英语词汇“beta particle”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

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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