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Title: Six-axis multi-anvil press for high-pressure, high-temperature neutron diffraction experiments

We developed a six-axis multi-anvil press, ATSUHIME, for high-pressure and high-temperature in situ time-of-flight neutron powder diffraction experiments. The press has six orthogonally oriented hydraulic rams that operate individually to compress a cubic sample assembly. Experiments indicate that the press can generate pressures up to 9.3 GPa and temperatures up to 2000 K using a 6-6-type cell assembly, with available sample volume of about 50 mm{sup 3}. Using a 6-8-type cell assembly, the available conditions expand to 16 GPa and 1273 K. Because the six-axis press has no guide blocks, there is sufficient space around the sample to use the aperture for diffraction and place an incident slit, radial collimators, and a neutron imaging camera close to the sample. Combination of the six-axis press and the collimation devices realized high-quality diffraction pattern with no contamination from the heater or the sample container surrounding the sample. This press constitutes a new tool for using neutron diffraction to study the structures of crystals and liquids under high pressures and temperatures.
Authors:
;  [1] ;  [2] ;  [3] ;  [4] ; ; ;  [5] ; ;  [6]
  1. Quantum Beam Science Center, Japan Atomic Energy Agency, Ibaraki 319-1195 (Japan)
  2. (Japan)
  3. Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan)
  4. The University of Shiga Prefecture, Shiga 522-8533 (Japan)
  5. Sumitomo Heavy Industries Co., Ltd., Ehime 792-0001 (Japan)
  6. Geochemical Research Center, Graduate School of Science, The University of Tokyo, Tokyo 113-0033 (Japan)
Publication Date:
OSTI Identifier:
22392237
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; APERTURES; CAMERAS; COLLIMATORS; NEUTRON DIFFRACTION; PRESSES; PRESSURE RANGE GIGA PA; PRESSURE RANGE MEGA PA; PUMPS; TEMPERATURE RANGE 0400-1000 K