

Hyperfine structure measurements of neutral niobium with Fourier transform spectroscopy

“…The fine and hyperfine structure of atomic niobium has been the subject of several experimental and theoretical investigations (Başar et al 2008;Kröger 2007;Kröger et al 2007Kröger et al , 2004Bouzed et al 2003;Singh et al 1992;Singh & Rao 1989;Fraenkel et al 1988). All recent experimental work has been performed using laser spectroscopic methods, which are restricted in the wavelength range accessible to the cw-lasers currently in use.…”