XBS / XBT

X-ray Backscatter/X-ray Backscatter Technology is an alternative non-destructive testing (NDT) technique to the conventional X-ray technique that is typically used. In conventional X-ray (radiography), the source and the film/detector are positioned on opposite sides of the component. In the XBS technique, the imaging detector is placed alongside the X-ray tube on the same side of the component.

XBS is based on the Compton scattering effect. Organic and non-organic materials scatter the X-rays with different intensities, allowing high-contrast images to be produced. As with many NDT techniques, optimum performance requires careful selection of parameters and knowledge of the scattering effects of the objects being inspected. The XBS technique is used for security screening of suspicious material in baggage and vehicles, including containers. Hand-held XBS sensors are available.

For more information on XBS/XBT, see:
www.rapiscan-ase.com/resource-center/technology/z-backscatter-x-ray-imaging

For an illustration of the comparison of XBS and conventional through- transmission X-rays, see:
www.gov.uk/government/news/x-ray-robot-could-save-lives-on-the-battlefield

WHAT THE HEC?! articles are not intended to be the definitive account on the topic or acronym in question. Readers’ comments and contributions are welcomed. Email: ndtnews@bindt.org