Geant4 simulation of energy deposition ratio and physical processes of CdZnTe crystals irradiated by high energy particles

Cao, Meng; Deng, Jiahao; He, Weifan; Zhou, Yongjie; Xie, Runzhang; Jiang, Yucheng; Wang, Linjun

doi:10.1007/s00339-023-06862-0

Appl. Phys. A

2023

DOI: 10.1007/s00339-023-06862-0

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Geant4 simulation of energy deposition ratio and physical processes of CdZnTe crystals irradiated by high energy particles

Meng Cao,

Jiahao Deng,

Weifan He

et al.

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Cited by 3 publications

References 9 publications

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Equivalence ionisation effect of 1 MeV electron and proton space particles and γ-rays on optical silica

Hu,

Xia,

Peng

et al. 2024

Appl. Phys. A

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Equivalence ionisation effect of 1 MeV electron and proton space particles and γ-rays on optical silica

Hu,

Xia,

Peng

et al. 2024

Appl. Phys. A

View full text Add to dashboard Cite

Simulation of displacement damage in Si & SiO2 caused by protons

Ye,

Lai,

Shen

et al. 2025

Radiation Physics and Chemistry

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Propagation mechanism of E’-center and NBOHC in fused silica induced by gamma-ray irradiation

Gao,

Qi,

et al. 2024

Opt. Mater. Express

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The degradation of optical transmittance induced by the propagation of point defects in fused silica under gamma-ray irradiation severely threatens the service life of optical components. Existing studies have recognized the importance of this issue through the testing of point defect content before and after irradiation. However, the specific evolution process of these point defects remains unclear. In this paper, experiments and deep potential molecular dynamics (DeePMD) simulations were performed to investigate the essence of degradation in optical transmittance and the propagation mechanism of point defects during gamma-ray irradiation. The results indicate that the optical transmittance significantly decreases within the range of 210 nm to 380 nm, and the degree of change increases with an increase in irradiation dose. The propagation of E’-center and nonbridging oxygen hole center (NBOHC) defect pairs is the fundamental cause for the decrease in transmittance. Both experimental and simulation results indicate that E’-centers and non-bridging oxygen hole centers (NBOHC) originate from the evolution of small rings (n=3 and 4). Additionally, DPMD simulations reveal that under the thermal history induced by gamma-ray irradiation, the formation of small rings (n=3 and 4) occurs at the expense of larger rings (n=6 and 7). The research results provide valuable insights into the propagation mechanism of point defects and contribute to designing the service life of optical components.

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Geant4 simulation of energy deposition ratio and physical processes of CdZnTe crystals irradiated by high energy particles

Cited by 3 publications

References 9 publications

Equivalence ionisation effect of 1 MeV electron and proton space particles and γ-rays on optical silica

Equivalence ionisation effect of 1 MeV electron and proton space particles and γ-rays on optical silica

Simulation of displacement damage in Si & SiO2 caused by protons

Propagation mechanism of E’-center and NBOHC in fused silica induced by gamma-ray irradiation

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