Hybrid oxide mixtures as /spl gamma/-radiation sensors

Abstract

Metal oxide mixtures (TeO/sub 2//MnO and In/sub 2/O/sub 3//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 In/sub 2/O/sub 3//SiO were found to be far more conductive than their counterpart TeO/sub 2//MnO films. All hybrid devices were exposed to a disc-type /sup 137/Cs 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 /spl mu/Sv. Due to the stable dose response, these structures can be considered as a promising alternative in cost-effective personal dosimetry application.