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Laser-induced time-resolved luminescence of rare-earth elements in scheelite

Published online by Cambridge University Press:  05 July 2018

M. Gaft ,
G. Panczer ,
E. Uspensky  and
R. Reisfeld
M. Gaft
Affiliation:
Department of Natural Sciences, The Open University of Israel, 16 Klausner St., 61392 Tel-Aviv, Israel
G. Panczer
Affiliation:
Lab. de Physico-Chimie des Matériaux Luminescents, Université Claude Bernard - Lyon 1, UMR 5620 CNRS, 43 Bd. du 11 November 1918, 69622 Villeurbanne, France
E. Uspensky
Affiliation:
IGEM of Russian Academy of Sciences, Staromonetny Per. 35, Moscow, 109017, Russia
R. Reisfeld
Affiliation:
Department of Inorganic and Analytical Chemistry, 91940 Jerusalem, Israel
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Abstract

Natural and synthetic scheelite are investigated by time-resolved laser-induced luminescence to detect and ascribe various luminescence lines to a variety of REE. The selectivity of detection is possible by using different time delays after excitation, different gate widths and different excitation wavenumbers and allowed to detect REE in samples where they are hidden by intrinsic luminescence and not visible in the steady-state spectra as well as by cathodoluminescenee. Luminescence of Pr3+, Er3+ and Tm3+ are detected even with low concentrations and in the presence of Tb3+, Dy3+ and Sm3+. Luminescence of Ho3+ and Yb3+ is firstly detected in natural scheelites and luminescence of Eu2+ and Ce3+ is preliminary suggested.

Keywords

scheelitetime-resolved luminescenceREE
Type
Research Article
Information
Mineralogical Magazine , Volume 63 , Issue 2 , April 1999 , pp. 199 - 210
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1999 

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References

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