A versatile automated sample changer for texture measurements on the high pressure-preferred orientation neutron...

Area of Science:

• Materials Science
• Neutron Scattering Physics
• Crystallography

Background:

• Neutron diffraction is a powerful technique for materials characterization.
• Automated sample handling is crucial for high-throughput neutron scattering experiments.
• Texture analysis provides insights into material microstructure and preferred orientation.

Purpose of the Study:

• To describe an automated sample changer with an Eulerian cradle for neutron texture measurements.
• To present the long-term performance and enhancements of the device.
• To introduce the POD2K software for pole figure plotting.

Main Methods:

• Development and implementation of an automated sample changer with an Eulerian cradle.
• Integration with the high pressure-preferred orientation diffractometer at the LANSCE neutron scattering facility.
• Software development for device control and data visualization (POD2K).

Main Results:

• The automated sample changer has successfully analyzed over 2300 texture and 400 powder samples since 2002.
• Nearly a decade of operation led to significant improvements in the device's mechanics, electronics, and software, enhancing reliability.
• The POD2K software enables the creation of publication-quality pole figure plots.

Conclusions:

• The automated sample changer is a reliable and resilient tool for neutron texture measurements.
• Sustained enhancements have optimized the performance of the neutron scattering facility.
• The POD2K software facilitates the dissemination of texture analysis results.