DocumentCode :
3123526
Title :
Gamma radiation nose system based on In2O3/SiO thick film pn-junctions [dosimetry applications]
Author :
Arshak, K. ; Korostynska, O. ; Szumilas, L. ; Harris, J. ; Clifford, S.
Author_Institution :
Dept. of Electron. & Comput. Eng., Limerick Univ., Ireland
fYear :
2004
fDate :
24-27 Oct. 2004
Firstpage :
1179
Abstract :
In2O3 and SiO mixtures, in thick film pn-junction form, were investigated for γ-radiation dosimetry purposes. Results show that the current increased with an increase in radiation dose to a certain level, exceeding this level resulted in device damage. The performance parameters of the devices, such as sensitivity to γ-radiation exposure and working dose region, were found to be highly dependant on the composition of the materials used. To cover a wider range of radiation, the approach of using sensor arrays was utilized, where the sections of the radiation nose system differ in material composition. A dynamic selection of the multiple sensors of various sensitivity and accuracy range was implemented by applying an error and pattern recognition analysis, which maximizes measurement accuracy. The algorithm was optimized for efficiency, which allows its use it in small devices, like handheld computers.
Keywords :
dosimeters; gamma-ray detection; indium compounds; radioactivity measurement; silicon compounds; thick film devices; γ-radiation dosimetry; In2O3-SiO; error analysis; gamma radiation nose system; material composition; measurement accuracy; multiple varying sensitivity sensors; pattern recognition analysis; radiation dose dependant current increase; radiation exposure sensitivity; sensor accuracy range; sensor arrays; thick film pn-junctions; working dose region; Composite materials; Computer errors; Dosimetry; Gamma rays; Nose; Pattern analysis; Pattern recognition; Sensor arrays; Sensor systems; Thick films;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Sensors, 2004. Proceedings of IEEE
Print_ISBN :
0-7803-8692-2
Type :
conf
DOI :
10.1109/ICSENS.2004.1426388
Filename :
1426388
Link To Document :
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