Critically Evaluated Energy Levels and Spectral Lines of Singly Ionized Indium (In II)

• Published in: Journal of research of the National Institute of Standards and Technology Vol. 118; no. 1; pp. 52 - 104
• Main Author: Kramida, A
• Format: Journal Article
• Language: English
• Published: United States National Institute of Standards and Technology 2013; Superintendent of Documents; National Institute of Standards (NIST); [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology
• Subjects: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; atomic energy levels; Atoms & subatomic particles; CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Energy levels; Fittings; Force and energy; Fourier transforms; Ground state; Hyperfine structure; Indium; instruments & instrumentation; Ionization; ionization potentials; Measurement; physics; Properties; singly ionized indium; Spectra; spectral lines; Studies; transition probabilities; Uncertainty; Wavelength; Wavelengths; United States; ionization potentials; transition probabilities; atomic energy levels; hyperfine structure; singly ionized indium; spectral lines
• ISSN: 1044-677X; 2165-7254; 2165-7254
• DOI: 10.6028/jres.118.004

A comprehensive list of the best measured wavelengths in the In II spectrum has been compiled. Uncertainties of the wavelength measurements have been analyzed, and existing inconsistencies have been resolved. An optimized set of fine-structure energy levels that fits all observed wavelengths has been derived. Uncertainties of the energy level values have been reduced by an order of magnitude. An improved value of the ionization limit of In II has been determined by fitting quantum-defect and polarization formulas for several series of levels. Intensities of lines observed by different authors have been analyzed and converted to a uniform scale. A set of recommended values of radiative transition rates has been critically compiled, and uncertainties of these rates have been estimated. The hyperfine structure interval in the 5s (2)S ground state of In III has been determined from the measurements of the 5sng and 5snh series in In II.