High-pressure neutron study on silica glass at J-PARC high-pressure neutron diffractometer PLANET

Hattori, Takanori   ; Yagafarov, O.*; Katayama, Yoshinori; Chiba, Ayano*; Sano, Asami   ; Inamura, Yasuhiro  ; Otomo, Toshiya*; Matsuzaki, Yuki*; Shimojo, Fuyuki*

We recently constructed the diffractometer dedicated to high-pressure purpose at pulsed neutron source J-PARC. This beamline has the huge 6-axis multi-anvil press, which is good at generating high-pressure and high-temperature condition simultaneously. By developing devices to eliminate scattering from materials around the sample, such as a sample container, a heater, we can obtain very clear pattern even under high-PT condition. This enables us to analyze the PT dependence of the structure of amorphous solids and liquids with high quality. I will explain the performance of the beamline and the PT modification of SiO glass.