Determination of Li-Al alloy extent in tubular aluminum elements by small source neutron radiology.

摘要

Eddy current is the only nondestructive technique used to determine the extent of the Li--Al alloy in tubular aluminum target tubes. It was desired to have an independent nondestructive method to confirm the extent of the alloy at the tube ends. The method explored and described in this paper is to provide a neutron radioscopic image of 25 cm sections of each tube end. Two small-source neutron radiologic systems were used in this study, a mobile accelerator neutron radiography system and a californium-252 system. These two systems have been shown to provide an accurate alternative method for the determination of the extent of Li--Al alloy in target elements. 8 refs., 6 figs., 1 tab.