Nuclear Radiation Shielding
Nuclear radiation can be broadly classified into three categories. These three categories are labeled with the first three letters of the Greek alphabet: ά (alpha), β (beta) and γ (gamma). Alpha radiation consists of a stream of fast-moving helium nuclei (two protons and two neutrons). As such, an alpha particle is relatively heavy and carries two positive electrical charges. Beta radiation consists of fast-moving electrons or positron (an antimatter electron). A beta particle is much lighter than an alpha, and carries one unit of charge. Gamma radiation consists of photons, which are without mass and carry no charge. X-rays are also photons, but carry less energy than gammas. Some materials absorb beta rays. You can measure this absorption by fixing beta source and a radiation monitor so their positions do not change.
Damage of nuclear radiation
Principles of nuclear radiation protection
The three governing principles of radiation protection are time, distance, and shielding. Doss can be minimized by limiting the time of exposure, by maximizing the distance to the source, and by providing shielding to attenuate the radiation.
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