nuclide


Also found in: Dictionary, Medical, Wikipedia.

Nuclide

A species of atom that is characterized by the constitution of its nucleus, in particular by its atomic number Z and its neutron number A - Z, where A is the mass number. The total number of stable nuclides is approximately 275. About a dozen radioactive nuclides are found in nature, and hundreds of others have been created artificially.

nuclide

(new -klÿd) A type of atom characterized by its atomic number and neutron number. The term ‘isotope’ is used for members of a series of atoms that have the same atomic number. ‘Nuclide’ is used for a particular species, e.g. the uranium–235 nuclide.

nuclide

[′nü‚klīd]
(nuclear physics)
A species of atom characterized by the number of protons, number of neutrons, and energy content in the nucleus, or alternatively by the atomic number, mass number, and atomic mass; to be regarded as a distinct nuclide, the atom must be capable of existing for a measurable lifetime, generally greater than 10-10 second. Also known as nuclear species; species.
References in periodicals archive ?
However, when the total amount of [sup.134]Cs and [sup.137]Cs was calculated, the amount of both nuclides inside the tree was roughly the same as that of the surface skin, because the total mass of the inner tree was much higher than that of the skin surface (Fig.
Neutron moderation in an absorbing neutrons moderating medium containing several varieties of nuclides. In this case, the law of neutron scattering is also given by (13).
Certified reference materials used as calibration standard sources with Marinelli beaker and cylindrical container geometries Certified reference material Nuclide Concentration Origin IAEA/RGU-1 (1) [.sup.238]U 400 [micro]g-1 Beverlodge, Saskatchewan, Canada IAEA/RGTh-1 (2) [.sup.232]Th 800 [micro]g g-1 Oka, Quebec, Canada IAEA-375 (3) [.sup.l37]Cs 5280 Bq kg-1 Bryansk area, Russia [.sup.226]Ra 20 Bq kg-1 [.sup.232]Th 20.5 Bq kg-1 [.sup.40]K 424 Bq kg-1 Merck (4) [.sup.40]K 1605 Bq kg-1 (1) International Atomic Energy Agency-certified Uranium Standard (2) International Atomic Energy Agency-certified Thorium Standard (3) International Atomic Energy Agency-certified Cesium-137 Standard (4) Merck Potassium Standard Table 2.
According to former researches [30, 31], the difficulty of discovering nuclide transport mechanism lies in solving the partial differential transport equation.
1 for placement of these nuclides in the decay chains.
Other unusual nuclides can have even longer half-lives than tantalum-180m.
The electrons contribute very little to the isotope mass, therefore the electron resonances are not decisive and we express the nuclide masses only as proton resonances, according to the equations
The uncertainties and fluctuations in the detected energy corresponding to a particular recoil energy are expressed in a (target nuclide and detector dependent) resolution function [G.sub.T]([E.sub.R], E') that gives the probability that a recoil energy [E.sub.R] (usually quoted in keVnr for nuclear recoils) is measured as E'.
Uranium mining and processing plants and heat-power engineering facilities add to a list of environmentally hazardous enterprises providing for such negative consequences of their operation as the inevitable pollution of the environment with anionic and cationic radioactive nuclides ([U.sub.natural], [sup.226]Ra, [sup.230]Th, [sup.210]Pb, and [sup.210]Po) and toxic heavy metals (HM).
In this minimally invasive scintigraphy, patients only need to lie down for about 20 minutes following nuclide injection.
Many radiopharmaceuticals use technetium-99m (Tc-99m) that has many useful properties of gamma-emitting tracer nuclide.