<\/p>
The long-standing dream of using nuclear fusion to create a safe, efficient supply of energy has come closer to reality. Scientists at the Joint European Torus (JET) near Oxford, UK, have used their reactor to generate the largest-ever amount of energy in a sustained fusion reaction.<\/p>\n
In an experiment carried out in December 2021, the team used JET to produce a total of 59 megajoules of heat energy over a five-second period. The previous record of 22 megajoules was set by JET in 1997.<\/p>\n
\u201cThe record, and more importantly the things we\u2019ve learned about fusion under these conditions and how it fully confirms our predictions, show that we are on the right path to a future world of fusion energy,\u201d said Prof Tony Donn\u00e9<\/a>, EUROfusion programme manager. \u201cIf we can maintain fusion for five seconds, we can do it for five minutes and then five hours as we scale up our operations in future machines.\u201d<\/p>\n Read more about nuclear fusion reactors:<\/strong><\/p>\n Fusion is the process that is ongoing inside stars such as the Sun. It smashes together lighter atoms such as hydrogen at incredibly high temperatures to form heavier elements and release huge amounts of energy as heat.<\/p>\n The success of the experiment now sets the scene for the International Thermonuclear Experimental Reactor, or ITER, a larger, more advanced version of JET, the researchers say.<\/p>\n ITER is a global fusion project based in Saint-Paul-l\u00e8s-Durance, southern France that involves scientists from China, the European Union, India, Japan, South Korea, Russia and the USA. Although it is much larger than JET, ITER plans to use the same deuterium-tritium fuel source and operate under similar conditions when it goes online in 2025.<\/p>\n \u201cThis is a big moment for every one of us and the entire fusion community. Crucially, the operational experience we\u2019ve gained under realistic conditions gives us great confidence for the next stage of experiments at ITER,\u201d said Donn\u00e9.<\/p>\n It is hoped that nuclear fusion will play an important role in addressing the effects of climate change thanks to the low amounts of carbon it generates, the researchers say.<\/p>\n