Design of small-angle X-ray diffractometer using synchrotron radiation at the photon factory

• DOI: 10.1016/0167-5087(83)91170-5
• Publication Date: 2002-11-12T00:12:24Z
• Authors: Yoshiyuki Amemiya; Katsuzo Wakabayashi; Toshiaki Hamanaka; Takeyuki Wakabayashi; Tadashi Matsushita; Hiroo Hashizume
• Keywords: Monochromator; Diffractometer; X-ray optics

Abstract A demagnifying focusing mirror-monochromator optics has been designed and constructed for time-resolved X-ray diffraction studies of biological substances. Focusing in the vertical plane is performed by a sequence of seven 20 cm long bent mirrors. Focusing in the horizontal plane is performed by a bent triangular silicon crystal monochromator which is placed downstream of the mirror. Phase space calculations predict that the optics should produce a focus 1.0 mm (V)×2.6 mm (H) (4σ-value) at the focus point. When the PF storage ring operates at 2.5 GeV and 0.5 A, the intensity is expected to be 10 11 –10 12 photons/s. A small-angle resolution of better than 1000 A should be obtainable at 1.5 A wavelength with an angular resolution of 0.8 mrad and 0.6 mrad in the vertical and horizontal directions, respectively.