beta (beta) particle

be·ta (β) par·ti·cle

(bā'tă-pahr'ti-kĕl)
An electron, either positively (positron, β+) or negatively (negatron, β-) charged, emitted during beta decay of a radionuclide.
Synonym(s): beta ray.

be·ta (β) par·ti·cle

(bā'tă-pahr'ti-kĕl)
An electron, either positively (positron, β+) or negatively (negatron, β-) charged, emitted during beta decay of a radionuclide.
Synonym(s): beta ray.