In nuclear physics, a decay product (also known as a daughter product, daughter isotope, radio-daughter, or daughter nuclide) is the remaining nuclide...

isotopes that compose a given decay chain once that decay chain has proceeded long enough for some of its daughter products to have reached the stable (i...

decay or α-decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle (helium nucleus) and thereby transforms or "decays"...

within the material to the abundance of its decay products, which form at a known constant rate of decay. The use of radiometric dating was first published...

In nuclear physics, beta decay (β-decay) is a type of radioactive decay in which an atomic nucleus emits a beta particle (fast energetic electron or positron)...

(Fission products do not decay via alpha decay.) A few neutron-rich and short-lived initial fission products decay by ordinary beta decay (this is the...

intermediate product in the decay chain of uranium-238; as such, it can be found naturally in uranium-containing minerals. 226 Ra occurs in the decay chain of...

Positron emission, beta plus decay, or β+ decay is a subtype of radioactive decay called beta decay, in which a proton inside a radionuclide nucleus is...

Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable...

A quantity is subject to exponential decay if it decreases at a rate proportional to its current value. Symbolically, this process can be expressed by...

between the muon and the set of its decay products is small, providing few kinetic degrees of freedom for decay. Muon decay almost always produces at least...

soil and rock where it is generated. Radon isotopes are the immediate decay products of radium isotopes. The instability of 222Rn, its most stable isotope...

of each decay product, except the end product lead, is proportional to its half-life. While 238U is minimally radioactive, its decay products, thorium-234...

a few percent.) The ratio is less than 190 when the decay products of each are included. The decay chain of uranium-238 to uranium-234 and eventually lead-206...

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

undergoes alpha decay to francium-221 with a half-life of 10 days, and is an intermediate decay product in the neptunium series (the decay chain starting...

"shadowed" from beta decay and can only occur as direct fission products, not as beta decay products of more neutron-rich initial fission products. The shadowed...

warhead is continually undergoing radioactive decay, becoming unavailable for fusion. Also, its decay product, helium-3, absorbs neutrons. This can offset...

penetrating form of electromagnetic radiation arising from the radioactive decay of atomic nuclei. It consists of the shortest wavelength electromagnetic...

The decay energy is the energy change of a nucleus having undergone a radioactive decay. Radioactive decay is the process in which an unstable atomic nucleus...

the third product. This is the main source of tritium from light water reactors. Another source of tritium is Helium-6 which immediately decays to (stable)...

carcinogenic due to the radioactivity of both it and its immediate decay product radon as well as its tendency to accumulate in the bones. Radium, in...

are highly radioactive and produce further energy by their radioactive decay. Some of them produce neutrons, called delayed neutrons, which contribute...

half-lives and are found in appreciable quantity in Earth's crust. The decay product uranium-234 is also found. Other isotopes such as uranium-233 have been...

approximately 3.8 days. It is transient in the decay chain of primordial uranium-238 and is the immediate decay product of radium-226. Radon-222 was first observed...

In natural uranium and in uranium ore, 234U occurs as an indirect decay product of uranium-238, but it makes up only 0.0055% (55 parts per million,...

because it represents a decay chain of beta decay. Isotope and element yields will change as the fission products undergo beta decay, while chain yields do...

nuclides are radioactive and are called radionuclides. Their decay products ('daughter' products) are called radiogenic nuclides. Natural radionuclides may...

emitted. An essential property of this and all nuclide decays is that the total energy of the decay product is less than that of the original nuclide. The difference...

Intermediate decay product of 237Np Intermediate decay product of 238U Intermediate decay product of 235U Intermediate decay product of 232Th 206Pb...