辐射分为电离辐射和非电离辐射两类。电离辐射是一种有足够能量使电子离开原子所产生的辐射,χ射线、α射线、β射线、γ射线、质子和中子等都属于电离辐射。在人类的生活中,自然界的天然辐射主要来源于太阳、宇宙射线和在地壳中存在的放射性核素;其次 Radiation is divided into ionizing radiation and non-ionizing radiation. Ionizing radiation is radiation that has enough energy to cause electrons to leave the atom. X-rays, alpha rays, beta rays, gamma rays, protons, and neutrons all belong to ionizing radiation. In human life, the natural radiation of nature originates mainly from the sun, cosmic rays, and radionuclides present in the earth’s crust;