Optical Density Formation in Track-Etch Radiography (Part A)

Abstract

Track-etch imaging is investigated as a recording method for neutron radiographic purposes. A theoretical model is formulated and evaluated together with experimental data which is analyzed in an attempt to explore the possibility of maximizing optical contrast. A central converter system with Lithium-6 as the converter and cellulose-nitrate as the recorders is used. It is found that the maximum contrast is achieved by using a clear cellulose-nitrate recorder at least 10 µm thick and a Lithium-6 converter of approximately 140 µm thickness.