alpha emission


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Related to alpha emission: gamma emission, Beta emission

alpha emission

[′al·fə i′mish·ən]
(nuclear physics)
Ejection of alpha particles from the atom's nucleus.
References in periodicals archive ?
As a result, astronomers on Earth will be able to test models that have been developed to interpret observations of the Lyman alpha emission from very distant galaxies, where the emission is associated with the first bursts of forming stars.
Nussbaum makes three points, namely that on the basis of the "source term" for the Chernobyl accident population, doses are underestimated by a factor up to 26, that Chernobyl dose estimates ignore exposure to alpha emissions, and that excess perinatal mortality and morbidity have been widely observed outside the main contaminated regions.