By 1976, researchers had characterized actinocenes featuring thorium, uranium, neptunium, and plutonium, but the chemistry of heavier actinides remained largely unexplored. Related Stories ...

small amounts of transuranics (elements heavier than uranium, such as neptunium, plutonium and americium) and fission products such as technetium-99. As a result, the depleted uranium by-product from ...

By bombarding uranium-238 with deuterium nuclei (alpha particles) that had been accelerated in a cyclotron device, they were able to create neptunium-238 with a half-life of two days. The ...

The actinides include 14 metallic elements in the periodic system. They include thorium, uranium, neptunium, plutonium and americium. Atoms of these elements have have many electrons, up to more ...

Ohio state leaders are urging the U.S. Department of Energy to invest in Piketon, Ohio, for uranium enrichment. The investment could bolster domestic energy production and national security by ...