PDF analysis at high pressures in PLANET; Current states and limitations

Hattori, Takanori   

In this talk, I introduce the current status and limitation of pdf analyses under high pressure conditions at high-pressure neutron diffractometer PLANET in J-PARC. As the examples, I introduce structural changes of silica glass under high-pressure and high-temperature condition revealed by experiments using a six-axis press, those of water and aqueous solution at room temperature and high pressures and structural changes of silica glass up to 17 GPa with a Paris-Edinburg press. Furthermore, I introduce the method to analyze the data taken at PLANET, a trial and the limitation of pdf analysis at high pressures, and a development of the diamond sample container for structure analysis of water under high-PT condition.