On the Polynomial Form of Gamma-Ray Buildup Factor Functions

A three-parameter polynomial form of the buildup factor function was introduced. The parameters were calculated for aluminum, water, and iron. It was found that buildup factors calculated by these polynomials, in most cases, were more accurate than those using the Taylor, Berger, Capo, or quadratic (Trubey) formulas when compared with Goldstein-Wilkins data.