FABRICATION OF A THIN FILM GAMMA RADIATION SENSOR USING NANO METAL OXIDES

Document Type : Original Article

Authors

1 Radiation Safety Dept., Nuclear & Radiological Safety Research Center, Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt.

2 Computer and System Engineering Dept., Faculty of Engineering, Al-Azhar University, Nasr City, Cairo, Egypt.

Abstract

The development of nuclear technology has led to increased interest in radiation monitoring systems based on sensors and dosimeters that detect and measure ionizing radiation in a given environment. A gamma radiation (GR) sensor detects the presence of GR, while a GR dosimeter measures the amount of GR to which a person or object has been exposed. A thin film of Nano CuO/ZnO with a 90%:10% ratio on a Cu substrate was chosen to be fabricated using sol-gel method for GR sensing and dosimetry. This choice was the result of simulation of some metal oxides using a MATLAB program in one of my previous studies. The film was characterized as nano CuO/ZnO using X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray (EDXS) spectroscopy. Two silver paste electrodes were deposited on the film for Current-Voltage (I-V) characterization, which showed that the sensor behaved like a diode. The sensitivity of the sensor to GR was studied by irradiating it with different low doses of GR. The I-V curves of the sensor were measured after each irradiation, and the current-dose (I-D) curve was studied and plotted at a voltage of 0.5 V from which an equation for calculating the accumulated dose was deducted. The results show that the nano CuO/ZnO thin film sensor has promising properties for GR dosimetry applications in which the accumulated low dose of GR can be calculated.
 
Special Issue of AEIC 2024 (Electrical and System & Computer Engineering  Session)

Keywords

Journal of Al-Azhar University Engineering Sector
Volume 19, Issue 72
Special Issue for Al-Azhar Engineering 16th. International Conference (AEIC 2024)
July 2024
Pages 1-14

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