Features of OSL and TL properties of anion-defective corundum crystals exposed to thermo-optical treatment / Vlasov M. I.,Surdo A. I.,Milman I. I.,Abashev R. M. // RADIATION MEASUREMENTS. - 2016. - V. 90, l. SI. - P. 71-74.

ISSN/EISSN:

1350-4487 / нет данных

Type:

Article; Proceedings Paper

Abstract:

The results of systematic investigation of the mechanisms and role of phototransfer in TL and OSL processes in alpha-Al2O3-delta crystals under controlled filling of the main and deep traps depleted at 450 and 720 K, respectively, are presented. Optical depletion spectra of the main and deep traps were measured and compared. It was found that green light stimulation only depletes the main trap, while blue light depletes both the main and deep traps. Optical depletion of the deep trap results in phototransfer of charges that can be realized by 2 mechanisms: either through the main trap to recombination centers or directly to the latter. However, the dominant contribution to the OSL signal is provided by phototransfer through the main trap. It is also found that UV emission at 3.7 eV dominates over F-emission at 3.0 eV in the phototransferred TL spectrum. It is assumed that this UV emission is not related to the F+ centers. (C) 2016 Elsevier Ltd. All rights reserved.

Author keywords:

Anion-defective corundum; Optically stimulated luminescence; Thermoluminescence; Deep traps; Phototransfer; Thermo-optical treatment LIGHT-EMITTING-DIODES; AL2O3

DOI:

10.1016/j.radmeas.2016.01.017

Web of Science ID:

ISI:000378470500017

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JUL
Note	9th International Conference on Luminescent Detectors and Transformers of Ionizing Radiation (LUMDETR), Tartu, ESTONIA, SEP 20-25, 2015
Organization	Univ Tartu, Inst Phys
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Address	THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Language	English
Keywords-Plus	LIGHT-EMITTING-DIODES; AL2O3
Research-Areas	Nuclear Science \& Technology
Web-of-Science-Categories	Nuclear Science \& Technology
Author-Email	ais@2-u.ru surdo@ecko.uran.ru
ResearcherID-Numbers	Vlasov, Maxim/M-1739-2016
Number-of-Cited-References	6
Usage-Count-Since-2013	3
Journal-ISO	Radiat. Meas.
Doc-Delivery-Number	DP4MR