Through recent high-resolution computer simulations, Jardin and colleagues showed what can cause the temperature to stay flat or even decrease in the center of the plasma that fuels fusion reactions, even as more heating power is beamed in. Fusion combines light elements in the form of plasma to release massive amounts of energy. Solving the mystery could contribute to efforts around the world to create and control fusion on Earth to produce a virtually inexhaustible source of safe, clean and carbon-free energy to generate electricity while fighting climate change. "So this was a big mystery: Why does this happen?" "Normally, the more beam power you put in, the higher the temperature gets," said Stephen Jardin, head of the theory and computational science group that performed the calculations, and lead author of a proposed explanation published in Physical Review Letters.
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