3D-CT imaging using characteristic X-rays and visible lights produced by ion micro-beam bombardment

K. Ishii, S. Matsuyama, H. Yamazaki, Y. Watanabe, Y. Kawamura, T. Yamaguchi, G. Momose, Y. Kikuchi, A. Terakawa, W. Galster

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6 Citations (Scopus)


We improved the spatial resolution of a 3D-CT imaging system consisting of a micro-beam and an X-ray CCD camera of 1 mega pixels (Hamamatsu photonics C8800X), whose element size is 8 μm × 8 μm providing an image size of 8 mm × 8 mm. A small ant of ∼6 mm body length was placed in a small tube, rotated by a stepping motor, and a spatial resolution of 4 μm for X-ray micron-CT using characteristic Ti-K-X-rays (4.558 keV) produced by 3 MeV proton micro-beams was obtained. We applied the X-ray micron-CT to a small ant's head and obtained the fine structures of the head's interior. Because the CCD is sensitive to visible light, we also examined the capability of light micron-CT using visible red light from an Al2O3(Cr) ruby scintillator and applied the micron-CT to a small red tick. Though the red tick is highly transparent to Ti-K-X-rays, visible red light does not penetrate through the red tick. The most serious problem was dispersion of lights due to Thomson scattering resulting in obscure projection images.

Original languageEnglish
Pages (from-to)726-729
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Issue number1-2 SPEC. ISS.
Publication statusPublished - 2006 Aug


  • 3D-CT
  • Ion micro-beam
  • Micron-CT
  • Monochromatic X-ray point source
  • PIXE
  • X-ray CCD camera


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