Reviews of topical problems

Superradiance and related phenomena

National Research Centre Kurchatov Institute, pl. akad. Kurchatova 1, Moscow, 123182, Russian Federation

The current theory of superradiance is described. The effect is due to interatomic correlations (phase-locking) which arise under the action of a general electromagnetic field and are determined by the competition between the electron motion anharmonicity and the interatomic dipole-dipole interaction. The latter affects significantly the nature of the superradiance effect. A common nature for the radiations from a Dicke atomic ensemble and from collective waves in a substance (for example, cyclotron waves in a magnetized plasma) is established. Superradiance manifests itself in hot magnetically confined plasmas and accounts, among other things, for anomalous heat conductivity in tokamaks.

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Fulltext is also available at DOI: 10.1070/pu1999v042n02ABEH000521
PACS: 42.50.−p, 42.50.Gy, 42.65.−k, 52.35.−g (all)
DOI: 10.1070/pu1999v042n02ABEH000521
Citation: Men’shikov L I "Superradiance and related phenomena" Phys. Usp. 42 107 (1999)
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:    «   » 169 113–154 (1999); DOI: 10.3367/UFNr.0169.199902a.0113

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