FABRICATION OF A THIN FILM GAMMA RADIATION SENSOR USING NANO METAL OXIDES | ||||
| Journal of Al-Azhar University Engineering Sector | ||||
| Volume 19, Issue 72, July 2024, Page 1-14 PDF (863.63 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/auej.2023.247516.1465 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Sahar Wafik Morsy   1; Mohamed Khalil Refai2; Ahmed Nour El-Mahdy2; Magy Mohamed Kandil1
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| 1Radiation Safety Dept., Nuclear & Radiological Safety Research Center, Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt. | ||||
| 2Computer 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 | ||||
| Nanotechnology; Sol-gel method; nano metal oxide films; Gamma sensors; Gamma dosimeters | ||||
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