Acquiring Gamma-Ray Energy Spectrum Using a Plastic Scintillation Optical Fiber Detector

The plastic scintillation optical fiber (PSOF) detector, characterized by its large contact area with measurement targets, effectively detects and quantifies radiation in diverse radiation-contaminated areas and liquid environments. While it is extensively utilized for measuring alpha, beta, gamma,...

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Bibliographic Details
Published in:Photonics 2024-06, Vol.11 (6), p.493
Main Authors: Song, Siwon, Park, Jae Hyung, Kim, Jinhong, Kim, Seunghyeon, Jegal, Seokhyeon, Lee, Sangjun, Lee, Bongsoo
Format: Article
Language:English
Subjects:
Alpha rays
Attenuation coefficients
Calibration
Energy
energy calibration
Energy spectra
first-derivative method
Gamma rays
Neutron radiation
Nuclear power plants
Nuclides
Optical fibers
plastic scintillation optical fiber
Process controls
Radiation
Radiation dosage
Radiation measurement
Radiation sources
Regression analysis
Scintillation
Sensors
Target detection
α Radiation
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Summary:The plastic scintillation optical fiber (PSOF) detector, characterized by its large contact area with measurement targets, effectively detects and quantifies radiation in diverse radiation-contaminated areas and liquid environments. While it is extensively utilized for measuring alpha, beta, gamma, and neutron radiations, comprehensive documentation on the spectrum measurement and energy calibration methods for gamma nuclides has not been reported. Accurate energy calibration is crucial for the precise quantification of radiation doses from various sources. The pulse-height spectrum produced by the PSOF detector does not display a Compton maximum because of the significant Gaussian energy broadening. Additionally, this spectrum compresses as the distance increases between the radiation source and the light measurement device. In this study, the energy spectrum of a PSOF for gamma nuclides was characterized by energy calibrations using Compton edge (CE). The CE channel in the measurement spectrum of the PSOF detector for three gamma nuclides was identified using the first-order differentiation method. This technique was successfully applied to spectra measured at various radiation source positions to determine the attenuation coefficients. The proposed energy calibration method allows for the conversion of pulse-height spectra obtained from alpha, beta, and neutron radiation measured with PSOF detectors into energy spectra.
ISSN:2304-6732
2304-6732
DOI:10.3390/photonics11060493