Zernike-type phase-contrast hard X-ray microscope with a zone plate at the Photon Factory

Hiroki Yokosuka, Norio Watanabe, Takuji Ohigashi, Yasutoshi Yoshida, Shunichi Maeda, Sadao Aoki, Yoshio Suzuki, Akihisa Takeuchi, Hidekazu Takano

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


A Zernike-type phase-contrast X-ray microscope with a zone plate and a phase plate was constructed at the Photon Factory BL3C2. Parallel monochromatic X-rays of 8.97 keV were incident on a specimen and a direct beam transmitted through the specimen was focused on the back focal plane of the zone plate, where an aluminium phase plate was placed. Tantalum line patterns as fine as 0.3 μm could be imaged. Phase-contrast images of polypropylene wires and polystyrene latex beads were obtained, which showed better contrast than that of their bright field images.

Original languageEnglish
Pages (from-to)179-181
Number of pages3
JournalJournal of Synchrotron Radiation
Issue number3
Publication statusPublished - 2002 May 1
Externally publishedYes


  • Hard X-rays
  • Phase contrast
  • X-ray microscopes
  • Zone plates

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Instrumentation


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