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2020-06-09 21:41:14
https://phys.org/news/2018-10-solidification-high-pressure-ice-ocean-world.html
A team of theorists from Lawrence Livermore National Laboratory (LLNL) has solved a long-standing puzzle in the nucleation of a high-pressure phase of ice known as ice VII, which is believed to exist near the core of "ocean world" planets recently detected outside of the solar system, and has recently been discovered to exist within the Earth's mantle. The findings are described in a paper published today by Physical Review Letters.
Water has been found to freeze into ice VII in laboratory experiments that use shock or ramp waves to compress liquid water to pressures exceeding 100,000 times that found at ambient conditions.
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