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Gamma radiation sensing using ZnO and SnO2 thick film

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Show simple item record Arshak, Khalil Korostynska, Olga Jafer, Essa Arshak, Arousian Morris, Deirdre Gill, Edric I. 2011-07-21T09:43:05Z 2011-07-21T09:43:05Z 2006
dc.description peer-reviewed
dc.description.abstract A novel cost-effective real-time gamma radiation monitoring system based on metal oxide thick films was designed and tested. The changes in capacitances of ZnO and SnO2 thick film capacitors with interdigitated electrodes were monitored in real time under the influence of gamma radiation using miniaturized, low power, bi- directional wireless communication system. The capacitive interface circuitry was based on a Delta-sigma (ΣΔ) modulator using switched capacitor (SC) circuit architecture with integrated on-chip temperature sensor. At the base station side, an Frequency Shift Keying (FSK) receiver/transmitter is connected to another MCU unit, which send the received data or received instructions from a PC through a graphical user interface GUI. Industrial, Scientific and Medical (ISM) band RF (433 MHz) was used to achieve half duplex communication between the two sides. All the modules of the mixed signal system are integrated in a printed circuit board (PCB) of size 22.46x20.168mm. The overall system supply voltage is 2.7V maximum. 137Cs source with an activity of 370 kBq was used. An increase in the values of capacitance with radiation was recorded for both films to a certain dose level, determined by the material of sensitive layer. en_US
dc.language.iso eng en_US
dc.publisher IEEE Computer Society en_US
dc.rights ©2006 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. en_US
dc.subject gamma radiation
dc.subject thick films
dc.title Gamma radiation sensing using ZnO and SnO2 thick film en_US
dc.type Conference item en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.type.restriction none en

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