Surveillance: Radiographic imaging with cosmic-ray muons

@article{Borozdin2003SurveillanceRI,
  title={Surveillance: Radiographic imaging with cosmic-ray muons},
  author={Konstantin N. Borozdin and Gary Elliott Hogan and Christopher Morris and William C. Priedhorsky and Alexander Saunders and L. J. Schultz and Margaret E. Teasdale},
  journal={Nature},
  year={2003},
  volume={422},
  pages={277-277}
}
Despite its enormous success, X-ray radiography has its limitations: an inability to penetrate dense objects, the need for multiple projections to resolve three-dimensional structure, and health risks from radiation. Here we show that natural background muons, which are generated by cosmic rays and are highly penetrating, can be used for radiographic imaging of medium-to-large, dense objects, without these limitations and with a reasonably short exposure time. This inexpensive and harmless… 

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