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Ultra-Efficient Gamma–Neutron Dual Shielding Window Based on Lu2Hf2O7 Transparent Ceramics
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DOI：10.1111/jace.70990.png)
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Abstract
En 中文
The development of high-performance shielding windows capable of attenuating both neutron and gamma radiation is critically important for nuclear applications. However, most existing windows are limited by single-ray shielding and severe irradiation coloration. To address this, high-density Lu2Hf2O7 transparent ceramics were developed in this work. The prepared ceramics exhibit high optical quality, with a maximum transmittance of 77.8%, approaching the theoretical limit of 78.8%. Benefiting from the high effective atomic number, efficient γ-ray attenuation is achieved, characterized by a linear attenuation coefficient of 0.745 cm−1, with a 1-cm-thick sample attenuating more than 50% of γ rays from a 137Cs source. In addition, Monte Carlo neutron transport simulations indicate effective neutron attenuation, with a 1.8-cm-thick sample reducing the 1 eV neutron flux by over 50%. These results demonstrate that Lu2Hf2O7 transparent ceramics provide a viable combination of optical transparency and γ-ray/neutron shielding, highlighting their potential for radiation-shielding window.
Keywords:
neutron and gamma ray
radiation shielding
transparent ceramic
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3.8
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