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 ?
It can be anticipated that the contribution of any alpha emission into the region below the [sup.3]H cut-off would be less than that seen in the limbo region.
The background-subtracted and decay-corrected massic LS rate [R.sub.LS] could be related to the massic alpha emission rate through the application of a very small correction factor k given in the Appendix:
Lyman alpha emissions, with a wavelength of 121.6 nanometers, are the principal signature of hydrogen atoms in the universe and are used as indicators of the formation of stars in galaxies shortly after the Big Bang (the primordial universe).
The measurements are from Voyager's ultraviolet spectrometer, or UVS, and include readings of what are called Lyman alpha emissions, given off by hydrogen atoms such as those released from water.
The glow, from the Lyman alpha emissions of molecular hydrogen, "is interpreted as an auroral emission from an active magnetosphere,' according to John T.