BEYOND X-RAYS: SEEING BENEATH THE SURFACE WITH NEUTRON PHOTOGRAPHY

Neutron radiography is one step beyond x-radiography since it can penetrate materials such as lead that ordinary x-rays cannot. The basic difference between neutron radiography, currently being researched at the National Bureau of Standards, and x-radiogrphy is that neutrons only interact with the nucleus of an atom, and not with the electrons in orbit as is the case with x-rays. Although neutron radiography is a relatively new technique, it has already been applied successfully in such projects as detecting flaws and contaminants in composite materials of aerospace and electronic components, detecting corrosion on aircraft assemblies, inspecting explosive materials for defects, inspecting nuclear instruments, and examining pathological specimens. Work is currently being done in conjunction with the American Society for Testing and Materials to furnish standards for improved quality in neutron radiographs, and to develop better detectors for neutron radiography, such as "real-time" television methods Neutron radiography is certainly far from being as commonplace as x-radiography, although it is receiving more widespread application. Its increased use depends on factors such as a portable source of neutrons like that for x-rays. Progress is being made, however, and neutron radiography will probably be in everyday use as a nondestructive testing method in the near future.

  • Corporate Authors:

    National Bureau of Standards

    Department of Commerce, Office of Technical Publications
    Washington, DC  United States  20234
  • Publication Date: 1975-5

Media Info

  • Features: Photos;
  • Pagination: 3 p.
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00097632
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 30 1975 12:00AM