基于电容的使用全耗尽绝缘体上硅器件对钴-60辐射进行剂量测定
Capacitance-Based Dosimetry of Co-60 Radiation using Fully-Depleted Silicon-on-Insulator Devices.
作者信息
Li Yulong, Porter Warren M, Ma Rui, Reynolds Margaret A, Gerbi Bruce J, Koester Steven J
机构信息
Department of Electrical and Computer Engineering, University of Minnesota, 200 Union St. SE, Minneapolis, MN 55455.
Biophysical Sciences and Medical Physics Program, University of Minnesota, 424 Harvard St SE, Minneapolis, MN 55455.
出版信息
IEEE Trans Nucl Sci. 2015 Dec;62(6):3012-3019. doi: 10.1109/TNS.2015.2487239. Epub 2015 Nov 9.
The capacitance based sensing of fully-depleted silicon-on-insulator (FDSOI) variable capacitors for Co-60 gamma radiation is investigated. Linear response of the capacitance is observed for radiation dose up to 64 Gy, while the percent capacitance change per unit dose is as high as 0.24 %/Gy. An analytical model is developed to study the operational principles of the varactors and the maximum sensitivity as a function of frequency is determined. The results show that FDSOI varactor dosimeters have potential for extremely-high sensitivity as well as the potential for high frequency operation in applications such as wireless radiation sensing.
研究了用于钴 - 60伽马辐射的全耗尽绝缘体上硅（FDSOI）可变电容器的基于电容的传感。在高达64 Gy的辐射剂量下观察到电容的线性响应，而每单位剂量的电容变化百分比高达0.24%/Gy。开发了一个分析模型来研究变容二极管的工作原理，并确定了作为频率函数的最大灵敏度。结果表明，FDSOI变容二极管剂量计在诸如无线辐射传感等应用中具有极高灵敏度的潜力以及高频运行的潜力。
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