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New computer model helps brings the sun into the laboratory


Credit: Composite image by Elle Starkman / Solar image by NASA Goddard Media Studios
Every day, the sun ejects large amounts of a hot particle soup known as plasma toward Earth where it can disrupt telecommunications satellites and damage electrical grids. Now, scientists at the U.S. Department of Energy s (DOE) Princeton Plasma Physics Laboratory (PPPL) and Princeton University s Department of Astrophysical Sciences have made a discovery that could lead to better predictions of this space weather and help safeguard sensitive infrastructure.
The discovery comes from a new computer model that predicts the behavior of the plasma in the region above the surface of the sun known as the solar corona. The model was originally inspired by a similar model that describes the behavior of the plasma that fuels fusion reactions in doughnut-shaped fusion facilities known as tokamaks. ....

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Fooling fusion fuel: How to discipline unruly plasma


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IMAGE: Physicist Jong-Kyu Park in KSTAR control room, left, and with figures from paper, right.
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Credit: Control room photo courtesy of KSTAR; collage and right-hand photo by Elle Starkman/PPPL Office of Communications.
The process designed to harvest on Earth the fusion energy that powers the sun and stars can sometimes be tricked. Researchers at the U.S. Department of Energy s (DOE) Princeton Plasma Physics laboratory have derived and demonstrated a bit of slight-of-hand called quasi-symmetry that could accelerate the development of fusion energy as a safe, clean and virtually limitless source of power for generating electricity. ....

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