Optical absorption and fluorescence properties of trivalent lanthanide chlorides in high temperature molten LiCl-KCl eutectic

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The absorption and fluorescence spectroscopic properties of all series of lanthanide elements (La, Ce, (...), Yb, Lu) were investigated in high temperature molten LiCl-KCl eutectic. Based on absorption spectra, the molar absorptivities for major absorption bands of lanthanides (Ln) were determined by analyzing the calibration curves at various concentrations. Moreover, the nephelauxetic parameters, beta, for lanthanides in molten LiCl-KCl salt were evaluated by comparing those for aqueous lanthanide ions. In addition, fluorescence spectra and lifetimes of lanthanide elements were obtained at various Ln(III) concentrations, and this is the first to systematically present fluorescence spectroscopic properties of the whole lanthanide elements in high temperature molten LiCl-KCl salt. Such absorption and fluorescence spectra can provide a fundamental basis for the understanding and development of various pyrochemical processes in molten LiCl-KCl eutectic. (C) 2016 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2016-10
Language
English
Article Type
Article
Keywords

ELECTRONIC-ENERGY LEVELS; AQUO IONS; HYPERSENSITIVE TRANSITIONS; ELECTROCHEMICAL-BEHAVIOR; THERMODYNAMIC PROPERTIES; SPECTROSCOPIC PROPERTIES; OXYFLUOROBORATE GLASS; VIBRATIONAL-MODES; LITHIUM FLUORIDE; AL ELECTRODES

Citation

JOURNAL OF LUMINESCENCE, v.178, pp.331 - 339

ISSN
0022-2313
DOI
10.1016/j.jlumin.2016.06.010
URI
http://hdl.handle.net/10203/213022
Appears in Collection
NE-Journal Papers(저널논문)
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