Obtaining low energy γ dose with CMOS sensors

分类： 核科学技术 >> 核探测技术与核电子学 提交时间： 2023-06-18 合作期刊: 《Nuclear Science and Techniques》

WANG Fang WANG Ming-Yuan LIU Yu-Fang MA Chun-Wang CHANG Le

摘要： A method is established for measuring low energy -rays dose by using CMOS sensors without any X-/-ray converters. Gamma-ray source of 241Am and 152Eu are used to test the system. Based on gray value, an analysis method is proposed to obtain the -ray dose. Cumulative dose is determined by correlating the gray value to the dose readings of standard dosimeters. The relationship between gray value and the cumulative dose of -rays are trained by using back propagation neural network with BFGS algorithm. After comparison, it shows that BFGS algorithm trainings are suitable for different -ray sources under higher error condition. These indicate the feasibility of measuring low energy -ray dose by using common CMOS image sensors.

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