Pairing special uranium-239 and thorium-229 has revealed a potential wavelength for nuclear clocks. A nuclear clock improves over the unfathomably precise atomic clock by many orders of magnitude ...

Some of the uranium nuclei would undergo fission, newly understood phenomenon, and split violently into two pieces. In other cases, however, a uranium-238 nucleus (atomic number 92) would quietly ...

That decays via beta radiation to neptunium-239 (239 Np), another short half-life (52 hours) isotope that decays to 239 Pu: Uranium decay series. Adding a neutron to uranium-238 in a reactor ...

IN their classic paper1 discussing the theory of the fission process, Bohr and Wheeler estimated the energy release to be expected in binary, ternary and quaternary fission of the compound nucleus ...

Even the process is similar: Expose abundant uranium-238 to neutrons, and it will absorb one, eventually causing it to decay to plutonium-239, another fissile substance that’s been used to ...

Khin Maung Maung, a professor of physics and astronomy at the University of Southern Mississippi, told VOA that plutonium, the material mentioned in Ebisawa's case, is derived from uranium-239 in ...

Whether weapons or energy, it all starts with the element uranium (U). ... Pu-239 is also a fissile element, even more so than U-235, and can split to produce additional energy.

Current nuclear reactors are powered by a mix of two isotopes of uranium that produce a third isotope--uranium 239, which ultimately decays into bomb-grade plutonium. U.S. World; ...

Uranium-fueled reactors consume uranium-235 and produce plutonium-239. A three-phase plan was probably first proposed by Eugene Wigner at the University of Chicago in the fall of 1944.