Rival China's 'artificial sun' fusion reactor ran longer. Nuclear fusion reactors mimic energy-producing process of stars like our sunIf we want to rely on nuclear fusion to power the world's homes, the first step is making reactors that can run as hot and as long as possible.The massive doughnut-shaped device, which has been dubbed 'Korea's artificial sun' ran at 100 million°C for 48 seconds.
When deuterium and tritium nuclei - which can be found in hydrogen - fuse, they form a helium nucleus, a neutron and a lot of energy.Strong magnetic fields are used to keep the plasma away from the walls so that it doesn't cool down and lose energy potential. KSTAR already set a record back in 2021 of 100 million degrees for 30 seconds, but it has now beat this record.
'Thorough hardware testing and campaign preparation enabled us to achieve results surpassing those of previous KSTAR records in a short period,' said Dr Si-Woo Yoon, director of the KSTAR Research Center. In the tokamak, the plasma is trapped and pressurised by magnetic fields until the energised plasma particles start to collide.
Inside a tokamak, the energy produced through the fusion of atoms is absorbed as heat in the walls of the vessel Pictured, the KSTAR Vacuum vessel Like many other reactors around the world, KSTAR was built as a research facility to demonstrate the promising potential of nuclear fusion to produce power.
And the Joint European Torus , also located in Oxfordshire, released a total of 69 megajoules of energy over five seconds before being recently decommissioned. HOW A FUSION REACTOR WORKSFusion is the process by which a gas is heated up and separated into its constituent ions and electrons.
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