Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/111841
Title: Synchrotron-Excited Luminescence of Natural Zircon
Authors: Shchapova, Y. V.
Votyakov, S. L.
Ivanov, V. Y.
Pustovarov, V. A.
Issue Date: 2010
Publisher: Maik Nauka-Interperiodica Publishing
Pleiades Publishing Ltd
Citation: Synchrotron-Excited Luminescence of Natural Zircon / Y. V. Shchapova, S. L. Votyakov, V. Y. Ivanov et al. // Geology of Ore Deposits. — 2010. — Vol. 52. — Iss. 7. — P. 679-687.
Abstract: The luminescence properties of two single zircon crystals from kimberlite of Yakutia have been studied, excited by the DORIS HASYLAB synchrotron, Germany, within energy range from the visible to the soft X-ray region (5-25, 50-200, and 500-620 eV) at temperatures of 300 and 10 K. The luminescence spectra in the range of 2.5 to 6.0 eV and excitation spectra of the main bands have been examined, the physical nature of the luminescence centers has been discussed, and the luminescence properties of a crystal containing growth (radiation) structural defects and a crystal with the same impurities but annealed in air at 1200°C are compared. The zoned structure of the mineral has been considered and the value of the energy gap (Eg) in the mineral has been estimated at 7.1 eV. Two groups of luminescence bands caused by impurities of intrinsic (growth, radiation) nature (Emax = 2.1, 2.7-2.8, and 3.2-3.3 eV) and matrix luminescence (Emax = 4.4-4.7 and 5.4 eV) probably with the participation of excitons were distinguished on the basis of selective excitation of zircon with different synchrotron energies relative to the gap value (Eexcit <Eg, Eexcit ~ Eg, and Eexcit > Eg). The short-lived component with a response time of 4 ns has been revealed in the afterglow of zircon in the region of 5.4 eV. © 2010 Pleiades Publishing, Ltd.
Keywords: CRYSTAL IMPURITIES
LUMINESCENCE OF INORGANIC SOLIDS
X RAYS
ZIRCON
EXCITATION SPECTRUM
LUMINESCENCE BAND
LUMINESCENCE CENTERS
LUMINESCENCE PROPERTIES
LUMINESCENCE SPECTRUM
SELECTIVE EXCITATIONS
SOFT X-RAY REGIONS
STRUCTURAL DEFECT
SILICATE MINERALS
ANNEALING
KIMBERLITE
LUMINESCENCE
TEMPERATURE EFFECT
GERMANY
RUSSIAN FEDERATION
SAKHA
URI: http://hdl.handle.net/10995/111841
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 78651260822
ISSN: 1075-7015
metadata.dc.description.sponsorship: ACKNOWLEDGMENTS This study was supported by the Presidium of the Russian Academy of Sciences (program 14 “Scientific Principles of Rational Nature Management”) and the Russian Foundation for Basic Research (project no. 09-05-00513).
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