Single-crystal x-ray diffraction at high pressures

Abstract

Construction and operation of a high-pressure single-crystal x-ray diffraction precession camera is described. The instrument appears applicable to single crystal studies to pressures as high as at least 30 kilobars and temperatures of at least 250 °C. Application of the instrument is illustrated by single crystal studies of ice VI and ice VII. Unit cell parameters are given for these two forms of ice. Further modifications and applications are discussed.