Radiation-induced transformations of luminescence centers in anion-defective alumina crystals under high-dose irradiations / Kortov V. S.,Pustovarov V. A.,Shtang T. V. // NUCLEAR INSTRUMENTS \& METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS. - 2015. - V. 353, l. . - P. 42-45.

ISSN/EISSN:

0168-583X / 1872-9584

Type:

Article

Abstract:

Luminescent spectroscopy is used to show formation of new trapping centers of charge carriers in anion-defective alumina crystals at radiation-induced transformations of F and F+-centers created by oxygen vacancies when exposed to high-dose gamma-radiation. A new wide band in the range 440-700 nm was registered in the photoluminescence spectrum at excitations with UV photons. High-dose irradiation of the crystals leads to appearance of F-2-type aggregate centers in different charged states. These centers are additional traps of charge carriers. The new traps increase a luminescent yield at high-dose irradiation with gamma-rays and an electron beam. (C) 2015 Elsevier B.V. All rights reserved.

Author keywords:

Alumina; High-dose irradiation; Oxygen vacancies; Aggregated centers; Photoluminescence OPTICAL-PROPERTIES; THERMOLUMINESCENCE; DEPENDENCE; AL2O3

DOI:

10.1016/j.nimb.2015.04.039

Web of Science ID:

ISI:000356193800007

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JUN 15
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1872-9584
Keywords-Plus	OPTICAL-PROPERTIES; THERMOLUMINESCENCE; DEPENDENCE; AL2O3
Research-Areas	Instruments \& Instrumentation; Nuclear Science \& Technology; Physics
Web-of-Science-Categories	Instruments \& Instrumentation; Nuclear Science \& Technology; Physics, Atomic, Molecular \& Chemical; Physics, Nuclear
Author-Email	vskortov@mail.ru vpustovarov@bk.ru t.v.shtang@gmail.com
Funding-Acknowledgement	Ministry of Education and Science of the Russian Federation {[}3. 2016. 2014/K]
Funding-Text	The work was done as a part of the state task (No. 3. 2016. 2014/K) of the Ministry of Education and Science of the Russian Federation.
Number-of-Cited-References	21
Usage-Count-Since-2013	7
Journal-ISO	Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms
Doc-Delivery-Number	CK4KX