Angle-dispersive Diffraction Measurement Using a Radial Slit

Abstract

A newly developed angle-dispersive diffraction measurement system for highpressure experiments is reviewed. This system has an optical device called Radial Slit, which is consisted with multiple collimators aligned radially. This eliminates the diffraction from the materials surrounding the sample, so that we can measure diffraction from samples in a multi-anvil press by an imaging-plate (IP). Performance of the Radial Slit has been evaluated to be satisfactory, and diffraction patterns of crystal corundum and glassy silica have successfully been obtained using this system.