Science Journal of Physics

February 2012, Volume 2012, ISSN:2276-6367

Author(s) 2012. This work is distributed under the Creative Commons Attribution 3.0 License.

Research Article


The effect of gamma-Irradiation on the absorption spectra and optical energy gap of selenium dioxide thin films

Author: 1Riyadh. CH.Abul Hail, 1Hussein F. Hussein, 2Adil A.Al-Fregi

1University of Basrah, College of Education ,Department of physics,Basrah, Iraq.
2University of Basrah, College of Science ,Department of Chemistry,Basrah, Iraq.

Accepted 25 January; Available Online February 2012


Thin films of selenium dioxide (SeO2) were investigated for gamma-irradiation dosimetry purpose. Samples were fabricated using cast method .Thin films of SeO2 were exposed to a Cs-137 gamma-radiation source at a dose rate 0.56 Gy/min at room temperature .Absorption spectra for SeO2 films were recorder and the values of the optical band and energies of localized states for no irradiated and gamma-irradiated samples were calculated. it was found that the optical band gap values were decreased as the radiation dose was increased. The observed change in the optical properties suggest that SeO2 thin film may be considered as an effective material for room temperature real time gamma-radiation

Keyword:gamma-irradiation, optical energy gap, Selenium dioxide, thin film