00:00Scientists have detected a strange signal from a nuclear reactor, even after it shut down.
00:06The discovery was made at the CHOOSE nuclear plant in northern France.
00:09Researchers were searching for tiny particles called antineutrinose.
00:14These particles are produced as radioactive material continues to decay,
00:18and they can pass through reactor structures almost completely undisturbed.
00:23The DoubleCHOOSE team studied the site for 17.2 days.
00:26Both reactor units were fully shut down during the observations.
00:31Yet the detector recorded roughly 100 candidate antineutrino events.
00:35The detector sits about 400 meters from the reactor cores.
00:39Scientists say the signal closely matched their predictions.
00:42That confirms radioactive fuel can still produce measurable antineutrinos after shutdown.
00:48The finding could have important applications.
00:51Future detectors may help monitor reactors during maintenance and after shutdown.
00:55They could also provide independent information about spent nuclear fuel.
01:00Scientists say this faint signal opens a new way to study what happens inside reactors after they go dark.
01:07Disclosure. This video contains stock footage and content created or enhanced using AI-assisted tools.
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