Energy Absorption Coefficient
Energy Absorption Coefficient :
Of a substance, for a parallel beam of specified radiation: the quantity en in the expression endx for the fraction removed by attenuation in passing through a thin layer of thickness dx of that substance. It is a function of energy of the radiation. As dx is expressed in terms of length, mass per unit area, moles per unit area, or atoms per unit area, en is called the linear, mass, molar, or atomic energy absorption coefficient. NOTE: It is that part of the attenuation coefficient resulting from energy absorption only, and is equal to the product of the energy transfer coefficient and 1-g, where g is the fraction of the energy of secondary charged particles that is lost to bremstrahlung in the material
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