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Title: Luminescence properties of Ce3+ and Eu2+ in fluorites and apatites
Authors: Bodył, Sabina
Keywords: fluorite; apatite; REE; luminescence
Issue Date: 2009
Citation: Mineralogia, Vol. 40, iss. 1 (2009), s. 85-94
Abstract: Natural samples of fluorite and apatite from granites, pegmatites, carbonatites and andesitic tuffs were investigated by steady-time spectroscopy to characterize the luminescence properties of Ce3+ and Eu 2+. The luminescence of Ce3+ has been clearly seen in fluorite as 320 and 337 or 343 nm bands. In apatites, two distinct bands for two different Ca crystal sites were obtained: 340-380 nm for Ca(1) and 420-450 nm for Ca(2). The luminescence spectra of Eu2+ in the fluorite crystals were measured even at for low concentration of this element (0.11 ppm). For Ce3+, it has been showed that the crystal field strength depends more on the nature of the ligand than on the Me-ligand distances.
DOI: 10.2478/v10002-009-0007-y
ISSN: 1899-8291
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