為什么鉛可以用來防護伽馬射線而不適合用于防護中子？
射線防護射線遇到物質時會和物質產生相互作用，結果導致射線的強度變弱，這個變弱的程度和物質的原子序數和密度有關系，原子序數越大、密度越大，使射線衰減的能力越強。理論上，用任何物質都可以去防護射線，但用量不同，鉛的原子序數和密度都比較大，是常用的防護射線的物質
而中子防護是為保護工作人員不受或少受中子輻射而設置的防護物。它與γ射線防護不同，用輕元素制成，以使中子很快減速。其中慢化能力非常好的是含氫物質，如水、石蠟等。

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Why can lead be used to protect against gamma rays rather than neutrons?
The radiation protection ray will interact with the substance when it encounters the substance, resulting in the attenuation of the intensity of the ray. The degree of attenuation is related to the atomic number and density of the substance. Theoretically, any substance can be used to protect the radiation, but different amounts of lead, the atomic number and density are relatively large, is commonly used to protect the radiation material
Neutron protection is a protection for protection against or less neutron radiation. It is different from gamma ray protection and must be made of light elements to slow down neutrons quickly. Among them, the ability to slow down is very good is hydrogen-containing material, such as water, paraffin.

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