SEDL / STP / STP716-EB / STP27503S

Basic Limits in Real-Time Industrial Radiographic Systems

Kuriyama, M
Supervisory physicist, metallurgist, and physical science technician, National Bureau of Standards, Washington, D.C.,

Boettinger, WJ
Supervisory physicist, metallurgist, and physical science technician, National Bureau of Standards, Washington, D.C.,

Burdette, HE
Supervisory physicist, metallurgist, and physical science technician, National Bureau of Standards, Washington, D.C.,

Pages: 15    Published: Jan 1980

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Abstract

Industrial applications of radiography presently demand improvements in resolution when radiographic images are viewed on a real-time basis. Unlike medical applications (radiology), the dosage of incoming X-rays or gamma-rays does not impose serious restrictions in industrial applications. In addition, many advances in the area of computer-assisted intensification of image signals allow us to reexamine the present techniques of radiography from a fresh viewpoint. As a consequence, we may be able to make a major advance in the improvement of resolution in real-time radiography. In this paper, we discuss (1) collimation of primary radiation, including apparent size of sources, (2) monochromatic radiography to obtain true signals, (3) resolution improvement by a magnification of X-ray images before the radiation reaches the detecting (or viewing) system and, briefly, (4) intensification of signals when crystal collimation is used.