Title :
Hybrid oxide mixtures as γ-radiation sensors
Author :
Fahim, Farah K. ; Arshak, Khalil I. ; Korostynska, Olga
Author_Institution :
Dept. of Electron. & Comput. Eng., Limerick Univ., Ireland
Abstract :
Metal oxide mixtures (TeO2/MnO and In2O3/SiO) in the form of planar structures deposited on screen printed thick film interdigitated electrodes were investigated for gamma-radiation dosimetry purposes. Radiation sensitive layers were deposited using thin film vapour deposition technique. Films made with In2O3/SiO were found to be far more conductive than their counterpart TeO2/MnO films. All hybrid devices were exposed to a disc-type 137Cs radiation source with an activity of 370 kBq. They showed an increase in the values of current with the increase in gamma dose up to a level of 45.4 μSv. Due to the stable dose response, these structures can be considered as a promising alternative in cost-effective personal dosimetry application.
Keywords :
dosimetry; electrodes; gamma-ray detection; gamma-ray effects; indium compounds; manganese compounds; semiconductor materials; silicon compounds; tellurium compounds; thick films; vapour deposited coatings; γ-radiation sensors; 137Cs; In2O3-SiO; TeO2-MnO; disc-type 137Cs radiation source; gamma-radiation dosimetry; hybrid device; hybrid oxide mixtures; hybrid structures; metal oxide mixtures; personal dosimetry; planar structures; radiation sensitive layers; screen printed thick film interdigitated electrodes; stable dose response; thin film vapour deposition technique; Conductive films; Dosimetry; Electrodes; Gamma rays; Optical films; Optical materials; Optical mixing; Optical sensors; Radiation detectors; Sputtering;
Conference_Titel :
Sensors, 2003. Proceedings of IEEE
Print_ISBN :
0-7803-8133-5
DOI :
10.1109/ICSENS.2003.1278901
