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Response function and photon interaction of LaBr3:Ce and BGO scintillation detectors by Monte Carlo simulation by C. Mutuwong; C. Bootjomchai; W. Chaiphaksa; S. Yonphan; S. Kothan; J. Kaewkhao is a Engineering article available to read on EtoBox.

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This work aims to investigate the response function and photon interaction of the LaBr 3 :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 133 Ba, 137 Cs, and 60 Co 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 LaBr 3 :Ce and BGO detectors tend to decrease as energy increases. Moreover, the total atomic cross-section (σ t,a ), effective atomic number (Z eff ) and effective electron density (N eff ) 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 σ t,

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Author

C. Mutuwong; C. Bootjomchai; W. Chaiphaksa; S. Yonphan; S. Kothan; J. Kaewkhao

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)