Response function and photon interaction of LaBr3:Ce and BGO scintillation detectors by Monte Carlo simulation

被引：0
|
作者：
Mutuwong C. [1 ]
Bootjomchai C. [1 ]
Chaiphaksa W. [2 ,3 ]
Yonphan S. [2 ,3 ]
Kothan S. [4 ]
Kaewkhao J. [2 ,3 ]
机构：
[1] Department of Physics, Faculty of Science, Ubon Ratchathani University, Warin Chamrap, Ubon Ratchathani
[2] Physics Program, Faculty of Science and Technology, Nakhon Pathom Rajabhat University, Nakhon Pathom
[3] Center of Excellence in Glass Technology and Materials Science (CEGM), Nakhon Pathom Rajabhat University, Nakhon Pathom
[4] Center of Radiation Research and Medical Imaging, Department of Radiologic Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai
来源：
Optik | 2023年 / 289卷
关键词：
BGO; Gaussian energy broadening; LaBr[!sub]3[!/sub]:Ce; Monte Carlo simulation;
D O I：
10.1016/j.ijleo.2023.171161
中图分类号：
学科分类号：
摘要：
This work aims to investigate the response function and photon interaction of the LaBr3:Ce and BGO scintillation detectors using the FLUKA Monte Carlo simulation software. To improve the realism of detectors, the DETGEB card was used to activate the gaussian energy broadening (GEB) function. The GEB parameters of both detectors were obtained by fitting a nonlinear curve to the relation between FWHM and gamma-ray energy. The energy resolution (R), peak-to-Compton ratio (PCR), peak-to-total ratio (PTR), and full-energy peak efficiency (FEPE) of both detectors were investigated by simulation and experiment at different gamma-ray energy obtained from 133Ba, 137Cs, and 60Co sources. The simulated spectra of those radioisotopes were found to agree with the actual spectra. The results found that the R, PCR, and FEPE values of the LaBr3:Ce and BGO detectors tend to decrease as energy increases. Moreover, the total atomic cross-section (σt,a), effective atomic number (Zeff) and effective electron density (Neff) of both crystals was investigated by FLUKA and compared with the XCOM theoretical program covering an energy range of 15 keV to 15 MeV. The simulated results of the σt,a, Zeff, and Neff are in excellent agreement with the theoretical ones. The GEB parameters obtained from this study will improve the simulation performance of LaBr3:Ce and BGO detectors in investigating the gamma-ray response and shielding properties of materials. © 2023 Elsevier GmbH
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