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'Heaviest element' claim thrown into doubt

作者:仲戮    发布时间:2019-03-14 11:13:02    

COULD a superheavy element, more massive than any created in the lab, really have gone unnoticed in Earth’s rocks until now? That was the claim of a team of physicists last week, but the announcement has prompted only scepticism. Amnon Marinov at the Hebrew University of Jerusalem in Israel led a team that ran a purified solution of naturally occurring thorium through a mass spectrometer to measure the mass of individual atoms. Thorium has an atomic mass close to 232, but the team saw a handful of atoms with a much greater mass,

 

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