The Absorption of Incident Quanta by Atoms as Defined by the Mass Photoelectric Absorption Coefficient and the Mass Scattering Coefficient

Evidence presented indicates that the absorption of quanta as defined by the mass photoelectric absorption coefficient τ/ρ and the mass scattering coefficient σ/ρ of any element may be represented by a simple expression. Tabulated values of the calculated mass absorption coefficients μ/ρ are given for wave-lengths from 0.01 to 40 angstroms for hydrogen and carbon and from 0.01 to λK and λK to λL for aluminum, copper, tin, and lead. Graphs are given showing agreement with observed values.