Dose : energy absorbed per kg absorbing material
D = Eabs/m
- D dose in Gy or J kg-1
- Eabs energy absorbed in J
- m mass in kg
The effect of the ionizing radiation depends among others on radiation type
This is represented by the quality factor Q.
Q for α-radiation is 20 and for β-radiation is 1.
H = Q Eabs/m
- H equivalent dose in Sv of J kg-1
- Q quality factor (no dimension)