Uranium–thorium dating, also called thorium-230 dating, uranium-series disequilibrium dating or uranium-series dating, is a radiometric dating technique...

decay, starting a decay chain named the thorium series that ends at stable 208Pb. On Earth, thorium and uranium are the only elements with no stable or...

Other thorium isotopes occur in nature in much smaller quantities as intermediate products in the decay chains of uranium-238, uranium-235, and thorium-232...

element thorium. A thorium fuel cycle can offer several potential advantages over a uranium fuel cycle—including the much greater abundance of thorium found...

Used in uranium–thorium dating Used in uranium–uranium dating Intermediate decay product of 238U Primordial radionuclide Used in Uranium–lead dating Important...

The method is usually applied to zircon. This mineral incorporates uranium and thorium atoms into its crystal structure, but strongly rejects lead when...

For example element 92, uranium, has an isotope with 144 neutrons (236U) and it decays into an isotope of element 90, thorium, with 142 neutrons (232Th)...

Uranium-238 (238 U or U-238) is the most common isotope of uranium found in nature, with a relative abundance of 99%. Unlike uranium-235, it is non-fissile...

stable isotope 206Pb. Other dating techniques using this decay series include uranium–thorium dating and uranium–lead dating. 238U, with a half-life of...

other types of radiometric dating, including uranium–thorium dating, uranium–lead dating and uranium–uranium dating. Uranium metal is used for X-ray targets...

will occur. Uranium-234 as well as uranium-232 are common byproducts in reactors breeding thorium-232 into uranium-233. Uranium–uranium dating "Management...

are defined by the use of fluoride fuel salts and the breeding of thorium into uranium-233 in the thermal neutron spectrum. The LFTR concept was first investigated...

concentrations of various uranium, thorium, and protactinium isotopes in water and minerals is used in radiometric dating of sediments up to 175,000...

more-commonly available isotopes of uranium and thorium, such as uranium-238 and thorium-232, as opposed to the rare uranium-235 which is used in conventional...

the country's long term energy independence, through the use of uranium and thorium reserves found in the monazite sands of coastal regions of South...

do, only thorium and uranium do so in more than trace quantities. The most abundant or easily synthesized actinides are uranium and thorium, followed...

fault movement. A relatively short-range dating technique is based on the decay of uranium-234 into thorium-230, a substance with a half-life of about...

the field of thorium-based fuels, working to design and develop a prototype for an atomic reactor using thorium and low-enriched uranium, a key part of...

radioactive thorium-230. (230Th was once known as ionium, before it was realised it was the same element as 232Th.) Uranium (in nature, predominantly uranium-238)...

live much longer, decaying by gamma emission. See § Thorium-229m. Used in Uranium–thorium dating Intermediate decay product of 238U Primordial radionuclide...

Uranium-235 (235 U or U-235) is an isotope of uranium making up about 0.72% of natural uranium. Unlike the predominant isotope uranium-238, it is fissile...

in particular the common uranium isotope U-238 and thorium, respectively, and can be separated from spent uranium and thorium fuels in reprocessing plants...

Samarium–neodymium dating Tephrochronology Uranium–lead dating Uranium–thorium dating Uranium–uranium dating, useful in dating samples between about 10,000 and...

temperature. They can accept a variety of fuels (low-enriched uranium, thorium, depleted uranium, waste products) and coolants (fluoride, chloride, lithium...

of uranium but a large resource of thorium. The beach sands of Kerala and Orissa have rich reserves of monazite, which contains about 8–10% thorium. Studies...

highly enriched in uranium, thorium and potassium, and may in turn create internal pegmatites or hydrothermal systems into which uranium may dissolve. The...

Mining commenced in 1957, when approximately 18,000 tonnes of thorium-bearing uranium ore grading 1% U3O8 was recovered from an open pit. Additional...

present in rocks as a result of decay from uranium and thorium. (See lead–lead dating and uranium–lead dating.) The longest-lived radioisotopes are 205Pb...

thorium, protactinium and uranium. He also discovered the phenomena of atomic recoil and nuclear isomerism, and pioneered rubidium–strontium dating....

reactor. The thorium-233 beta decays to protactinium-233 and then to uranium-233, which in turn is used as fuel. Hence, like uranium-238, thorium-232 is a...