Ionizing radiation is all can cause the material ionization radiation, collectively, and the nuclear industry system raw exploration, mining, smelting and finishing. The type many, the high-speed charged particles are alpha particles, beta particles, protons, charged particles have seeds and X-ray and gamma ray.

Alpha ray is a stream of charged particles, as charged, was easy due to ionization. Alpha rays have a strong ionization skill, which can be used in this kind of nature. Also bring a certain damage to the human body tissue damage. Due to its large mass, poor penetration, the air in the range of only and cm, as long as a piece of paper or healthy skin will be able to block.

Beta ray is a high-speed charged particles, the ionization skill than alpha is much smaller, but penetration skills than alpha, but with X and gamma rays than beta ray has a range of short, it is easy to be absorbing material of aluminum foil and organic glass.

The properties of X rays and gamma rays are roughly the same, the electromagnetic wave without wave length, so he called photons. Both of the penetrating power is very strong, to pay special attention to the accident radiation protection.

Ionizing radiation exists in the nature, but the artificial radiation has been widely used in various fields, specializing in production, use and study the ionization radiation for radiation workers. Radiation related occupations:

Nuclear fuel and reactors production, utilization and research; irradiation of agricultural cultivation of new varieties, fruit and vegetable safety, food storage; medical X-ray fluoroscopy and radiography diagnosis and radionuclide to human body organs were measured, on tumor radiation therapy; industrial departments of various speed device, X-ray generator and electronic microscope, electronic speed welding machine, color TV picture tube, high pressure tubes and so on.