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Beta decay

Ciro Santilli (@cirosantilli, 37) ... Physics Particle physics Nuclear physics Nuclear reaction Radioactive decay Type of radioactive decay
Updated 2025-07-16  1 By others on same topic  0 Discussions Create my own version
Uranium emits them, you can see their mass to charge ratio under magnetic field and so deduce that they are electrons.
Caused by weak interaction TODO why/how.
The emitted electron kinetic energy is random from zero to a maximum value. The rest goes into a neutrino. This is how the neutrino was first discovered/observed indirectly. This is well illustrated in a decay scheme such as Figure "caesium-137 decay scheme".

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