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US researchers have achieved a world first in an ambitious experiment that aims to recreate the conditions at the heart of the sun and pave the way for nuclear fusion reactors.
The scientists generated more energy from fusion reactions than they put into the nuclear fuel, in a small but crucial step along the road to harnessing fusion power. The ultimate goal – to produce more energy than the whole experiment consumes – remains a long way off, but the feat has nonetheless raised hopes that after decades of setbacks, firm progress is finally being made.
The dream of controlled fusion remains a distant hope, and Hurricane said it was too early to say whether it was even possible with the NIF facility. The researchers need to get a hundred times more energy from the fusion reactions before the process can run itself, and more for it to deliver an overall surplus of energy.