Fusion scientists have solved a strange mystery inside donut-shaped machines called tokamaks. The discovery could help make fusion reactors work more reliably.
For years, experiments showed that escaping plasma particles hit one side of the exhaust system much more than the other. But computer simulations could not explain why this happened.
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The mystery stumped researchers for a long time. Now, a team of physicists has found the hidden factor. Plasma rotation plays a crucial role in creating the imbalance.
When plasma spins inside the tokamak, it combines with a sideways particle drift. Together, these two forces push more particles toward one side of the exhaust. This finally explains what experiments had shown all along.
Fusion reactors aim to copy the energy of the sun. But handling the hot exhaust is a major challenge. Uneven particle flow can damage the walls and reduce efficiency. This solution helps engineers design better exhaust systems.
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The finding has been tested in simulations and existing experiments. It still needs to be confirmed across different tokamak designs. Larger reactors, such as ITER, may behave slightly differently.
Fusion energy promises clean, unlimited power. Solving small mysteries like this one removes roadblocks to the operation of working reactors. Each fix brings scientists closer to making fusion a real energy source.
