Scientists have achieved record breaking temperatures within an ‘artificial sun’ reactor, marking a major advance in the development of nuclear fusion energy.

The new world record saw a ball of plasma sustain a temperature of 100 million degree celsius – seven times hotter than the core of the Sun and nearly 20,000 times hotter than the surface of the Sun – for 48 seconds.

Researchers at the Korea Institute of Fusion Energy (KFE) in Daejeon, South Korea, were also able to keep the plasma stable for over 100 seconds, which is a critical element of harnessing nuclear fusion as a source of energy.

Often referred to as the ‘holy grail’ of clean energy, nuclear fusion offers the potential to provide near limitless energy by replicating the natural processes that occur within stars. It requires no finite raw materials like fossil fuels to operate, and produces no toxic waste like the nuclear fission process that powers commercial nuclear power plants.

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The KFE team said the key to the breakthrough was using tungsten as one of the components, which is able to handle significantly greater heat loads. They now hope to build on the latest success by achieving the team’s ultimate goal of sustaining plasma at 100 million degrees for 300 seconds in order to build the world’s first fusion demonstration reactor.

Continue here: Independent