Abstract
The optical absorption method is a powerful tool for studying the optically induced transitions and for determining the energy gap in crystalline and non-crystalline materials. The absorption spectra in the lower energy part sheds light on the atomic vibrations. While the higher energy parts of the spectrum manifest the electronic states in the atoms. Effect of gamma-irradiation on the optical properties of plastic detector (Lexan film) has been studied. These investigations were carried out for gamma-doses from 10 kGy -2 mGy to determine the optical parameters; optical energy gap E{sub op}, absorption coefficient {alpha} , absorption index K, mobility energy gap E{sub g}, absorption band edge {lambda}{sub g} and the absorbance at wavelength 340 nm. The results showed that both direct and indirect transitions existed in lexan detector, and because highly sensitive to gamma-irradiation doses. The variations of optical energy gap with gamma-irradiation doses can be explained as the change in the degree of disorder and the phonon energy E{sub p}, is dose dependent. 7 figs.
Abd-Elrehim, N;
El-Samahy, A E;
Kassem, M E;
[1]
Abou-Taleb, W M
[2]
- Physics Department, Faculty of Science, Alexandria University. (Egypt)
- Physics and Chemistry Department, Faculty of Education, Alexandria University. (Egypt)
Citation Formats
Abd-Elrehim, N, El-Samahy, A E, Kassem, M E, and Abou-Taleb, W M.
Gamma-irradiation effects on optical properties of lexan film. Vol. 2.
Egypt: N. p.,
1996.
Web.
Abd-Elrehim, N, El-Samahy, A E, Kassem, M E, & Abou-Taleb, W M.
Gamma-irradiation effects on optical properties of lexan film. Vol. 2.
Egypt.
Abd-Elrehim, N, El-Samahy, A E, Kassem, M E, and Abou-Taleb, W M.
1996.
"Gamma-irradiation effects on optical properties of lexan film. Vol. 2."
Egypt.
@misc{etde_455811,
title = {Gamma-irradiation effects on optical properties of lexan film. Vol. 2}
author = {Abd-Elrehim, N, El-Samahy, A E, Kassem, M E, and Abou-Taleb, W M}
abstractNote = {The optical absorption method is a powerful tool for studying the optically induced transitions and for determining the energy gap in crystalline and non-crystalline materials. The absorption spectra in the lower energy part sheds light on the atomic vibrations. While the higher energy parts of the spectrum manifest the electronic states in the atoms. Effect of gamma-irradiation on the optical properties of plastic detector (Lexan film) has been studied. These investigations were carried out for gamma-doses from 10 kGy -2 mGy to determine the optical parameters; optical energy gap E{sub op}, absorption coefficient {alpha} , absorption index K, mobility energy gap E{sub g}, absorption band edge {lambda}{sub g} and the absorbance at wavelength 340 nm. The results showed that both direct and indirect transitions existed in lexan detector, and because highly sensitive to gamma-irradiation doses. The variations of optical energy gap with gamma-irradiation doses can be explained as the change in the degree of disorder and the phonon energy E{sub p}, is dose dependent. 7 figs.}
place = {Egypt}
year = {1996}
month = {Mar}
}
title = {Gamma-irradiation effects on optical properties of lexan film. Vol. 2}
author = {Abd-Elrehim, N, El-Samahy, A E, Kassem, M E, and Abou-Taleb, W M}
abstractNote = {The optical absorption method is a powerful tool for studying the optically induced transitions and for determining the energy gap in crystalline and non-crystalline materials. The absorption spectra in the lower energy part sheds light on the atomic vibrations. While the higher energy parts of the spectrum manifest the electronic states in the atoms. Effect of gamma-irradiation on the optical properties of plastic detector (Lexan film) has been studied. These investigations were carried out for gamma-doses from 10 kGy -2 mGy to determine the optical parameters; optical energy gap E{sub op}, absorption coefficient {alpha} , absorption index K, mobility energy gap E{sub g}, absorption band edge {lambda}{sub g} and the absorbance at wavelength 340 nm. The results showed that both direct and indirect transitions existed in lexan detector, and because highly sensitive to gamma-irradiation doses. The variations of optical energy gap with gamma-irradiation doses can be explained as the change in the degree of disorder and the phonon energy E{sub p}, is dose dependent. 7 figs.}
place = {Egypt}
year = {1996}
month = {Mar}
}