Dislocation of atoms in a solid caused by neutron radiation
The Wigner effect (named for its discoverer, Eugene Wigner),[1] also known as the discomposition effect or Wigner's disease,[2] is the displacement of atoms in a solid caused by neutron radiation.
Any solid can display the Wigner effect. The effect is of most concern in neutron moderators, such as graphite, intended to reduce the speed of fast neutrons, thereby turning them into thermal neutrons capable of sustaining a nuclear chain reaction involving uranium-235.
^Wigner, E. P. (1946). "Theoretical Physics in the Metallurgical Laboratory of Chicago". Journal of Applied Physics. 17 (11): 857–863. Bibcode:1946JAP....17..857W. doi:10.1063/1.1707653.
^Rhodes, Richard (1 August 1995). Dark Sun: The Making of the Hydrogen Bomb. Simon & Schuster. ISBN 978-0-68-480400-2. LCCN 95011070. OCLC 456652278. OL 7720934M. Wikidata Q105755363 – via Internet Archive.
The Wignereffect (named for its discoverer, Eugene Wigner), also known as the discomposition effect or Wigner's disease, is the displacement of atoms...
materials such as the graphite moderator in a nuclear reactor (the Wignereffect). The resulting buildup of energy in the material became a matter of...
the process of annealing the graphite was not completed, the possible Wignereffect remained a problem. While considered unlikely, there was the possibility...
A Wigner crystal is the solid (crystalline) phase of electrons first predicted by Eugene Wigner in 1934. A gas of electrons moving in a uniform, inert...
by mid-1946 the Hanford Site reactors were suffering badly from the Wignereffect. Faced with the prospect of no more plutonium for new cores and no more...
The Wigner quasiprobability distribution (also called the Wigner function or the Wigner–Ville distribution, after Eugene Wigner and Jean-André Ville)...
is less than the theoretical density of the material. Frenkel defect Wignereffect Crystallographic defects Kittel, Charles (2005). Introduction to Solid...
In quantum field theory, the Casimir effect (or Casimir force) is a physical force acting on the macroscopic boundaries of a confined space which arises...
close to a reactor core. Nuclear power Nuclear reactor Nuclear safety Wignereffect limited to use only in research reactors due to increased swelling from...
neutron moderator blocks are especially susceptible to this effect, known as Wignereffect, and must be annealed periodically. The Windscale fire was caused...
moderators. This is known as the Wignereffect, after its discoverer, the Manhattan Project scientist Eugene Wigner. These reactors were also required...
technology portal Nuclear cross section Neutron reflector Neutron scattering Wignereffect Miller, Jr., George Tyler (2002). Living in the Environment: Principles...
into the barrier, without transmission on the other side, as a tunneling effect, such as in tunneling into the walls of a finite potential well. Tunneling...
fission products and swelling of the graphite moderator known as the Wignereffect. The swelling damaged the charging tubes where the uranium was irradiated...
article written by the physicist Eugene Wigner, published in Communication in Pure and Applied Mathematics. In it, Wigner observes that a theoretical physics's...
(Wignereffect). The high-energy states can be released by annealing. At least in fcc lattice, interstitials have a large diaelastic softening effect on...
Wigmore Wigner energy, Wignereffect – Eugene WignerWigner–Seitz cell – Eugene Wigner and Frederick Seitz Wilson cycle – John Tuzo Wilson Wilson effect – Alexander...
Running the reactors continuously at full power had resulted in the Wignereffect, swelling of the graphite due to the displacement of the atoms in its...
neutron-induced swelling causing materials to grow in size, and the Wignereffect causing energy buildup in certain materials that can lead to sudden...
and (2J+1)-fold degenerate energy for K=0. Here DJMK is an element of the Wigner D-matrix. The first-order perturbation matrix on basis of the unperturbed...
Thomas–Wigner rotation or Wigner rotation. If a sequence of non-collinear boosts returns an object to its initial velocity, then the sequence of Wigner rotations...
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