U.S. scientists are set to announce a breakthrough on fusion energy on Tuesday, potentially a step toward one day harnessing the process that fires the sun to generate carbon-free electricity as the world struggles with climate change.
The U.S. Department of Energy said it will make the announcement at 10am Eastern Time . Sources said the advance was carried out byHere are some of the main issues surrounding fusion energy:Fusion occurs when two light atoms, such as hydrogen, heated to extreme temperatures of 100 million degrees Celsius fuse into one heavier atom, releasing large amounts of energy. It is different from fission, in which a reactor shoots a neutron into an atom of uranium, splitting into two smaller atoms.
Tony Roulstone, a nuclear energy expert at the University of Cambridge, said it the experiment seems to be a success because energy output released by the reaction was more than the energy delivered to the target from the laser. But the experiment's energy output was only 0.5% of the vast amount of energy needed to fire the laser.
As the quest for fusion energy develops over a decade or potentially much longer, countries should continue aggressive moves into wind and solar power, energy storage, including batteries, next generation fission power and other alternatives to reduce dependence on fossil fuels, scientists and environmentalists say.
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