In situ high-pressure measurement of crystal solubility by using neutron diffraction.

摘要: Crystal solubility is one of the most important thermo-physical properties and plays a key role in industrial applications, fundamental science, geoscientific research. However, high-pressure situ measurements crystal remain very challenging. Here, we present method involving neutron diffraction for making high-precision as function pressure over wide range pressures. For these experiments, designed piston-cylinder cell with large chamber volume diffraction. The solution pressures are continuously monitored based on equation state sample crystal. at high can be obtained by applying Rietveld quantitative multiphase analysis. To evaluate proposed method, measured NaCl water up to 610 MPa. At low pressure, results consistent previous ex situ. higher more reliable data could provided using an method.