β-particle

https://doi.org/10.1351/goldbook.B00573
Electron ejected from a @R05077@ @N04256@.
Sources:
Green Book, 2nd ed., p. 93 [Terms] [Book]
PAC, 1982, 54, 1533. (Glossary of terms used in nuclear analytical chemistry (Provisional)) on page 1536 [Terms] [Paper]