Researchers from the Princeton Plasma Physics Laboratory (PPPL) have found that sprinkling boron powder inside fusion reactors could protect tungsten walls from plasma heat, preventing tungsten atoms from contaminating the plasma and disrupting fusion reactions. Experiments in several tokamaks showed reduced tungsten sputtering with boron coating. A computer model also suggests that boron powder can be sprinkled from just one location to achieve uniform wall protection. This method could enhance wall integrity in reactors like ITER, supporting long-term fusion energy development.
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