beta decay

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Related to Beta-decay: Beta emission

beta decay

a type of radioactivity that results in the emission of beta particles, either electrons or positrons. See also beta particle.

beta decay

Low-level radioactive decay in which particles, usually an electron with an antineutrino, or less commonly a positron with an antineutrino, are emitted.
References in periodicals archive ?
Factoring in both the positional dependence of the effciency and the beta-decay spectrum of the electrons, we obtain a detection effciency of (48 [+ or -] 6) % when photomultiplier tube (PMT) threshold levels are set to three or more photoelectrons (see Ref.
Neutron radiative beta-decay has never been definitively observed.
In addition, the neutron polarization can also be determined by directly fitting a beta-decay asymmetry that is proportional to the neutron polarization.
Radiocarbon dating by counting the electrons emitted during these so-called beta-decays therefore requires a large sample and a long counting time to obtain enough detector counts for a precise age estimate.