American physicists at U.C. Berkeley were soon to discover they could force uranium-238 to decay into plutonium-239; the substance has since been used in weapons and power plants around the world.

There are three natural isotopes of uranium — uranium-234 (U-234), uranium-235 (U-235) and uranium-238 (U-238). U-238 is the most common ... it has less U-235 per unit of mass. All traces of decay ...

Knowing the energies of the neutrinos, the researchers calculated that the radioactive decay of uranium-238 and thorium-232 contributes about 20 trillion watts to the amount of heat the planet ...

its rate of decay is so low that this element is actually not one of the more radioactive ones out there. Uranium-238 has a half-life of an incredible 4.5 billion years. Uranium-235 has a half ...

As a result of this model, scientists believe that about 20 TW is generated by radioactive decay – 8 TW from the uranium-238 decay chain; 8 TW from the thorium-232 decay chain and the final 4 TW from ...

The activity concentration arising solely from the decay of the uranium isotopes (U-234, U-235 and U-238) found in natural uranium is 25.4 Bq per mg. In nature, uranium isotopes are typically found in ...

This revealed that the gamma rays had energies characteristic of two radioactive isotopes, lead-214 and bismuth-214-both decay products of uranium-238. “That is the thrill of science-seeing ...

It has only 122 neutrons compared with the 146 neutrons found in more than 99 per cent of the world’s naturally occurring uranium, which is known as uranium-238. Isotopes of an element always ...