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单词 beta particle
释义

beta particle

(also beta ray)
noun Physics
A fast-moving electron emitted by radioactive decay of substances (originally regarded as rays).When it decays it emits a beta particle and a gamma ray, leaving behind a protactinium - 234 atom....
  • During this process (mediated by a virtual W - particle) the nucleus expels a negative beta particle (electron or negatron) as radiation.
  • The weak nuclear force is involved, and the neutron is converted into a proton when the beta particle is emitted.
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更新时间:2024/11/13 19:00:01