High pressure gas vessels for neutron scattering experiments

TL;DR

This paper reviews high pressure gas vessel technology for neutron scattering, highlighting its applications, current materials, designs, and equipment used to achieve pressures up to 1.4 GPa with helium gas.

Contribution

It provides a comprehensive overview of high pressure gas vessel techniques and current technological developments for neutron scattering experiments.

Findings

Pressure range up to 1.4 GPa using helium gas

Materials and seal designs for high pressure vessels

Applications in studying phase transitions in solids

Abstract

The combination of high pressure techniques with neutron scattering proves to be a powerful tool for studying the phase transitions and physical properties of solids in terms of inter-atomic distances. In our report we are going to review a high pressure technique based on a gas medium compression. This technique covers the pressure range up to ~0.7GPa (in special cases 1.4GPa) and typically uses compressed helium gas as the pressure medium. We are going to look briefly at scientific areas where high pressure gas vessels are intensively used in neutron scattering experiments. After that we are going to describe the current situation in high pressure gas technology; specifically looking at materials of construction, designs of seals and pressure vessels and the equipment used for generating high pressure gas.