A new world record was set by the Korean artificial Sun. It is reported that within 20 seconds of operation, its temperature background was 100 million degrees. Advanced Research's superconducting tokamak, built in Korea, is recognized as a super-powerful thermonuclear device. Its second conventional name is artificial Sun. The scientists broke a new world record set by this device.
It managed to maintain high-temperature plasma for 20 seconds, while the temperature was stably kept at around 100 million degrees. This figure is one of the conditions for nuclear fusion in the current year. It is recognized as an achievement as the previous challenge was to double the plasma cutting period from 8 seconds.
In an experiment conducted in 2018, the plasma temperature reached 100 million degrees for the first time. Then it was able to hold out for one and a half seconds. To create artificial thermonuclear reactions, exactly the same as those occurring on the Sun. Isotopes of hydrogen are placed inside a special thermonuclear device, they create a state of plasma. In it, ions and electrons are separated, while the task of the ions is to heat and stay stable at very high temperatures.
The scientists used various thermonuclear devices and they managed to achieve an increase in temperature up to 100 million degrees. But in no case did the barrier of the temporary maintenance period exceed 10 seconds.
The device worked at its limit and it was extremely difficult to maintain plasma stability at such high temperatures for a long time. In this year experiment, the scientists demonstrated how artificial Sun could improve the performance of an internal transport barrier.
It is one of the main modes of operation of the next generation plasma. The method was developed last year and it allowed maintaining a longer time period than before, while maintaining a high temperature regime.
According to the head of the KSTAR research center Xi Wu Yun, the technologies required for long-term operations at temperatures of 100 million degrees are key in the project for the implementation of thermonuclear energy. They will allow the artificial Sun to maintain a stable temperature for twenty years in the near future.