Development of an energy and efficiency calibration method for stilbene scintillators

Chanho Kim; Jaehyo Kim; Wooseong Hong; Jung Yeol Yeom; Geehyun Kim

doi:10.1016/j.net.2022.06.016

Development of an energy and efficiency calibration method for stilbene scintillators

Chanho Kim, Jaehyo Kim, Wooseong Hong, Jung Yeol Yeom, Geehyun Kim

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

A method for calibrating the energy scale and detection efficiency of stilbene scintillators is presented herein. This method can be used to quantitatively analyze the Compton continuum of gamma-ray spectra obtained using such scintillators. First, channel–energy calibration was conducted by fitting a semiempirical equation for the Compton continuum to the acquired energy spectrum and a new method to evaluate the intrinsic detection efficiency, called intrinsic Compton efficiency, of stilbene scintillators was proposed. The validity of this method was verified by changing experimental conditions such as the number of sources being measured simultaneously and the detector–source distance. According to the energy calibration, the standard error for the estimated Compton edge position was ±1.56 keV. The comparison of the intrinsic Compton efficiencies calculated from the single- and two-source spectra showed that the mean absolute difference and the mean absolute percentage difference are 0.031 %p and 0.557%, respectively, demonstrating reasonable accuracy of this method. The feasibility of the method was confirmed for an energy range of 0.5–1.5 MeV, showing that stilbene scintillators can be used to quantitatively analyze gamma rays in mixed-radiation fields.

Original language	English
Pages (from-to)	3833-3840
Number of pages	8
Journal	Nuclear Engineering and Technology
Volume	54
Issue number	10
DOIs	https://doi.org/10.1016/j.net.2022.06.016
Publication status	Published - 2022 Oct

Bibliographical note

Funding Information:
This work was supported by National Research Foundation of Korea (NRF) ( 2017M2A8A4017932 , NRF-2018R1D1A1A02048400 , and NRF-2020R1A2C2007376 ), and Korea Environmental Industry & Technology Institute (KEITI) through Subsurface Environment Management (SEM) Project, funded by Korea Ministry of Environment (MOE) ( 2018002440004 ).

Publisher Copyright:
© 2022 Korean Nuclear Society

Keywords

Compton scattering
Energy calibration
Intrinsic detection efficiency
Klein–Nishina formula
Organic scintillator
Stilbene scintillator

ASJC Scopus subject areas

Nuclear Energy and Engineering

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10.1016/j.net.2022.06.016

Cite this

@article{f96efa46371e41fc9f3418be4ae39491,

title = "Development of an energy and efficiency calibration method for stilbene scintillators",

abstract = "A method for calibrating the energy scale and detection efficiency of stilbene scintillators is presented herein. This method can be used to quantitatively analyze the Compton continuum of gamma-ray spectra obtained using such scintillators. First, channel–energy calibration was conducted by fitting a semiempirical equation for the Compton continuum to the acquired energy spectrum and a new method to evaluate the intrinsic detection efficiency, called intrinsic Compton efficiency, of stilbene scintillators was proposed. The validity of this method was verified by changing experimental conditions such as the number of sources being measured simultaneously and the detector–source distance. According to the energy calibration, the standard error for the estimated Compton edge position was ±1.56 keV. The comparison of the intrinsic Compton efficiencies calculated from the single- and two-source spectra showed that the mean absolute difference and the mean absolute percentage difference are 0.031 %p and 0.557%, respectively, demonstrating reasonable accuracy of this method. The feasibility of the method was confirmed for an energy range of 0.5–1.5 MeV, showing that stilbene scintillators can be used to quantitatively analyze gamma rays in mixed-radiation fields.",

keywords = "Compton scattering, Energy calibration, Intrinsic detection efficiency, Klein–Nishina formula, Organic scintillator, Stilbene scintillator",

author = "Chanho Kim and Jaehyo Kim and Wooseong Hong and Yeom, {Jung Yeol} and Geehyun Kim",

note = "Funding Information: This work was supported by National Research Foundation of Korea (NRF) ( 2017M2A8A4017932 , NRF-2018R1D1A1A02048400 , and NRF-2020R1A2C2007376 ), and Korea Environmental Industry & Technology Institute (KEITI) through Subsurface Environment Management (SEM) Project, funded by Korea Ministry of Environment (MOE) ( 2018002440004 ). Publisher Copyright: {\textcopyright} 2022 Korean Nuclear Society",

year = "2022",

month = oct,

doi = "10.1016/j.net.2022.06.016",

language = "English",

volume = "54",

pages = "3833--3840",

journal = "Nuclear Engineering and Technology",

issn = "1738-5733",

publisher = "Korean Nuclear Society",

number = "10",

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TY - JOUR

T1 - Development of an energy and efficiency calibration method for stilbene scintillators

AU - Kim, Chanho

AU - Kim, Jaehyo

AU - Hong, Wooseong

AU - Yeom, Jung Yeol

AU - Kim, Geehyun

N1 - Funding Information: This work was supported by National Research Foundation of Korea (NRF) ( 2017M2A8A4017932 , NRF-2018R1D1A1A02048400 , and NRF-2020R1A2C2007376 ), and Korea Environmental Industry & Technology Institute (KEITI) through Subsurface Environment Management (SEM) Project, funded by Korea Ministry of Environment (MOE) ( 2018002440004 ). Publisher Copyright: © 2022 Korean Nuclear Society

PY - 2022/10

Y1 - 2022/10

N2 - A method for calibrating the energy scale and detection efficiency of stilbene scintillators is presented herein. This method can be used to quantitatively analyze the Compton continuum of gamma-ray spectra obtained using such scintillators. First, channel–energy calibration was conducted by fitting a semiempirical equation for the Compton continuum to the acquired energy spectrum and a new method to evaluate the intrinsic detection efficiency, called intrinsic Compton efficiency, of stilbene scintillators was proposed. The validity of this method was verified by changing experimental conditions such as the number of sources being measured simultaneously and the detector–source distance. According to the energy calibration, the standard error for the estimated Compton edge position was ±1.56 keV. The comparison of the intrinsic Compton efficiencies calculated from the single- and two-source spectra showed that the mean absolute difference and the mean absolute percentage difference are 0.031 %p and 0.557%, respectively, demonstrating reasonable accuracy of this method. The feasibility of the method was confirmed for an energy range of 0.5–1.5 MeV, showing that stilbene scintillators can be used to quantitatively analyze gamma rays in mixed-radiation fields.

AB - A method for calibrating the energy scale and detection efficiency of stilbene scintillators is presented herein. This method can be used to quantitatively analyze the Compton continuum of gamma-ray spectra obtained using such scintillators. First, channel–energy calibration was conducted by fitting a semiempirical equation for the Compton continuum to the acquired energy spectrum and a new method to evaluate the intrinsic detection efficiency, called intrinsic Compton efficiency, of stilbene scintillators was proposed. The validity of this method was verified by changing experimental conditions such as the number of sources being measured simultaneously and the detector–source distance. According to the energy calibration, the standard error for the estimated Compton edge position was ±1.56 keV. The comparison of the intrinsic Compton efficiencies calculated from the single- and two-source spectra showed that the mean absolute difference and the mean absolute percentage difference are 0.031 %p and 0.557%, respectively, demonstrating reasonable accuracy of this method. The feasibility of the method was confirmed for an energy range of 0.5–1.5 MeV, showing that stilbene scintillators can be used to quantitatively analyze gamma rays in mixed-radiation fields.

KW - Compton scattering

KW - Energy calibration

KW - Intrinsic detection efficiency

KW - Klein–Nishina formula

KW - Organic scintillator

KW - Stilbene scintillator

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DO - 10.1016/j.net.2022.06.016

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SN - 1738-5733

VL - 54

SP - 3833

EP - 3840

JO - Nuclear Engineering and Technology

JF - Nuclear Engineering and Technology

IS - 10

ER -

Development of an energy and efficiency calibration method for stilbene scintillators

Abstract

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Keywords

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