Luminescence of molecular O-2(-) ions in neutron-irradiated Be2GeO4 / Blaginina L.,Zatsepin A.,Kukharenko A.,Pustovarov V.,Cholakh S. // RADIATION MEASUREMENTS. - 2007. - V. 42, l. 4-5, SI. - P. 827-830.

ISSN/EISSN:

1350-4487 / нет данных

Type:

Article; Proceedings Paper

Abstract:

The low-temperature time-resolved photoluminescent spectroscopy with synchrotron excitation was used to analyse samples of polycrystalline Be2GeO4 after exposure to fast neutrons (E similar to 1 MeV; Phi = 4.5 x 10(17) cm(-2)). Luminescence spectra of the test samples contained the band at 1.7 eV arising from the radiative relaxation of neutron-induced molecular O-2(-) ions. Luminescence of these defects was efficiently excited by photons with an energy of 4.7 and 5.2eV. Contours of the corresponding bands in the photoluminescence and excitation spectra of O-2(-) centres had a characteristic fine structure, which reflected the presence of intracentre interactions. Average vibration frequencies of O-2(-) ions in the Be2GeO4 lattice were determined. Potential energy curves were calculated using the Morse potential for the ground and excited states of molecular O-2(-)-ions in Be2GeO4. (c) 2007 Elsevier Ltd. All rights reserved.

Author keywords:

beryllium orthogermanate Be2GeO4; luminescence; electron-oscillation structure; O-2(-)-molecular ion INTERSTITIAL OXYGEN MOLECULES; ALKALI-HALIDE CRYSTALS; EXCITED-STATE; SIO2

DOI:

10.1016/j.radmeas.2007.02.032

Web of Science ID:

ISI:000249832000078

Соавторы в МНС:

Другие поля

Поле	Значение
Month	APR-MAY
Note	6th European Conference on Luminescent Detectors and Transformers of Ionizing Radiation, Lviv, UKRAINE, JUN, 2006
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Address	THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Language	English
Keywords-Plus	INTERSTITIAL OXYGEN MOLECULES; ALKALI-HALIDE CRYSTALS; EXCITED-STATE; SIO2
Research-Areas	Nuclear Science \& Technology
Web-of-Science-Categories	Nuclear Science \& Technology
Author-Email	zats@dpt.ustu.ru
ResearcherID-Numbers	Kukharenko, Andrey/M-8256-2016 Cholakh, Seif/M-8221-2016
ORCID-Numbers	Kukharenko, Andrey/0000-0003-3774-6909 Cholakh, Seif/0000-0002-9313-6614 Zatsepin, Anatoly/0000-0001-9539-2403
Number-of-Cited-References	14
Usage-Count-Since-2013	7
Journal-ISO	Radiat. Meas.
Doc-Delivery-Number	215TN