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Atoms 2018, 6(3), 52; https://doi.org/10.3390/atoms6030052

Parametric Calculations of Radiative Decay Rates for Magnetic Dipole and Electric Quadrupole Transitions in Tm IV, Yb V, and Er IV

1
LERMA, Observatoire de Paris-Meudon, PSL Research University, CNRS UMR8112, Sorbonne Université, F-92195 Meudon, France
2
Laboratoire Aimé Cotton, CNRS UMR9188, Univ Paris-Sud, ENS Cachan, Univ Paris-Saclay, bâtiment 505, F-91405 Orsay CEDEX, France
3
Laboratoire de Physique et Chimie Quantique, Université Mouloud Mammeri, BP 17 RP, 15000 Tizi-Ouzou, Algeria
4
Université d’Alger 1—Benyoucef Benkhedda, 2 Rue Didouche Mourad, Alger 16000, Algeria
*
Author to whom correspondence should be addressed.
Received: 18 August 2018 / Revised: 7 September 2018 / Accepted: 9 September 2018 / Published: 12 September 2018
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Abstract

Semi-empirical transition probabilities for magnetic dipole (M1) and electric quadrupole (E2) emission lines have been derived from parametric studies of experimental energy levels in Tm3+ (Tm IV), Yb4+ (Yb V), and Er3+ (Er IV), using Cowan codes. Results are compared with those existing from ab initio calculations or from more sophisticated semi-empirical calculations. Satisfactory agreements show that simple parametric calculations can provide good predictions on line intensities, provided that experimental levels are available, allowing reliable fits of energy parameters. View Full-Text
Keywords: atomic spectra; transition probabilities; lanthanide ions; parametric calculations atomic spectra; transition probabilities; lanthanide ions; parametric calculations
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Tchang-Brillet, W.-Ü.L.; Wyart, J.-F.; Meftah, A.; Ait Mammar, S. Parametric Calculations of Radiative Decay Rates for Magnetic Dipole and Electric Quadrupole Transitions in Tm IV, Yb V, and Er IV. Atoms 2018, 6, 52.

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