Performance Evaluation of Fiber-Optic Radiation Sensor Using Spectroscopic Technique for Measurement of Alpha and Beta Particles

DOI: 10.5176/2301-3516_OPAP13.29

Authors: Wook Jae Yoo, Seunghan Hong, Sang Hun Shin, Jeong Ki Seo, Ki-Tek Han, Dayeong Jeon, Bongsoo Lee, Seunghyun Cho

Abstract:

In this study, we fabricated a fiber-optic radiation sensor (FORS) to separately measure alpha and beta particles. The FORS is composed of a dual scintillator probe, a plastic optical fiber (POF), a photo-multiplier tube (PMT)-amplifier system, and a multichannel analyzer (MCA). As the sensitive elements of the dual scintillator probe, we used two different kinds of inorganic scintillators, such as ZnS(Ag) and CaF2(Eu). Using the proposed FORS, we measured the alpha and beta energy spectra to discriminate species of radioactive isotopes and evaluated the response characteristics of the FORS according to the length of the POF and the distance between the radioisotope and the dual scintillator probe.

Keywords: alpha/beta spectroscopy; fiber-optic radiation sensor; plastic optical fiber; ZnS(Ag);CaF2(Eu)