Investigation was concentrated upon the use of a small-diameter wire as a fine- line gamma ray radiation source because ... which provides the maximum sensitivity, dl/dp (the change in intensity of the beam with change in density of the material). ... The resolution is dependent on (6) the diameter of the source, the distance between the source and the object, the ... The d/t ratio for this source diameter was only approximately 2.5; however, a high contrast will permit a delineation of theanbsp;...
|Title||:||Symposium on Nondestructive Tests in the Field of Nuclear Energy|
|Author||:||American Society for Testing and Materials|
|Publisher||:||ASTM International - 1958|