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Well, to tell you the truth, it doesn’t even exist. A radioactive source emits three types of radiation: alpha, beta and gamma rays. Alpha rays can be stopped by a simple sheet of paper. Avoiding beta rays is more complicated: a thick sheet of lead or aluminum would be needed. But only a massive lead chamber, with walls a foot thick, could block the most dangerous gamma rays. We agree that it would be difficult to produce an outfit like this…
The “anti-radiation” suits that appear in films only prevent contamination by radioactive chemical elements – atoms of uranium, argon or cesium, which can be suspended in the air after being leaked in a reactor or an X-ray machine, for example. . “When inhaled or absorbed by the skin, these atoms would constantly radiate inside the body”, says nuclear engineer Rajendra Saxena, from the Nuclear and Energy Research Institute (IPEN), in São Paulo. These clothes are nothing special: they are, in general, made of plastic and it is enough that they are waterproof, hermetically sealed, difficult to tear and easy to wash. In addition, you need to use an oxygen tank to avoid breathing contaminated air.