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Updated: Nov 11, 2025
Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera
Published on: January 30, 2020
Development of compact sensor with CdS photoresistor for high gamma-ray field monitoring
Huy Le Viet1, Hiroyuki Miyamaru1, Takao Kojima1
1Division of Quantum and Radiation Engineering, Graduate School of Engineering, Osaka Prefecture University, 1-2 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8570, Japan.
Abstract:
A compact gamma-ray sensor composed of a cadmium sulfide (CdS) photoresistor and a small-sized cesium iodine doped thallium scintillator is introduced for intense gamma-ray monitoring. The sensor exhibits radiation-resistant ability and a linear output response over a wide dose range. The dose rate at several conditions was measured for confirmation of feasibility. Experimental results demonstrated its advantage for gamma-ray measurements in intense fields as an inexpensive, robust, compact, and high-sensitivity device.
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