Portable laser-heating stand for synchrotron applications

Area of Science:

• High-pressure physics
• Materials science
• Synchrotron science

Background:

• Diamond anvil cells are crucial for extreme condition research.
• Laser heating is a key technique for reaching high temperatures in diamond anvil cells.
• Existing systems can be bulky and time-consuming to set up.

Purpose of the Study:

• To develop a compact and efficient laser-heating system for diamond-cell synchrotron applications.
• To enable remote, precise control of experimental parameters.
• To facilitate rapid setup and alignment at synchrotron beamlines.

Main Methods:

• A double-sided laser-heating system was designed with a small optical table (<0.5 m², <20 kg).
• Remote control of components was achieved using DC motors and pneumatic drives.
• The system was integrated with X-ray diffraction and absorption beamlines at the European Synchrotron Facility.

Main Results:

• The system allows for precise alignment of the laser-heated spot with X-ray beams and spectrometers.
• Experiments were conducted on various materials at pressures exceeding one megabar and temperatures above 4000 K.
• A new measurement of the melting temperature of iron was successfully obtained using X-ray absorption spectroscopy.

Conclusions:

• The developed laser-heating system is compact, efficient, and user-friendly for extreme condition research.
• It significantly reduces setup time and enhances precision in synchrotron-based material studies.
• The system facilitates novel high-pressure, high-temperature measurements, advancing materials science and geophysics.