beta particle
noun/ˈbiːtə pɑːtɪkl/
/ˈbeɪtə pɑːrtɪkl/
(also beta ray
(physics)/ˈbiːtə reɪ/
/ˈbeɪtə reɪ/
)- a fast-moving electron that is produced when some radioactive substances decay (= start to break down)
- the properties of beta particles
- beta particle emission
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beta particle