Gamma field in water surrounding a duct containing a source.

Abstract

Radiation shielding requirements have imposed many problems on the nuclear field. Among these problems has been the determination or prediction of the effect of voids or air ducts on a gamma field. A number of related experiments have been conducted at Oak Ridge National Laboratory, Brookhaven National Laboratory, and the Nuclear Aerospace Research Facility. These have been directed toward verifying analytical methods for predicting the effects of ducts and voids.