Capacitance-Based Dosimetry of Co-60 Radiation Using Fully-Depleted Silicon-on-Insulator Devices

Yulong Li, Warren M. Porter, Rui Ma, Margaret A. Reynolds, Bruce J. Gerbi, Steven J. Koester

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3 Scopus citations


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.

Original languageEnglish (US)
Article number7322297
Pages (from-to)3012-3019
Number of pages8
JournalIEEE Transactions on Nuclear Science
Issue number6
StatePublished - Dec 2015

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