Neutron diffraction at simultaneous high temperatures and pressures, with measurement of temperature by neutron radiography

Y. Le Godec, M. T. Dove*, D. J. Francis, S. C. Kohn, W. G. Marshall, A. R. Pawley, G. D. Price, S. A.T. Redfern, N. Rhodes, N. L. Ross, P. F. Schofield, E. Schooneveld, G. Syfosse, M. G. Tucker, M. D. Welch

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)

Abstract

The commissioning and operation of apparatus for neutron diffraction at simultaneous high temperatures and pressures is reported. The basic design is based on the Paris-Edinburgh cell using opposed anvils, with internal heating. Temperature is measured using neutron radiography. The apparatus has been shown in both on-line and off-line tests to operate to a pressure of 7 GPa and temperature of 1700°C. The apparatus has been used in a neutron diffraction study of the crystal structure of deuterated brucite, and results for 520°C and 5.15 GPa are presented. The diffraction data that can be obtained from the apparatus are of comparable quality to previous high-pressure studies at ambient temperatures, and are clearly good enough for Rietveld refinement analysis to give structural data of reasonable quality.

Original languageEnglish
Pages (from-to)737-748
Number of pages12
JournalMineralogical Magazine
Volume65
Issue number6
DOIs
Publication statusPublished - Dec 2001
Externally publishedYes

ASJC Scopus Subject Areas

  • Geochemistry and Petrology

Keywords

  • High pressure
  • High temperature
  • Neutron diffraction
  • Neutron radiography
  • Rietveld refinement

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