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Early transuranium elements. After the discovery of the neutron by Chadwick in 1932, the group led by Fermi in Rome. began bombarding different elements with neutrons to study the radioactivity induced through. (n,() reactions. The decay characteristics of the radioactivity in neutron-irradiated uranium was. interpreted to indicate that some of the products were probably transuranium elements. Similar. conclusions were reached by other research groups; for example in 1937 Meitner, Hahn and.
Californium was first prepared in a particle accelerator, or an atom smasher.. A particle accelerator accelerates subatomic particles or atoms to very high speeds. The particles collide with a target, such as gold, copper, or tin.The target atoms are converted into new elements by the interaction.verview. Californium is a transuranium element, or beyond uranium on the periodic table. The periodic table is a chart that shows how chemical elements are related to each other. Uranium is element number 92 in the periodic table, so elements with atomic numbers greater than 92 are said to be transuranium elements.