Nomogram for determining shield thickness for point and line sources of gamma rays

Abstract

A set of nomograms is given for the determination of the required shield thickness against gamma radiation. The sources handled are point and infinite line sources with shields of Pb, Fe, magnetite concrete (ϱ = 3.6), ordinary concrete (ϱ = 2.3) or water. The gamma energy range covered is 0.5 – 10 MeV. The nomograms are directly applicable for source and dose points on the surfaces of the shield. They can easily be extended to source and dose points in other positions by applying a geometrical correction.