Investigation of the Hyperfine Structure of Atomic Niobium (Nb I) Spectral Lines Based on the Lower Energy Levels at 22936, 23010, and 23048 cm-1
Open Access
- 1 January 2018
- journal article
- research article
- Published by Scientific Research Publishing, Inc. in Spectral Analysis Review
- Vol. 06 (02), 43-52
- https://doi.org/10.4236/sar.2018.62004
Abstract
The hyperfine (hf) structure constants of three atomic niobuim energy levels in the energy range around 23000 cm-1 (at 22936.90, 23010.58, and 23048.58 cm-1) are known with only limited accuracy, and the constants of combining levels are sometimes even unknown. Thus we performed laser spectroscopic investigations in the wavelength range between 5600 and 6500 Å, and we excited altogether 16 transitions in which these lower levels are involved. Beside a more precise determination of the hf structure constants of the three lower levels (which were determined on several lines sharing a common upper level), these experiments led to the knowledge of the hf constants of nine levels with previously unknown constants. Beside these results, also the hf constants of 13 further energy levels are reported. For six of these levels, the constants were previously unknown.Keywords
This publication has 21 references indexed in Scilit:
- Hyperfine structure study of atomic niobium with enhanced sensitivity of Fourier transform spectroscopyJournal of Physics B: Atomic, Molecular and Optical Physics, 2011
- Hyperfine structure measurements of neutral niobium with Fourier transform spectroscopyAstronomy & Astrophysics, 2010
- High-resolution laser spectroscopy of the hyperfine structure of high-lying levels of Nb iPhysica Scripta, 2008
- Further experimental investigation of the hyperfine structure in the spectrum of atomic niobiumThe European Physical Journal D, 2006
- New and revised energy levels of atomic niobiumEurophysics Letters, 2004
- Classification of Spectral Lines by Means of their Hyperfine Structure. Application to Ta I and Ta II LevelsPhysica Scripta, 2003
- Hyperfine-structure studies of ^93Nb by laser optogalvanic spectroscopyJournal of the Optical Society of America B, 1992
- Hyperfine structure studies of niobium using laser Optogalvanic Spectroscopy.Physica Scripta, 1989
- Hyperfine structure measurements of93NbThe European Physical Journal D, 1988
- Hyperfine structure of nine levels in two configurations of93NbZeitschrift für Physik A Atoms and Nuclei, 1975