beta decay

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beta decay

n.
Radioactive decay in which a beta particle is emitted by an atomic nucleus.

beta decay

n
(General Physics) the radioactive transformation of an atomic nucleus accompanying the emission of an electron. It involves unit change of atomic number but none in mass number. Also called: beta transformation or beta process

be′ta decay`


n.
a radioactive process in which a beta particle is emitted from the nucleus of an atom.
[1930–35]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.beta decay - radioactive decay of an atomic nucleus that is accompanied by the emission of a beta particlebeta decay - radioactive decay of an atomic nucleus that is accompanied by the emission of a beta particle
radioactive decay, disintegration, decay - the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation
References in periodicals archive ?
The other 99 percent is uranium-238, which is not fissile but rather fertile; if it gains a neutron of the right energy, it turns into uranium-239, which after a couple of beta decays becomes fissile plutonium-239.
The new, unexpected result is that so much energy escapes by neutrino emission that the remaining energy released in the beta decays is not sufficient to ignite the X-ray superbursts that are observed.
beta decays [4], CKM unitarity (assumes conserved vector current, CKM unitarity, and values of |[V.
Another class of effects leads to gamma ray asymmetries from beta decays of polarized nuclei produced by interactions of the beam with materials upstream of the hydrogen target.
The entire experiment is inside a room-sized tank that chills it to 160 kelvins to increase the incidence of beta decays as the gas moves along.