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Department of Chemistry Choong-Shik Yoo Group

Laser Heatingusing a fiber-coupled CW diode laser, we can achieve temperatures of several thousand Kelvin. This temperature range is necessary to bridge the regimes of static and dynamic experiments. These systems incorporate optical pyrometer for measuring the temperature of the heated samples. This technique is capable to achieve the pressure-temperature conditions of the Earth and planetary interiors (~5000 K at ~200 GPa).
Ohmic Heatingusing both an external wrapping heater to obtain ~500 C and an internal microheater to achieve ~1000 C, at high pressures of 100 GPa. The latter is typically performed in a vacuum chamber to prevent diamond anvils from graphitization. For higher temperatures, we use the laser heating technique.