title: Development and Performance Characteristics of Personal Gamma Spectrometer for Radiation Monitoring Applications.
abstract: In this study, a personal gamma (γ) spectrometer was developed for use in applications in various fields, such as homeland security and environmental radiation monitoring systems. The prototype consisted of a 3 × 3 × 20 mm³ Ce-doped Gd-Al-Ga-garnet (Ce:GAGG) crystal that was coupled to a Si photomultiplier (SiPM) to measure γ radiation. The γ spectrometer could be accessed remotely via a mobile device. At room temperature, the implemented Ce:GAGG-SiPM spectrometer achieved energy resolutions of 13.5%, 6.9%, 5.8%, and 2.3% for (133)Ba at 0.356 MeV, (22)Na at 0.511 MeV, (137)Cs at 0.662 MeV, and (60)Co at 1.33 MeV, respectively. It consumed only about 2.7 W of power, had a mass of just 340 g (including the battery), and measured only 5.0 × 7.0 cm².
authors.affiliation: Department of Physics, University of Myongji, Yongin 449-728, Korea. park2011@mju.ac.kr.
authors.forename: Hye Min
authors.initials: HM
authors.lastname: Park
authors.affiliation: Department of Physics, University of Myongji, Yongin 449-728, Korea. ramilab2011@gmail.com.
authors.forename: Koan Sik
authors.initials: KS
authors.lastname: Joo
keywords: Ce-doped Gd–Al–Ga–garnet (Ce:GAGG); Si photomultiplier (SiPM); energy resolution; environmental radiation monitoring system (ERMS); homeland security (HLS); spectrometer