Attenuation
I(z) = I₀ exp(−βz).
β is the calibrated attenuation coefficient in inverse length. With illumination from two faces, sum the independently attenuated contributions. Surface intensity is not the intensity everywhere in a thick or absorbing laminate.
Calibrated reaction rate
dα/dt = k(T) Iᵐ f(α); reaction heat source q̇ = ρ H_r dα/dt.
This generic rate structure needs a material-specific intensity exponent, conversion dependence and kinetic calibration. It illustrates the coupling; use the exact selected CDS rate law and units. Reaction heat changes temperature, which can change reaction rate.
Interpretation
Dose(z) = ∫ I(z,t) dt.
Equal integrated dose does not guarantee equal conversion when kinetics, temperature and exposure rate differ. Compare through-thickness conversion and temperature, not surface dose alone. The reduced model does not resolve scattering, photobleaching or oxygen inhibition unless explicitly included and calibrated.
These explanations describe general mechanics and transport principles. Follow the selected Workbench model’s supported mechanisms, calibration and limitations.