Development and Comparison of Fiber-Optic Beta Radiation Sensors with Different Diameters of Their Sensing Probes

Abstract

A fiber-optic radiation sensor (FORS) was developed for remote and real-time measurements of beta radiation from radioactivecontaminated soil. The sensing probe consisted of a bundle of organic scintillators and a mixture of epoxy resin to improve the detection efficiency. The measurement system consisted of a sensing probe with an aluminium foil reflector, a transmitting plastic optical fiber, and a light-measuring system comprising a photomultiplier tube, a preamplifier, a multichannel analyzer, and a laptop computer. Several sensing probes, whose dead-end diameters were 26 mm (bundle type I), 36 mm (bundle type II), and 46 mm (bundle type III), were prepared and characterized to identify the best sensing probe in terms of its radiation detection efficiency. The reproducibility of the FORS for the measurement of beta radiation was confirmed using a 2 -test. The measurements showed that the FORS sensing probe with a diameter 46 mm has the best detection performance.

Sensors for Context-Aware Smart Healthcare: A Security Perspective

“…To protect against radiation exposure, portable and affordable devices are being developed to detect Gamma radiation using Geiger–Müller tubes or fibre-optic radiation sensors [ 236 , 237 , 238 , 239 , 240 ] and to detect infrared and UV lights through optical sensors as well [ 241 ] (see Table 10 ).…”

Gamma-ray Spectroscopy Using Inorganic Scintillator Coated with Reduced Graphene Oxide in Fiber-Optic Radiation Sensor

“…One of the most widely used gamma-ray detection methods is gamma-ray spectroscopy, which can be employed to determine the types and quantities of gamma-rayemitting radioisotopes in nuclear facilities such as nuclear power plants and radioactive waste-disposal sites [1,2]. Generally, gamma-ray spectroscopy can be performed in the laboratory with radioisotope samples using a scintillating radiation detector that consists of an inorganic scintillator, a photomultiplier tube (PMT), a preamplifier, and a digitizer.…”