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Study of optical properties of corundum crystals in the vacuum ultraviolet spectrum using synchrotron radiation; Issledovanie opticheskikh svojstv kristallov korunda v VUF oblasti spektra s ispol`zovaniem sinkhrotronnogo izlucheniya

Technical Report:

Abstract

The optical absorption spectra of {alpha}-Al{sub 2}O{sub 3} crystals with the electron colour centers produced during irradiation with reactor neutrons are investigated. The band discovered in the optical absorption spectrum is attributed to radiation defects, which is also proved by isochronal annealing. It is observed that in the neutron-irradiated and annealed crystals after reirradiation with hard photons of synchrotron radiation the intensity of the F{sup +} center absorption decreases and that of the F center increases. It is determined that the behaviour of the 7.9 eV band primarily found in the irradiated corundum crystal coincides with the behaviour of the F{sup +} center bands, hence the 7.9 eV absorption band is also due to electron transitions in the F{sup +} center. 8 refs.; 2 figs.
Publication Date:
Dec 31, 1989
Product Type:
Technical Report
Report Number:
EFI-1200-77-89
Reference Number:
SCA: 665300; PA: AIX-23:018395; SN: 92000662005
Resource Relation:
Other Information: PBD: 1989
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINIUM OXIDES; F CENTERS; PHYSICAL RADIATION EFFECTS; ABSORPTION SPECTRA; ANNEALING; CHROMIUM ADDITIONS; MONOCRYSTALS; NEUTRON BEAMS; RADIATION DOSES; SYNCHROTRON RADIATION; TEMPERATURE RANGE 0400-1000 K; 665300; INTERACTIONS BETWEEN BEAMS AND CONDENSED MATTER
OSTI ID:
10118625
Research Organizations:
Erevanskij Fizicheskij Inst., Erevan (Armenia)
Country of Origin:
USSR
Language:
Russian
Other Identifying Numbers:
Other: ON: DE92617495; TRN: SU9109664018395
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
9 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Arutyunyan, V V, Gevorkyan, V A, Grigoryan, N E, and Eritsyan, G N. Study of optical properties of corundum crystals in the vacuum ultraviolet spectrum using synchrotron radiation; Issledovanie opticheskikh svojstv kristallov korunda v VUF oblasti spektra s ispol`zovaniem sinkhrotronnogo izlucheniya. USSR: N. p., 1989. Web.
Arutyunyan, V V, Gevorkyan, V A, Grigoryan, N E, & Eritsyan, G N. Study of optical properties of corundum crystals in the vacuum ultraviolet spectrum using synchrotron radiation; Issledovanie opticheskikh svojstv kristallov korunda v VUF oblasti spektra s ispol`zovaniem sinkhrotronnogo izlucheniya. USSR.
Arutyunyan, V V, Gevorkyan, V A, Grigoryan, N E, and Eritsyan, G N. 1989. "Study of optical properties of corundum crystals in the vacuum ultraviolet spectrum using synchrotron radiation; Issledovanie opticheskikh svojstv kristallov korunda v VUF oblasti spektra s ispol`zovaniem sinkhrotronnogo izlucheniya." USSR.
@misc{etde_10118625,
title = {Study of optical properties of corundum crystals in the vacuum ultraviolet spectrum using synchrotron radiation; Issledovanie opticheskikh svojstv kristallov korunda v VUF oblasti spektra s ispol`zovaniem sinkhrotronnogo izlucheniya}
author = {Arutyunyan, V V, Gevorkyan, V A, Grigoryan, N E, and Eritsyan, G N}
abstractNote = {The optical absorption spectra of {alpha}-Al{sub 2}O{sub 3} crystals with the electron colour centers produced during irradiation with reactor neutrons are investigated. The band discovered in the optical absorption spectrum is attributed to radiation defects, which is also proved by isochronal annealing. It is observed that in the neutron-irradiated and annealed crystals after reirradiation with hard photons of synchrotron radiation the intensity of the F{sup +} center absorption decreases and that of the F center increases. It is determined that the behaviour of the 7.9 eV band primarily found in the irradiated corundum crystal coincides with the behaviour of the F{sup +} center bands, hence the 7.9 eV absorption band is also due to electron transitions in the F{sup +} center. 8 refs.; 2 figs.}
place = {USSR}
year = {1989}
month = {Dec}
}