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53 relations: Aluminium-26, Background radiation, Beryllium-10, Carbon-14, Cosmic ray, Cosmic ray spallation, Cosmogenic nuclide, Decay chain, Half-life, Iodine-129, Isotope, Isotopes of barium, Isotopes of caesium, Isotopes of curium, Isotopes of dysprosium, Isotopes of gadolinium, Isotopes of hafnium, Isotopes of iron, Isotopes of lead, Isotopes of magnesium, Isotopes of manganese, Isotopes of molybdenum, Isotopes of neodymium, Isotopes of nickel, Isotopes of niobium, Isotopes of palladium, Isotopes of ruthenium, Isotopes of samarium, Isotopes of silver, Isotopes of technetium, Isotopes of tellurium, Isotopes of thallium, Isotopes of thorium, Isotopes of tungsten, Isotopes of xenon, Isotopes of zirconium, List of nuclides, Myr, Natural abundance, Nuclear fission product, Nucleosynthesis, Plutonium-244, Presolar grains, Primordial nuclide, Radioactive decay, Radiometric dating, Radionuclide, Spontaneous fission, Thorium, Uranium, ..., Uranium-235, Uranium-236, Xenon. Expand index (3 more) »
Aluminium-26
Aluminium-26, 26Al, is a radioactive isotope of the chemical element aluminium, decaying by either of the modes beta-plus or electron capture, both resulting in the stable nuclide magnesium-26.
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Background radiation
Background radiation is a measure of the ionizing radiation present in the environment at a particular location which is not due to deliberate introduction of radiation sources.
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Beryllium-10
Beryllium-10 (10Be) is a radioactive isotope of beryllium.
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Carbon-14
Carbon-14, 14C, or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.
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Cosmic ray
Cosmic rays are high-energy radiation, mainly originating outside the Solar System and even from distant galaxies.
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Cosmic ray spallation
Cosmic ray spallation is a naturally occurring nuclear reaction causing nucleosynthesis.
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Cosmogenic nuclide
Cosmogenic nuclides (or cosmogenic isotopes) are rare nuclides (isotopes) created when a high-energy cosmic ray interacts with the nucleus of an in situ Solar System atom, causing nucleons (protons and neutrons) to be expelled from the atom (see cosmic ray spallation).
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Decay chain
In nuclear science, the decay chain refers to a series of radioactive decays of different radioactive decay products as a sequential series of transformations.
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Half-life
Half-life (symbol t1⁄2) is the time required for a quantity to reduce to half its initial value.
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Iodine-129
Iodine-129 (129I) is a long-lived radioisotope of iodine which occurs naturally, but also is of special interest in the monitoring and effects of man-made nuclear fission decay products, where it serves as both tracer and potential radiological contaminant.
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Isotope
Isotopes are variants of a particular chemical element which differ in neutron number.
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Isotopes of barium
Naturally occurring barium (56Ba) is a mix of six stable isotopes and one very long-lived radioactive primordial isotope, barium-130, recently identified as being unstable by geochemical means (from analysis of the presence of its daughter xenon-130 in rocks).
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Isotopes of caesium
Caesium (55Cs; or cesium) has 40 known isotopes, making it, along with barium and mercury, the element with the most isotopes.
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Isotopes of curium
Curium (96Cm) is an artificial element with an atomic number of 96.
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Isotopes of dysprosium
Naturally occurring dysprosium (66Dy) is composed of 7 stable isotopes, 156Dy, 158Dy, 160Dy, 161Dy, 162Dy, 163Dy and 164Dy, with 164Dy being the most abundant (28.18% natural abundance).
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Isotopes of gadolinium
Naturally occurring gadolinium (64Gd) is composed of 6 stable isotopes, 154Gd, 155Gd, 156Gd, 157Gd, 158Gd and 160Gd, and 1 radioisotope, 152Gd, with 158Gd being the most abundant (24.84% natural abundance).
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Isotopes of hafnium
Natural hafnium (72Hf) consists of five stable isotopes (176Hf, 177Hf, 178Hf, 179Hf, and 180Hf) and one very long-lived radioisotope, 174Hf, with a half-life of 2×1015 years.
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Isotopes of iron
Naturally occurring iron (26Fe) consists of four stable isotopes: 5.845% of 54Fe (possibly radioactive with a half-life over 3.1×1022 years), 91.754% of 56Fe, 2.119% of 57Fe and 0.282% of 58Fe.
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Isotopes of lead
Lead (82Pb) has four stable isotopes: 204Pb, 206Pb, 207Pb, 208Pb.
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Isotopes of magnesium
Magnesium (12Mg) naturally occurs in three stable isotopes, 24Mg, 25Mg, and 26Mg.
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Isotopes of manganese
Naturally occurring manganese (25Mn) is composed of 1 stable isotope, 55Mn.
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Isotopes of molybdenum
There are 33 known isotopes of molybdenum (42Mo) ranging in atomic mass from 83 to 115, as well as four metastable nuclear isomers.
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Isotopes of neodymium
Naturally occurring neodymium (60Nd) is composed of 5 stable isotopes, 142Nd, 143Nd, 145Nd, 146Nd and 148Nd, with 142Nd being the most abundant (27.2% natural abundance), and 2 long-lived radioisotopes, 144Nd and 150Nd.
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Isotopes of nickel
Naturally occurring nickel (28Ni) is composed of five stable isotopes;,,, and with being the most abundant (68.077% natural abundance).
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Isotopes of niobium
Naturally occurring niobium (41Nb), is composed of one stable isotope (93Nb).
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Isotopes of palladium
Naturally occurring palladium (46Pd) is composed of six stable isotopes, 102Pd, 104Pd, 105Pd, 106Pd, 108Pd, and 110Pd, although two of them are theoretically unstable.
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Isotopes of ruthenium
Naturally occurring ruthenium (44Ru) is composed of seven stable isotopes.
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Isotopes of samarium
Naturally occurring samarium (62Sm) is composed of five stable isotopes, 144Sm, 149Sm, 150Sm, 152Sm and 154Sm, and two extremely long-lived radioisotopes, 147Sm (half life: 1.06 y) and 148Sm (7 y), with 152Sm being the most abundant (26.75% natural abundance).
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Isotopes of silver
Naturally occurring silver (47Ag) is composed of the two stable isotopes 107Ag and 109Ag with 107Ag being the more abundant (51.839% natural abundance).
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Isotopes of technetium
Technetium (43Tc) is the first of the two elements lighter than bismuth that have no non-radioactive isotopes; the other such element is promethium.
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Isotopes of tellurium
There are 38 known isotopes and 17 nuclear isomers of tellurium (52Te), with atomic masses that range from 105 to 142.
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Isotopes of thallium
Thallium (81Tl) has 37 isotopes with atomic masses that range from 176 to 212.
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Isotopes of thorium
Although thorium (90Th) has 6 naturally occurring isotopes, none of these isotopes are stable; however, one isotope, 232Th, is relatively stable, with a half-life of 1.405×1010 years, considerably longer than the age of the Earth, and even slightly longer than the generally accepted age of the universe.
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Isotopes of tungsten
Naturally occurring tungsten (74W) consists of five isotopes.
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Isotopes of xenon
Naturally occurring xenon (54Xe) is made of eight stable isotopes and one very long-lived isotope.
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Isotopes of zirconium
Naturally occurring zirconium (40Zr) is composed of four stable isotopes (of which one may in the future be found radioactive), and one very long-lived radioisotope (96Zr), a primordial nuclide that decays via double beta decay with an observed half-life of 2.0×1019 years; it can also undergo single beta decay, which is not yet observed, but the theoretically predicted value of t1/2 is 2.4×1020 years.
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List of nuclides
This list of nuclides shows observed nuclides that either are stable or, if radioactive, have half-lives longer than one hour.
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Myr
The abbreviation myr, "million years", is a unit of a quantity of (i.e.) years, or 31.6 teraseconds.
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Natural abundance
In physics, natural abundance (NA) refers to the abundance of isotopes of a chemical element as naturally found on a planet.
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Nuclear fission product
Nuclear fission products are the atomic fragments left after a large atomic nucleus undergoes nuclear fission.
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Nucleosynthesis
Nucleosynthesis is the process that creates new atomic nuclei from pre-existing nucleons, primarily protons and neutrons.
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Plutonium-244
Plutonium-244 (244Pu) is an isotope of plutonium that has a half-life of 80 million years.
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Presolar grains
Presolar grains are interstellar solid matter in the form of tiny solid grains that originated at a time before the Sun was formed (presolar: before the Sun).
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Primordial nuclide
In geochemistry, geophysics and geonuclear physics, primordial nuclides, also known as primordial isotopes, are nuclides found on Earth that have existed in their current form since before Earth was formed.
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Radioactive decay
Radioactive decay (also known as nuclear decay or radioactivity) is the process by which an unstable atomic nucleus loses energy (in terms of mass in its rest frame) by emitting radiation, such as an alpha particle, beta particle with neutrino or only a neutrino in the case of electron capture, gamma ray, or electron in the case of internal conversion.
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Radiometric dating
Radiometric dating or radioactive dating is a technique used to date materials such as rocks or carbon, in which trace radioactive impurities were selectively incorporated when they were formed.
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Radionuclide
A radionuclide (radioactive nuclide, radioisotope or radioactive isotope) is an atom that has excess nuclear energy, making it unstable.
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Spontaneous fission
Spontaneous fission (SF) is a form of radioactive decay that is found only in very heavy chemical elements.
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Thorium
Thorium is a weakly radioactive metallic chemical element with symbol Th and atomic number 90.
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Uranium
Uranium is a chemical element with symbol U and atomic number 92.
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Uranium-235
Uranium-235 (235U) is an isotope of uranium making up about 0.72% of natural uranium.
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Uranium-236
Uranium-236 is an isotope of uranium that is neither fissile with thermal neutrons, nor very good fertile material, but is generally considered a nuisance and long-lived radioactive waste.
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Xenon
Xenon is a chemical element with symbol Xe and atomic number 54.
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References
[1] https://en.wikipedia.org/wiki/Extinct_radionuclide
