Angular variation of scattering volume and its implications for Compton scattering tomography

  • Balogun F
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If quantitative and qualitative precision is to be achieved in X-/γ- rays Compton scattering densitometry and tomography, the volume of interaction within which a useful signal is collected must be well defined and accurately estimated. This work presents a numerical study of the variation of scattering angles and collimator sizes. The effect of choosing back-scattering angles for measurement in both the densitometry and tomographic modes of this technique is studied. A symmetry is observed between the volume at forward and back scattering angles. A symmetry exists, however, within the scattering angle range 90 ± 30°. It is proposed that the best volume/spatial resolution in Compton scattering densitometry/tomography is obtainable within the above mentioned scattering angle range.

Author-supplied keywords

  • Compton scattering
  • Field of view
  • Tomography
  • Volume

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  • F. A. Balogun

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