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$Synthesis and Microdiffraction at Extreme Pressures and Temperatures$

Synthesis and Microdiffraction at Extreme Pressures and Temperatures

Published on: October 7, 2013

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

A Sano-Furukawa¹, T Hattori¹, H Arima²

¹Quantum Beam Science Center, Japan Atomic Energy Agency, Ibaraki 319-1195, Japan.

The Review of Scientific Instruments

|November 29, 2014

Summary

This summary is machine-generated.

Researchers developed ATSUHIME, a novel six-axis multi-anvil press, enabling high-pressure and high-temperature neutron diffraction. This tool advances in situ studies of crystal and liquid structures under extreme conditions.

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High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions

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Published on: October 10, 2014

Area of Science:

Materials Science
Geophysics
Condensed Matter Physics

Background:

High-pressure and high-temperature experiments are crucial for understanding material behavior.
In situ neutron powder diffraction offers unique insights into structural changes.
Existing equipment limitations hinder simultaneous high-pressure, high-temperature, and neutron diffraction studies.

Purpose of the Study:

To develop and characterize a novel six-axis multi-anvil press for advanced in situ neutron diffraction.
To enable precise control over extreme pressure and temperature conditions for sample analysis.
To overcome limitations of previous experimental setups for materials research.

Main Methods:

Design and construction of the ATSUHIME six-axis multi-anvil press with individual hydraulic rams.
Utilizing 6-6-type and 6-8-type cell assemblies for varying pressure-temperature regimes.
Integration of diffraction aperture, incident slit, radial collimators, and neutron imaging camera.

Main Results:

The ATSUHIME press achieves pressures up to 9.3 GPa at 2000 K (6-6 assembly) and 16 GPa at 1273 K (6-8 assembly).
Sufficient sample volume (approx. 50 mm³) is maintained.
High-quality diffraction patterns were obtained without contamination, due to the press's design and collimation setup.

Conclusions:

The ATSUHIME press is a significant advancement for in situ time-of-flight neutron powder diffraction.
It provides a versatile tool for investigating the structural properties of crystals and liquids under extreme conditions.
This development opens new avenues for materials science and geophysics research.