No.7（2012）6.Development and evaluation of x-ray refractive lens for high-energy x-ray focusing

Daigo Kawahara

  An x-ray compound refractive lens (CRL) is suited for high resolution imaging with hard x-rays. We produced several prototype CRLs by machining holes in polystyrene and aluminum rods. We exposed imaging plates, positioned at various distances from the lens end, to hard X-rays that had passed through the CLR. Using this method, we confirmed the refraction of the hard X-rays.
  In this study, we improved the CRL and investigated the influence on x-rays; by machining a groove on a board we could increase the amount of transmitted x-rays. The developed CRLs obtained an increase in transmitted x-rays of 10-100times which is enough to be used in x-ray radiography. The focusing effects of the CRLs increased with decreasing x-ray energy.

Keywords
X-ray, Compound refractive lens, High resolution imaging

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