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

Author

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

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Minnesota, Minneapolis, MN, USA

Volume

62

Issue

6

fYear

2015

Firstpage

3012

Lastpage

3019

Abstract

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.

Keywords

cobalt; dosimetry; gamma-rays; radiation effects; silicon-on-insulator; varactors; Co; FDSOI varactor dosimeters; Si; capacitance-based dosimetry; capacitance-based sensing; fully-depleted silicon-on-insulator devices; gamma radiation; linear response; radiation dose; wireless radiation sensing; Capacitance; Dosimetry; MOS devices; Radiation detectors; Radiation effects; Sensitivity; Silicon-on-insulator; Varactors; Dosimeters; MOS devices; SOI; radiation detectors; varactors;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2015.2487239

Filename

7322297