Wake Medical has the answer for you: All objects can block radioactive radiation, but different objects have different blocking effects on different rays. Generally speaking, heavy metals have the best blocking effect on low-energy radiation, such as commonly used lead. Generally, lead is mainly used for radiation protection in hospitals. For high-energy rays, the protective effect of lead decreases, while the protective effect of concrete increases. Therefore, high-energy particle machine rooms are made of thicker concrete and do not use lead for protection (which is relatively expensive). Thank you and hope to adopt it