Time of flight powder diffractometer with supermirror guide

Sirius, recently installed at KENS, is the world first time-of-flight neutr on powder diffractometer with 28.5 m supermirror guide tube. It has realize d both the highest resolution and intensity in Japan. Adoption of supermirr or guide enables us to incorporate short-wavelength neutrons into structure analyses. This, together with the high resolution, does not only improve t he accuracy of refined atomic coordinates in Rietveld refinements, but also extend a possibility of powder diffraction beyond average structure analys es. (C) 1999 Elsevier Science Ltd. All rights reserved.