β-decay

https://doi.org/10.1351/goldbook.B00572
nuclear decay in which a β-particle is emitted or in which orbital electron capture occurs.
Source:
PAC, 1982, 54, 1533. 'Glossary of terms used in nuclear analytical chemistry (Provisional)' on page 1536 (https://doi.org/10.1351/pac198254081533)