High-pressure and high-temperature neutron-diffraction experiments using Kawai-type multi-anvil assemblies. Issue 1 (2nd January 2021)

• Record Type: Journal Article
• Authors: Sano-Furukawa, Asami; Kakizawa, Sho; Shito, Chikara; Hattori, Takanori; Machida, Shinichi; Abe, Jun; Funakoshi, Ken-ichi; Kagi, Hiroyuki
• Is Part Of: High pressure research. Volume 41:Issue 1(2021)
• Page Start: 65
• Page End: 74
• Publication Date: 2021-01-02
• Subjects: Neutron-diffraction -- Kawai-type multi-anvil assembly -- MA6-6 -- MA6-8 -- high-pressure; High pressure (Science) -- Periodicals; High pressure (Technology) -- Periodicals; 536.41
• DOI: 10.1080/08957959.2020.1867723
• Languages: English
• ISSNs: 0895-7959

Abstract

ABSTRACT: We applied Kawai-type multi-anvil assemblies (MA6-8) for time-of-flight neutron-diffraction experiments to achieve high-pressures and high-temperatures simultaneously. To achieve sufficient signal intensities, the angular access to the sample was enlarged using slits and tapers on the first-stage anvils. Using SiC-binder sintered diamond for the second-stage anvils that transmits neutrons, sufficient signal intensities were achieved at a high-pressure of ∼23.1 GPa. A high-temperature experiment was also conducted at 16.2 GPa and 973 K, validating the use of tungsten carbide for the second-stage anvils. The present study reveals the capability of the MA6-8 cells in neutron-diffraction experiments to attain pressures and temperatures beyond the limits of the conventional MA6-6 cells used in the high-pressure neutron diffractometer PLANET at the MLF, J-PARC.