H = w_R · D: w_R(photon)=1, w_R(α)=20, w_R(neutron)=f(E)

Dosimetric quantities for radiation protection. Absorbed dose D (units gray, 1 Gy = 1 J/kg) is the physical energy deposited per unit mass — directly measurable by calorimetry or ionisation chamber at TG-51 calibration. Equivalent dose…