X-ray powder diffractometer using synchrotron radiation at BL-4B in photon factory

X-Ray powder diffractometer for synchrotron radiation was designed and constructed at the experimental station BL-4B in Photon Factory, Tsukuba. Main characteristics of the hard ware and soft ware of the diffractometer are : 1) the accurate alignment of the optical axis can be done without special training, 2) the selection of X-ray wavelength in 4 digits can be attained with one calibration in a run of measurements, and 3) the soft ware supplies an easy operation of the diffractometer. (author)