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A diamond anvil cell (DAC) for high-pressure neutron diffraction experiments has been developed at the PLANET beamline, Materials and Life Science Experimental Facility, in J-PARC. The conically supported diamond anvils were used for high-pressure generation. We succeeded in obtaining the neutron data for D2O ice up to 69.4 GPa. In addition, the gasket materials suitable for the neutron diffraction measurements were investigated. 11 kinds of alloys were tested and SUS304, Inconel718 and M2052 (73Mn-20Cu-5Ni-2Fe, at%) alloys showed excellent performance. Especially, M2052 null-matrix alloy has proven to be useful for neutron diffraction experiments where the beam inevitably hits the gasket. We then obtained refinable neutron diffraction profiles in Rietveld analysis from D2O ice at least up to 43.3 GPa.

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• In Copyright
  

Keyword: diamond anvil cell , high-pressure, neutron diffraction, gasket material, null-matrix alloy

Date published: 2024-09-01

Publisher: The Japan Society of High Pressure Science and Technology

Journal:

• The Review of High Pressure Science and Technology (ISSN: 0917639X) vol. 34 issue. 3 p. 134-142

Funding:

• 日本学術振興会 24K01445 (中性子実験により探る低温超高圧下の氷物質の構造物性)

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.4131/jshpreview.34.134

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Updated at: 2025-04-02 12:30:14 +0900

Published on MDR: 2025-04-02 16:22:53 +0900