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Wigner effect

Index Wigner effect

The Wigner effect (named for its discoverer, Eugene Wigner), also known as the discomposition effect or Wigner's Disease, is the dislocation of atoms in a solid caused by neutron radiation. [1]

24 relations: Annealing (metallurgy), Atom, Celsius, Chernobyl disaster, Collision cascade, Crystal structure, Dislocation, Elastic collision, Electronvolt, Energy, Eugene Wigner, Frenkel defect, Graphite, Interstitial defect, Neutron, Neutron moderator, Neutron radiation, Neutron temperature, Nuclear reactor, Prompt criticality, Threshold displacement energy, Uranium-235, Vacancy defect, Windscale fire.

Annealing (metallurgy)

Annealing, in metallurgy and materials science, is a heat treatment that alters the physical and sometimes chemical properties of a material to increase its ductility and reduce its hardness, making it more workable.

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Atom

An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element.

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Celsius

The Celsius scale, previously known as the centigrade scale, is a temperature scale used by the International System of Units (SI).

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Chernobyl disaster

The Chernobyl disaster, also referred to as the Chernobyl accident, was a catastrophic nuclear accident.

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Collision cascade

A collision cascade (also known as a displacement cascade or a displacement spike) is a set of nearby adjacent energetic (much higher than ordinary thermal energies) collisions of atoms induced by an energetic particle in a solid or liquid.

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Crystal structure

In crystallography, crystal structure is a description of the ordered arrangement of atoms, ions or molecules in a crystalline material.

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Dislocation

In materials science, a dislocation or Taylor's dislocation is a crystallographic defect or irregularity within a crystal structure.

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Elastic collision

An elastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies after the encounter is equal to their total kinetic energy before the encounter.

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Electronvolt

In physics, the electronvolt (symbol eV, also written electron-volt and electron volt) is a unit of energy equal to approximately joules (symbol J).

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Energy

In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object.

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Eugene Wigner

Eugene Paul "E.

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Frenkel defect

A Frenkel defect or dislocation defect is a type of defect in crystalline solids wherein an atom is displaced from its lattice position to an interstitial site, creating a vacancy at the original site and an interstitial defect at the new location without any changes in chemical properties.

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Graphite

Graphite, archaically referred to as plumbago, is a crystalline allotrope of carbon, a semimetal, a native element mineral, and a form of coal.

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Interstitial defect

Interstitials defects are a variety of crystallographic defects where atoms assume a normally unoccupied site in the crystal structure.

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Neutron

| magnetic_moment.

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Neutron moderator

In nuclear engineering, a neutron moderator is a medium that reduces the speed of fast neutrons, thereby turning them into thermal neutrons capable of sustaining a nuclear chain reaction involving uranium-235 or a similar fissile nuclide.

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Neutron radiation

Neutron radiation is a form of ionizing radiation that presents as free neutrons.

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Neutron temperature

The neutron detection temperature, also called the neutron energy, indicates a free neutron's kinetic energy, usually given in electron volts.

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Nuclear reactor

A nuclear reactor, formerly known as an atomic pile, is a device used to initiate and control a self-sustained nuclear chain reaction.

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Prompt criticality

In nuclear engineering, prompt criticality is said to be reached during a nuclear fission event if one or more of the immediate or prompt neutrons released by an atom in the event causes an additional fission event resulting in a rapid, exponential increase in the number of fission events.

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Threshold displacement energy

The threshold displacement energy T_d is the minimum kinetic energy that an atom in a solid needs to be permanently displaced from its lattice site to a defect position.

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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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Vacancy defect

In crystallography, a vacancy is a type of point defect in a crystal.

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Windscale fire

The Windscale fire of 10 October 1957 was the worst nuclear accident in Great Britain's history, ranked in severity at level 5 out of a possible 7 on the International Nuclear Event Scale.

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Redirects here:

Discomposition effect, Wigner Effect, Wigner energy, Wigner release, Wigner's disease.

References

[1] https://en.wikipedia.org/wiki/Wigner_effect

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