Laser-heating system for high-pressure X-ray diffraction at the Extreme Conditions beamline I15 at Diamond Light...

Area of Science:

• Materials Science
• High-Pressure Physics
• Geophysics

Background:

• Advanced experimental techniques are crucial for understanding material behavior under extreme conditions.
• Characterizing materials at high pressures and temperatures informs fields from planetary science to materials engineering.

Purpose of the Study:

• To present the design and application of a novel double-sided YAG laser-heating system.
• To validate the system's reliability and stability for in situ and ex situ material characterization.
• To investigate the phase diagram of lead under extreme conditions.

Main Methods:

• Utilized a new double-sided YAG laser-heating system at Diamond Light Source beamline I15.
• Employed diamond anvil cell and X-ray diffraction techniques for material analysis.
• Conducted a case study on lead to determine its phase diagram up to 80 GPa and 3300 K.

Main Results:

• Successfully characterized material properties at extreme pressures and temperatures.
• The lead phase diagram was accurately mapped, showing good agreement with existing data.
• Demonstrated the reliability and stability of the experimental setup across a wide parameter range.

Conclusions:

• The new double-sided YAG laser-heating system is a reliable tool for high-pressure, high-temperature research.
• The system's performance is suitable for in situ and ex situ studies of material properties.
• This setup advances the capability for exploring extreme material states and phase transitions.