Tungsten alloy is a non-toxic and environmentally-friendly alloy material. As a new radiation shielding material, tungsten alloy has a better shielding effect than the traditional radiation shielding material heavy metal lead. Research shows that for gamma rays of the same energy, the shielding effect of the new radiation shielding material tungsten alloy is far better than that of lead, which provides a reference for choosing tungsten alloy as a shielding material in special occasions, and provides a new choice in the selection of shielding materials in the field of radiation protection.
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Previously, people usually chose lead as a medical shielding material, such as lead shielding blocks on medical linear accelerators. However, lead is toxic. In nature, the three isotopes of lead 206Pb, 207Pb, and 208Pb are the final decay products of three natural radioactive series of uranium, actinide, and thorium series. In recent years, in order to prevent pollution and protect the environment, it has been proposed to replace lead radiation shielding materials with tungsten alloys. For example, lead shielding blocks on medical linear accelerators have been replaced with tungsten alloy multi-leaf collimator.
