Note: Achieving quasi-hydrostatic conditions in large-volume toroidal anvils for neutron scattering to pressures of up to 18 GPa

Craig Bull, A. Bocian, H. Hamidov, K. V. Kamenev, Richard Nelmes, John Loveday

Research output: Contribution to journalArticlepeer-review

Abstract

We present developments that allow neutron-scattering experiments to be performed, with both single-crystal and powder samples, under quasi-hydrostatic conditions to pressures beyond previous limits. Samples of sodium chloride and squaric acid (H2C4O4) have been loaded with argon as the pressure-transmitting medium in encapsulated gaskets redesigned for double-toroidal anvils, using a gas-loading method at ambient temperature. These samples have been compressed up to 18 GPa in a Paris-Edinburgh press, and no evidence of peak broadening in either the single-crystal or the powder experiments was observed.

Original languageEnglish
Article number076101
Number of pages3
JournalReview of Scientific Instruments
Volume82
Issue number7
DOIs
Publication statusPublished - Jul 2011

Keywords

  • compressibility
  • gaskets
  • high-pressure effects
  • hydrostatics
  • neutron diffraction
  • organic compounds
  • powders
  • sodium compounds
  • DIFFRACTION
  • ISIS

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