In the calculation of equivalent dose, which radiation type has a radiation weighting factor of 20?

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Multiple Choice

In the calculation of equivalent dose, which radiation type has a radiation weighting factor of 20?

Explanation:
Equivalent dose reflects how damaging an absorbed dose is, not just how much energy is deposited. To account for different biological effects, we multiply the absorbed dose by a radiation weighting factor. Alpha particles have a high weighting factor of 20 because they deposit energy very densely along their short path (high LET), causing more biological harm per unit energy than other radiations. So, 1 gray of alpha radiation is treated as 20 sieverts in terms of potential biological effect, whereas gamma rays or X-rays, and beta particles, have a weighting factor of 1, making 1 Gy equal to 1 Sv for those types.

Equivalent dose reflects how damaging an absorbed dose is, not just how much energy is deposited. To account for different biological effects, we multiply the absorbed dose by a radiation weighting factor. Alpha particles have a high weighting factor of 20 because they deposit energy very densely along their short path (high LET), causing more biological harm per unit energy than other radiations. So, 1 gray of alpha radiation is treated as 20 sieverts in terms of potential biological effect, whereas gamma rays or X-rays, and beta particles, have a weighting factor of 1, making 1 Gy equal to 1 Sv for those types.

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