1, take shielding measures.
Adding a shielding layer thick enough between the human body and the radiation source can reduce the external radiation dose. The main materials are lead, reinforced concrete and water. The building where we live is a good barrier against external radiation. If you are in a nuclear radiation environment, it is recommended to avoid going out as much as possible and stay indoors and other closed spaces. If you must go out, it is recommended to cover your mouth and nose with a wet towel or wear a mask.
2. Add more long-sleeved clothes.
Especially rain-proof silk clothes. Personal physical protection measures can be chemical protective clothing, acid and alkali protective clothing and nuclear radiation protective clothing. If you come into contact with radioactive substances on your skin or clothes, clean them up in time to avoid further pollution. If you need to eat dairy products, you should pay attention to processing them in special processing places before eating them.
Causes of nuclear radiation
Since humans appeared on the earth, natural radiation has come from natural radiation sources. This naturally occurring radiation source is called natural radiation source, and this kind of radiation is called natural radiation. Natural radiation sources mainly come from cosmic rays, cosmic radionuclides and primary radionuclides.
Cosmic rays come from the sun and interstellar space and are mainly composed of high-speed particles such as neutrons, protons, electrons and various mesons. These particles have strong penetrating ability and can radiate to the earth, but when they pass through the atmosphere, their energy is completely lost, so external irradiation to human body does not pose radiation health hazards. The intensity of cosmic rays increases exponentially with the increase of altitude, so the radiation of cosmic rays to human beings can not be ignored when traveling or flying in space or plateau.