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Two New Superheavy Elements Discovered

Date:
June 8, 1999
Source:
Lawrence Berkeley National Laboratory
Summary:
Discovery of two new "superheavy" elements has been announced by scientists at the U.S. Department of Energy's Lawrence Berkeley National Laboratory. Element 118 and its immediate decay product, element 116, were discovered at Berkeley Lab's 88-Inch Cyclotron by bombarding targets of lead with an intense beam of high-energy krypton ions. Although both new elements almost instantly decay into other elements, the sequence of decay events is consistent with theories that have long predicted an "island of stability" for nuclei with approximately 114 protons and 184 neutrons.

BERKELEY, CA -- Discovery of two new "superheavy" elements has been announced by scientists at the U.S. Department of Energy's Lawrence Berkeley National Laboratory. Element 118 and its immediate decay product, element 116, were discovered at Berkeley Lab's 88-Inch Cyclotron by bombarding targets of lead with an intense beam of high-energy krypton ions. Although both new elements almost instantly decay into other elements, the sequence of decay events is consistent with theories that have long predicted an "island of stability" for nuclei with approximately 114 protons and 184 neutrons.


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The above story is based on materials provided by Lawrence Berkeley National Laboratory. Note: Materials may be edited for content and length.


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Lawrence Berkeley National Laboratory. "Two New Superheavy Elements Discovered." ScienceDaily. ScienceDaily, 8 June 1999. <www.sciencedaily.com/releases/1999/06/990608071804.htm>.
Lawrence Berkeley National Laboratory. (1999, June 8). Two New Superheavy Elements Discovered. ScienceDaily. Retrieved April 18, 2014 from www.sciencedaily.com/releases/1999/06/990608071804.htm
Lawrence Berkeley National Laboratory. "Two New Superheavy Elements Discovered." ScienceDaily. www.sciencedaily.com/releases/1999/06/990608071804.htm (accessed April 18, 2014).

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