title: Validation of energy-weighted algorithm for radiation portal monitor using plastic scintillator.
abstract: To prevent illicit tracking of radionuclides, radiation portal monitor (RPM) systems employing plastic scintillators have been used in ports and airports. However, their poor energy resolution makes the discrimination of radioactive material inaccurate. In this study, an energy weight algorithm was validated to determine (133)Ba, (22)Na, (137)Cs, and (60)Co by using a plastic scintillator. The Compton edges of energy spectra were converted to peaks based on the algorithm. The peaks have a maximum error of 6% towards the theoretical Compton edge.
authors.affiliation: Department of Radiation Convergence Engineering, Yonsei University, Korea.
authors.forename: Hyun Cheol
authors.initials: HC
authors.lastname: Lee
authors.affiliation: Department of Radiation Convergence Engineering, Yonsei University, Korea.
authors.forename: Wook-Geun
authors.initials: WG
authors.lastname: Shin
authors.affiliation: Department of Radiation Convergence Engineering, Yonsei University, Korea.
authors.forename: Hyo Jun
authors.initials: HJ
authors.lastname: Park
authors.affiliation: Department of Radiation Convergence Engineering, Yonsei University, Korea.
authors.forename: Do Hyun
authors.initials: DH
authors.lastname: Yoo
authors.affiliation: Radiological Emergency & Security Preparedness Department, Korea Institute of Nuclear Safety, Korea.
authors.forename: Chang-Il
authors.initials: CI
authors.lastname: Choi
authors.affiliation: Radiological Emergency & Security Preparedness Department, Korea Institute of Nuclear Safety, Korea.
authors.forename: Chang-Su
authors.initials: CS
authors.lastname: Park
authors.affiliation: Radiological Emergency & Security Preparedness Department, Korea Institute of Nuclear Safety, Korea.
authors.forename: Hong-Suk
authors.initials: HS
authors.lastname: Kim
authors.affiliation: Department of Radiation Convergence Engineering, Yonsei University, Korea. Electronic address: chmin@yonsei.ac.kr.
authors.forename: Chul Hee
authors.initials: CH
authors.lastname: Min
keywords: Energy weighted count; Monte Carlo simulation; Plastic scintillator; Radiation portal monitor