beta particle
US /ˈbeɪtə ˌpɑːrtɪkl/
UK /ˈbeɪtə ˌpɑːrtɪkl/
1.
zarah beta
a fast-moving electron or positron emitted during radioactive decay of an atomic nucleus.
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The radioactive isotope decays by emitting a beta particle.
Isotop radioaktif mereput dengan memancarkan zarah beta.