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South Korea’s Artificial Sun Breaks New World Records Page all

KOMPAS.com- Artificial sun South Korea reportedly set a new world record, for successfully maintaining a high temperature plasma for 20 seconds with an ion temperature of over 100 million degrees Celsius.

Previous, artificial sun China was already on. This time, the artificial sun was out of use nuclear energy developed by South Korea managed to burn longer and set new world records.

The superconducting or artificial solar fusion device was developed by Korea Superconducting Tokamak Advanced Research (KSTAR), a joint study by Seoul National University (SNU) and Columbia University, United States of America.

By maintaining continuous operation of the plasma for 20 seconds, researchers have reached the core requirement for nuclear fusion in the 2020 KSTAR Plasma Campaign.

Also read: Get to know the Chinese-made sun that finally lights up, what does it do?

Reporting from Phys, Monday (28/12/2020), in an experiment conducted in 2018, KSTAR was able to reach a plasma ion temperature of 100 million degrees Celsius for the first time, with a retention time of about 1.5 seconds.

To re-create the fusion reactions that occur in the sun on Earth, the hydrogen isotope must be housed in a nuclear fusion device such as KSTAR.

This is done to create a plasma state, where the ions and electrons are separated, then the ions are heated and maintained at a high temperature.

So far, however, there are other fusion devices that can briefly adjust plasma to temperatures of 100 million degrees Celsius or higher.

photo" data-photolink="http://www.kompas.com/sains/image/2020/12/28/190100123/matahari-buatan-korea-selatan-pecahkan-rekor-dunia-baru?page=2" style=" max-width: 100% ; width:750px ">Shutterstock An illustration of an equinox, an event in which the declination of the Sun is equal to the equator or equator.-

However, none of them were able to break the barrier to be able to sustain plasma surgery for more than 10 seconds.

Meanwhile, a duration of 10 seconds or more is the operational limit of a normal conducting device and it is difficult to maintain a stable plasma state in a fusion device at high temperatures for any length of time.

KSTAR tries to improve the performance of the Internal Transport Barrier (ITB) mode which was carried out in the 2020 trial.

ITB is one of the next generation plasma operating modes developed last year.

Also read: Artificial Sun Made in China Will Finish This Year

This mode is successful in maintaining plasma status in the artificial sun for an extended period of time, overcoming the limitations that exist in high temperature plasma surgery.

Director Si-Woo Yoon of the KSTAR Research Center said the technology required for the long-term operation of 100 million plasma is the key to the realization of fusion energy.

“And KSTAR’s success in maintaining high-temperature plasma for 20 seconds will be an important turning point in the experimental operation of high-performance plasma, a critical component of future commercial nuclear fusion reactors,” he explained.

Yong-Su Na, a professor at SNU’s Nuclear Engineering Department who also conducted joint research, said the success of the KSTAR experiment has brought us one step closer to developing technology for the realization of solar nuclear fusion energy.

“The 100 million degree ion temperature achieved by allowing the core plasma to efficiently heat up for such a long duration demonstrates the unique capabilities of the superconducting KSTAR device, and will be recognized as a solid basis for stable and high-performance fusion-state plasmas,” said Dr. Young-Seok Park of Columbia University.

The artificial solar device developed by South Korea entered service last August.

Also read: What is the core of the sun like? Science Answering

KSTAR also plans to continue plasma generator trials until December 10, by conducting a total of 110 plasma experiments.

These include high-performance plasma surgery and plasma interference mitigation trials, which are joint research trials with researchers from home and abroad.

The ultimate goal of KSTAR’s artificial sun is to hopefully be able to successfully conduct continuous plasma operations for 300 seconds with ion temperatures higher than 100 million degrees Celsius by 2025.

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