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.
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}
}
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}
}