Development of compact sensor with CdS photoresistor for high gamma-ray field monitoring

Huy Le Viet; Hiroyuki Miyamaru; Takao Kojima

doi:10.1016/j.apradiso.2021.109698

Development of compact sensor with CdS photoresistor for high gamma-ray field monitoring

Appl Radiat Isot. 2021 Jun:172:109698. doi: 10.1016/j.apradiso.2021.109698. Epub 2021 Mar 23.

Authors

Huy Le Viet¹, Hiroyuki Miyamaru², Takao Kojima²

Affiliations

¹ Division of Quantum and Radiation Engineering, Graduate School of Engineering, Osaka Prefecture University, 1-2 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8570, Japan. Electronic address: dd106002@edu.osakafu-u.ac.jp.
² Division of Quantum and Radiation Engineering, Graduate School of Engineering, Osaka Prefecture University, 1-2 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8570, Japan.

PMID: 33780693
DOI: 10.1016/j.apradiso.2021.109698

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.

Keywords: CdS photoresistor; CsI(Tl) scintillator; Gamma-ray sensor; Radiation exposure.