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:28 October 2025 3.24 p.m.
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