High-Pressure Neutron Diffractometer PLANET

Abstract

PLANET is a time-of-flight (TOF) neutron beamline dedicated to high-pressure experiments. By using several high-pressure devices, neutron diffraction patterns are obtainable at wide PT condition, ranging from 0-20 GPa and 77 K-2000 K. To obtain clean pattern, the beamline is equipped with the incident slits and receiving collimators to eliminate parasitic scattering from the high-pressure cell. The high performance of the diffractometer with the resolution (Δd/d ~ 0.6%) and the accessible d-spacing range (0.2–8.4 Å) together with low-parasitic scattering characteristics enables precise structure determination of crystals and liquids even under high-pressure and high-temperature conditions.