Antineutrino detectors could spot signs that a fusion reactor is producing weapons-grade plutonium

According to Physics World, antineutrino detectors could provide a new way to spot signs that fusion reactors are producing weapons-grade plutonium. The technique is non-intrusive, meaning it can work from offsite and enable constant monitoring without requiring inspectors to physically access the facility. Antineutrinos are elusive subatomic particles produced in nuclear reactions—they slip through matter almost undetected. By measuring their signatures, researchers say this approach could offer a way to verify reactor operations and ensure compliance with nuclear safeguards, all without the need for invasive inspections.

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