South Korean scientists have made a breakthrough in the field of thermonuclear fusion

Scientists from South Korea announced the establishment of a new world record in the field of thermonuclear fusion. They managed to maintain a temperature of 100 million °C for a record time. This figure is 7 times higher than the temperature at the core of the Sun.

World record

The Tokamak Technology Reactor (KSTAR), which uses a strong magnetic field to confine plasma within the structure, was able to maintain a plasma temperature of 100 million °C for 48 seconds. This result significantly exceeds the 2021 record, which was 30 seconds.

Experts reported that they were able to increase the duration of the experiment by introducing a number of changes. In particular, they replaced carbon with tungsten in devices that remove heat, and also improved the control of impurities formed during the fusion reaction.

“Thorough equipment testing and preparation allowed us to achieve results exceeding previous KSTAR records in a short period of time.”

Senter Si-Woo Yoon, Director of KSTAR Research

What is nuclear fusion

Nuclear fusion is a process in which two light atomic nuclei combine and release enormous amounts of energy. It occurs at extremely high temperatures and pressures comparable to those present in the cores of stars.

Significance of KSTAR Achievements

Achieving sustainable fusion reactions in laboratory conditions opens up the potential for unlimited, zero-carbon electricity generation.

By increasing the duration of high-temperature fusion, scientists aim to maintain plasma temperatures of 100°C for 300 seconds by 2026. This goal will be achieved through improvements to the device and the use of error field optimization models that will improve stability at both the center and edges of the plasma.

“This study provides the green light to acquire the core technologies needed for a demonstration fusion reactor.”

Sook Jae Yoo, President of KFE

Progress in nuclear fusion research at KSTAR contributes to international efforts, supporting projects such as ITER in France.