Researchers zapped water with powerful lasers and managed to 'flash-freeze' it into an exotic superionic state
“We designed the experiments to compress the water so that it would freeze into solid ice, but it was not certain that the ice crystals would actually form and grow in the few billionths of a second that we can hold the pressure-temperature conditions,” said LLNL physicist and co-lead author Marius Millot.
“Water is known to have many different crystalline structures known as ice Ih , II, III, up to XVII,” Federica Coppari, co-lead from LLNL explained. “So, we propose to call the new... solid form ‘ice XVIII.’" “Because water ice at Uranus’ and Neptune’s interior conditions has a crystalline lattice, we argue that superionic ice should not flow like a liquid such as the fluid iron outer core of the Earth,” Millot said. “This can dramatically affect our understanding of the internal structure and the evolution of the icy giant planets, as well as all their numerous extrasolar cousins.”
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