Transmission

The quantity transmission (T) describes the fraction of the impinging radiation that passes a layer of matter. In the case of electromagnetic radiation, the transmission is described by the buildup factor (B) and an exponential function, both of which depend on attenuation coefficient (μ) and thickness of the absorbing layer (d):

T(μ,d) = B(μ,d) e^-μd

Related quantities

• attenuation coefficient
• buildup factor
• dose conversion coefficient
• half-value thickness
• inverse-square law
• kerma-rate constant
• radiotoxicity equivalent