Short-living defects and recombination processes in Li6Gd(BO3)(3) crystals / Ogorodnikov I. N.,Poryvay N. E.,Pustovarov V. A.,Tolmachev A. V.,Yavetskiy R. P.,Yakovlev V. Yu. // RADIATION MEASUREMENTS. - 2010. - V. 45, l. 3-6, SI. - P. 336-339.

ISSN/EISSN:

1350-4487 / нет данных

Type:

Article; Proceedings Paper

Abstract:

Results of a study of transient optical absorption (TOA) and luminescence of lithium-gadolinium orthoborate Li6Gd(BO3)(3) (LGBO) in the visible and ultraviolet spectral regions are presented. As revealed by absorption optical spectroscopy with nanosecond time resolution, the LGBO TOA derives from optical transitions in hole centers, with the optical density relaxation kinetics being mediated by interdefect tunneling recombination involving these centers and neutral lithium atoms acting as electronic Li-0 centers. At 290 K, the Li-0 centers are involved in thermally stimulated migration, which is not accompanied by carrier transfer to the conduction or valence band. The slow TOA decay kinetics components, with characteristic times ranging from a few milliseconds to seconds, have been assigned to diffusion-limited annihilation of lithium interstitials with vacancies. The mechanisms responsible for the creation and relaxation of short-living Frenkel defect pairs in the LGBO cation sublattice have been analyzed. (C) 2010 Elsevier Ltd. All rights reserved.

Author keywords:

Optical spectroscopy; Time-resolution; Lattice defects; Lithium borate crystals; Li6Gd(BO3)(3) TRANSIENT OPTICAL-ABSORPTION; LUMINESCENCE; LIB3O5

DOI:

10.1016/j.radmeas.2010.01.039

Web of Science ID:

ISI:000279183200024

Соавторы в МНС:

Другие поля

Поле	Значение
Month	MAR-JUL
Note	7th European Conference on Luminescent Detectors and Transformers of Ionizing Radiation, Cracow, POLAND, JUL 12-17, 2009
Organization	Polish Acad Sci, Inst Nucl Phys
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Address	THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Language	English
Keywords-Plus	TRANSIENT OPTICAL-ABSORPTION; LUMINESCENCE; LIB3O5
Research-Areas	Nuclear Science \& Technology
Web-of-Science-Categories	Nuclear Science \& Technology
Author-Email	igor.ogorodnikov@bk.ru
ResearcherID-Numbers	Ogorodnikov, Igor/B-4162-2011 Yavetskiy, Roman/J-4323-2015 Yakovlev, Victor/P-4197-2015
ORCID-Numbers	Ogorodnikov, Igor/0000-0002-4700-2340 Yavetskiy, Roman/0000-0003-4260-5481
Number-of-Cited-References	12
Usage-Count-Since-2013	6
Journal-ISO	Radiat. Meas.
Doc-Delivery-Number	616BQ