GAMMA-RAY PENETRATION EXPERIMENTS FOR A LIGHT AIRCRAFT CARRIER USING DISTANT SOURCES AND SOURCES SIMULATING CONTAMINATION OF THE HULL
Abstract
The penetration of gamma rays into compartments of an aircraft carrier from two different radioisotopes was measured in 2 experiments. In 1 experiment, cobalt-60 and cesium-137 point isotropic sources were exposed near the hull of the ship to simulate hull contamination. Measurements of dose were made in the forward part of the ship at 4 different deck levels. Dose distribtuion data are presented for the 2 sources used and for the different source points considered. In the 2nd experiment, a nominal 500curie collimated cobalt-60 source was exposed at a distance of roughly 100 feet from designated points to irradiate 2 general regions of the ship. Dose distributions are presented for each of 18 source positions used. Five decks were instrumented in each of the 2 general regions considered. Diagrams indicating source positions, detector positions, and hull-plating thicknesses are presented. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 19, 1961
- Accession Number
- AD0269269
Entities
People
- M.b. Hastings
- S. Tomoeda
- W.g. Miller
Organizations
- Naval Radiological Defense Laboratory