Wigner energy

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Energy stored in a crystalline substance as a result of irradiation. This phenomenon is known as the Wigner effect. For example, some of the energy lost by neutrons in a nuclear reactor is stored by the graphite moderator. As a result, the crystal lattice is changed and there is a consequent change in the physical dimensions of the moderator. It is named after the US physicist of Hungarian origin, Eugene Wigner (1902–95).

Subjects: Physics.

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