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Radiation weighting factor

The quantity radiation weighting factor (wR) expresses the biological effectiveness of radiation for producing stochastic effects. The corresponding unit is sievert per becquerel (Sv/Bq). The radiation weighting factor is used in the conversion from absorbed dose (D) to equivalent dose (H).

radiation type energy (MeV) radiation weighting factor (wR)
photon 1
electron 1
neutron < 1 2.5 - 22
1 - 50 22 - 5.5
> 50 5.5 - 2.5
proton 2
heavy particle 20

Related quantities:

Last modified:16 January 2021 08.48 a.m.
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