Published March 2005 | Version v1
Journal article Metadata-only

Electron excitations in BeAl2O4, Be2SiO4 and Be3Al2Si6O18 crystals

Creators

  • 1. Ural'skij Gosudarstvennyj Tekhnicheskij Univ., Ekaterinburg (Russian Federation)

Description

Low-temperature (T = 7 K) time-resolved selectively photoexcited luminescence spectra (2-6 eV) and luminescence excitation spectra (8-35 eV) of wide-bandgap chrysoberyl BeAl2O4, phenacite Be2SiO4, and beryl Be3Al2Si6O18 crystals have been studied using time-resolved VUV spectroscopy. Both the intrinsic luminescence of the crystals and the luminescence associated with structural defects were assigned. Energy transfer to impurity luminescence centers in alexandrite and emerald was investigated. Luminescence characteristics of stable crystal lattice defects were probed by 3.6-MeV accelerated helium ion beams

Abstract (Russian)

С использованием техники время-разрешенной ВУФ спектроскопии изучены низкотемпературные (Т = 7 К) время-разрешенные спектры люминесценции (2-6 эВ) при селективном фотовозбуждении и спектры возбуждения люминесценции (8-35 эВ) широкощелевых кристаллов - хризоберилла (BeAl2O4), фенакита (Be2SiO4) и берилла (Be3Al2Si6O18). Идентифицирована собственная и связанная с дефектами кристаллической структуры люминесценция кристаллов. Вопросы переноса энергии к примесным центрам свечения изучены для кристаллов александрита и изумруда. С помощью пучков ускоренных ионов гелия с энергией 3.6 МэВ определены характеристики свечений стабильных дефектов кристаллической решетки

Additional details

Additional titles

Original title (Russian)
Ehlektronnye vozbuzhdeniya v kristallakh BeAl

Publishing Information

Journal Title
Fizika Tverdogo Tela
Journal Volume
47
Journal Issue
3
Journal Page Range
p. 452-459
ISSN
0367-3294
CODEN
FTVTAC

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
37104192
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
ALUMINIUM OXIDES; BERYL; BERYLLIUM SILICATES; CRYSTAL DEFECTS; EMISSION SPECTRA; EXCITATION; FAR ULTRAVIOLET RADIATION; HELIUM 4 BEAMS; LUMINESCENCE; MEV RANGE 01-10; OXIDE MINERALS; RELAXATION
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; ALUMINIUM COMPOUNDS; BEAMS; BERYLLIUM COMPOUNDS; CHALCOGENIDES; CRYSTAL STRUCTURE; ELECTROMAGNETIC RADIATION; EMISSION; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; ION BEAMS; MEV RANGE; MINERALS; OXIDES; OXYGEN COMPOUNDS; PHOTON EMISSION; RADIATIONS; SILICATE MINERALS; SILICATES; SILICON COMPOUNDS; SPECTRA; ULTRAVIOLET RADIATION

Optional Information

Notes
17 refs., 11 figs., 2 tabs.