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Electron irradiation effect on the band structure of {alpha}-Al{sub 2}O{sub 3} single crystal; Vliyanie ehlektronnogo oblucheniya na zonnuyu strukturu monokristalla al`fa-Al{sub 2}O{sub 3}

Technical Report:

Abstract

With the use of highly polarized synchrotron radiation the absorption, reflection and luminescence spectra of a rated pure corundum single crystal irradiated with 50 MeV electrons are measured in the vacuum ultra-violet region. A strong anisotropy of the absorption optical bands according to orientation of the electric vector E to the optical axis C{sub 3} is observed. Electron irradiation leads to formation of the F{sup +} centre (the 6.3 and 7 eV bands), displacement of the exciton peak maximum, and an anisotropy of high-energy bands in the reflection spectra. Using the Kramers-Kronig analysis the spectra of optical functions are obtained for unirradiated corundum crystals. 19 refs.; 8 figs.
Publication Date:
Dec 31, 1989
Product Type:
Technical Report
Report Number:
EFI-1183-60-89
Reference Number:
SCA: 665300; PA: AIX-23:018394; SN: 92000662004
Resource Relation:
Other Information: PBD: 1989
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINIUM OXIDES; F CENTERS; PHYSICAL RADIATION EFFECTS; ABSORPTION SPECTRA; CHROMIUM ADDITIONS; ELECTRON BEAMS; ENERGY LEVELS; EXCITONS; KRAMERS-KRONIG CORRELATION; LUMINESCENCE; MEV RANGE 10-100; MONOCRYSTALS; REFLECTION; ULTRAVIOLET SPECTRA; 665300; INTERACTIONS BETWEEN BEAMS AND CONDENSED MATTER
OSTI ID:
10118621
Research Organizations:
Erevanskij Fizicheskij Inst., Erevan (Armenia)
Country of Origin:
USSR
Language:
Russian
Other Identifying Numbers:
Other: ON: DE92617494; TRN: SU9109663018394
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
20 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Arutyunyan, V V, Gevorkyan, V A, Grigoryan, N E, and Eritsyan, G N. Electron irradiation effect on the band structure of {alpha}-Al{sub 2}O{sub 3} single crystal; Vliyanie ehlektronnogo oblucheniya na zonnuyu strukturu monokristalla al`fa-Al{sub 2}O{sub 3}. USSR: N. p., 1989. Web.
Arutyunyan, V V, Gevorkyan, V A, Grigoryan, N E, & Eritsyan, G N. Electron irradiation effect on the band structure of {alpha}-Al{sub 2}O{sub 3} single crystal; Vliyanie ehlektronnogo oblucheniya na zonnuyu strukturu monokristalla al`fa-Al{sub 2}O{sub 3}. USSR.
Arutyunyan, V V, Gevorkyan, V A, Grigoryan, N E, and Eritsyan, G N. 1989. "Electron irradiation effect on the band structure of {alpha}-Al{sub 2}O{sub 3} single crystal; Vliyanie ehlektronnogo oblucheniya na zonnuyu strukturu monokristalla al`fa-Al{sub 2}O{sub 3}." USSR.
@misc{etde_10118621,
title = {Electron irradiation effect on the band structure of {alpha}-Al{sub 2}O{sub 3} single crystal; Vliyanie ehlektronnogo oblucheniya na zonnuyu strukturu monokristalla al`fa-Al{sub 2}O{sub 3}}
author = {Arutyunyan, V V, Gevorkyan, V A, Grigoryan, N E, and Eritsyan, G N}
abstractNote = {With the use of highly polarized synchrotron radiation the absorption, reflection and luminescence spectra of a rated pure corundum single crystal irradiated with 50 MeV electrons are measured in the vacuum ultra-violet region. A strong anisotropy of the absorption optical bands according to orientation of the electric vector E to the optical axis C{sub 3} is observed. Electron irradiation leads to formation of the F{sup +} centre (the 6.3 and 7 eV bands), displacement of the exciton peak maximum, and an anisotropy of high-energy bands in the reflection spectra. Using the Kramers-Kronig analysis the spectra of optical functions are obtained for unirradiated corundum crystals. 19 refs.; 8 figs.}
place = {USSR}
year = {1989}
month = {Dec}
}