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Tungsten Decay Radiation Shielding

What is Tungsten Decay Radiation Shielding?

An energetic electron can scatter easily from a nucleus, because it is so light, losing energy by radiation (accelerated charged particles radiate). The radiation appears in a secondary "bremsstrahlung" (breaking radiation) photon. Then decay is caused. This process can be used to generate continuous energy-spectrum X-rays. Also it could happen in the isotopes decay, such as 137 Cs can decay via two routes to the 137Ba nuclear ground. To avoid any radiation from this process, a kind of excellent radiation protector needed badly, and research states that tungsten should be the most suitable material for decay radiation shielding.

The Applications of Tungsten Decay Radiation Shielding

Due to its high density, excellent decay radiation absorption and environmental friendly, tungsten can be used to produce tungsten decay radiation shielding.

As the density rages from 17.0g/cm3 to 18.5g/cm3, tungsten material could absorb the same radiation energy with the less thickness than the lead. Therefore, it could be used for shielding the heavy decay radiation with smaller capacity. For example, beta particles are produced in a three-body decay and, therefore, have various energies, depending on the share taken by the associated anti-neutrino and the share (quite small) taken by the recoiling daughter nucleus. So the total energy is conserved, but the partition varies for individual decay events. Then there is a maximum beta energy so called the "end point" energy caused. In this case, tungsten decay radiation shielding could have a better performance than other material such as lead.

The Advantages of Tungsten Decay Radiation Shielding

Tungsten has its high density and good machinability, owning more than 60% higher density than lead, which are competitive for decay radiation shielding applications. They can be used to mitigate X-ray, gamma rays and any other decay from the isotopes. Also they are high temperature resistant and environmental friendly, it is more and more popular than lead, as it is no-toxic.

During design of shielding, tungsten radiation shielding is calculated according to requirements of shield to abate the multiple shielding materials' thickness.
Formula: K=e0.693 d / △1/2
K: Shield weakened multiple
△ 1/2: The tungsten alloy radiation shielding material of the half-value layer values

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