The nature of red luminescence of natural benitoite BaTiSi3O9 |
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| Authors: | M Gaft L Nagli G Waychunas G Panczer |
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| Institution: | (1) Laser Detection Systems (LDS), Rishon-Lezion, and The Open University of Israel, Raanana, Israel;(2) School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv, Israel;(3) Geochemistry Department, Aqueous Geochemistry Group, Earth Sciences Division MS 70-108B E.O. Lawrence Berkeley National Laboratory, Berkeley, CA, USA;(4) Physical Chemistry of Luminescence Materials Laboratory, Lyon 1 University, UMR 5620 CNRS, Villeurbanne, France |
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| Abstract: | Summary This work examines the red luminescence of benitoite studied by laser-induced time-resolved luminescence spectroscopy. This
method allows the differentiation between luminescence centers of similar emission wavelengths, but different decay times.
We have also examined the luminescence intensity and decay time as a function of temperature. We found that the red emission
of benitoite consists of two individual bands and one line and suggest that the activators of luminescence in benitoite system
are Ti3+ and a d3 element, namely Cr3+ or Mn4+. |
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