Synchrotron-Excited Luminescence of Natural Zircon / Shchapova Yu. V.,Votyakov S. L.,Ivanov V. Yu.,Pustovarov V. A. // GEOLOGY OF ORE DEPOSITS. - 2010. - V. 52, l. 7. - P. 679-687.

ISSN/EISSN:

1075-7015 / нет данных

Type:

Article

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 degrees C are compared. The zoned structure of the mineral has been considered and the value of the energy gap (E(g)) in the mineral has been estimated at 7.1 eV. Two groups of luminescence bands caused by impurities of intrinsic (growth, radiation) nature (E(max) = 2.1, 2.7-2.8, and 3.2-3.3 eV) and matrix luminescence (E(max) = 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 (E(excit) < E(g), E(excit) similar to E(g), and E(excit) >> E(g)). 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. DOI: 10.1134/S1075701510070214

Author keywords:

X-IRRADIATED ZIRCON; HOLE-CENTERS; CATHODOLUMINESCENCE; RADIATION; ABSORPTION; ELECTRON; HASYLAB; ZRSIO4; EPR

DOI:

10.1134/S1075701510070214

Web of Science ID:

ISI:000286181500021

Соавторы в МНС:

Другие поля

Поле	Значение
Month	DEC
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	X-IRRADIATED ZIRCON; HOLE-CENTERS; CATHODOLUMINESCENCE; RADIATION; ABSORPTION; ELECTRON; HASYLAB; ZRSIO4; EPR
Research-Areas	Geology; Mineralogy
Web-of-Science-Categories	Geology; Mineralogy
Author-Email	koro-teev@igg.uran.ru
Funding-Acknowledgement	Presidium of the Russian Academy of Sciences {[}14]; Russian Foundation for Basic Research {[}09-05-00513]
Funding-Text	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).
Number-of-Cited-References	36
Usage-Count-Since-2013	5
Journal-ISO	Geol. Ore Depos.
Doc-Delivery-Number	706AA