Two New Elements Made: Atom smashups yield 113 and 115 | Science News

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Two New Elements Made: Atom smashups yield 113 and 115

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11:32am, February 4, 2004

Last summer, when more than 8 million trillion calcium ions blasted a thin film of americium atoms nonstop for more than a month, the collisions generated four atoms of never-before-seen element 115, a Russian-U.S. team now reports.

Each of those putative atoms of element 115 disintegrated within fractions of a second by spontaneously ejecting an alpha particle, which contains two protons and two neutrons. Therefore, the experiment appears to have also produced the first four atoms of element 113 ever recognized.

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