THE ATTENUATION OF Au-198 GAMMA RAYS IN AN 11-INCH STEEL DUCT.
Abstract
Gamma-ray dose-attenuation factors were measured in an 11-inch square steel duct using a Au-198 (0.412 Mev) gamma-ray source. These attenuation factors were compared with those found using Cs-137 (0.662 Mev) and Co-60 (1.25 Mev) gamma-ray sources. It was found that the attenuation factor for Au-198 was always greater than for Cs-137. However, for short second legs, the attenuation factor for Co-60 was greater than both Au-198 and Cs-137. The measured attenuation factors for Au-198 were compared with values obtained using a computer code based on the albedo concept. It was found that calculated attenuation factors are about 20% higher than measured attenuation factors.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1966
- Accession Number
- AD0684456
Entities
People
- J. M. Chapman
Organizations
- Naval Facilities Engineering Service Center