SMRTR TechJul 3, 2025Scientific American

Record-Breaking Results Bring Fusion Power Closer to Reality

Record-Breaking Results Bring Fusion Power Closer to Reality

SMRTR summary

A twisting ribbon of hydrogen gas, hotter than the sun's surface, has given scientists a tantalizing glimpse into the future of controlled nuclear fusion. Germany's Wendelstein 7-X reactor set a record by containing superheated plasma for 43 seconds, while the Joint European Torus in England claims even longer containment times of up to 60 seconds.

This friendly rivalry between stellarators and tokamaks highlights progress in magnetic confinement fusion, a promising approach that aims to ignite reactions using deuterium and tritium. Meanwhile, the National Ignition Facility near San Francisco achieved fusion ignition using powerful lasers in 2022.

Private companies are now joining the race, with some aiming to feed fusion power to the grid by the early 2030s. University of Cambridge nuclear engineer Tony Roulstone believes fusion power might be just 15 to 20 years away, citing advancements in superconducting magnets as a game-changer.

While challenges remain, these breakthroughs offer hope for a future of clean, abundant energy derived from seawater.

SMRTR provides this summary for quick context. The original article belongs to Scientific American.

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