Home / Health / Dark-Matter Detector Measures Half-Life of Xenon-124 that’s Longer than Universe’s Age

Dark-Matter Detector Measures Half-Life of Xenon-124 that’s Longer than Universe’s Age



The half-life of a process is the time after which half of the radioactive nuclei present in a sample have decayed away. Using the XENON1T dark-matter detector, a 1,300-kg vat of super-pure liquid xenon shielded from cosmic rays in a cryostat submerged in water deep 1.5 km beneath the Gran Sasso mountains of Italy, physicists […]



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