beta particle

beta particle
an electron or positron emitted from an atomic nucleus in a certain type of radioactive decay.

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      electron (unit negative charge) or positron (unit positive charge) spontaneously emitted by certain unstable atomic nuclei in the radioactive disintegration process of beta decay (q.v.).

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Universalium. 2010.

Look at other dictionaries:

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  • beta particle — n a high speed electron specif one emitted during radioactive decay of an atomic nucleus * * * an electron emitted from an atomic nucleus during beta decay …   Medical dictionary

  • beta particle — n. an electron or positron ejected at high velocity from the nucleus of an atom undergoing beta decay …   English World dictionary

  • beta particle — (or ray) ► NOUN Physics ▪ a fast moving electron emitted by some radioactive substances …   English terms dictionary

  • beta particle — noun a high speed electron or positron emitted in the decay of a radioactive isotope • Hypernyms: ↑particle, ↑subatomic particle * * * ˈbeta particle 8 [beta particle beta particles] (also …   Useful english dictionary

  • beta particle — Synonyms and related words: Kern, NMR, alpha particle, antibaryon, antilepton, antimeson, atomic nucleus, atomic particle, aurora particle, baryon, cathode particle, electron, electron affinity, electron cloud, electron pair, electron shells,… …   Moby Thesaurus

  • beta particle — /bitə ˈpatɪkəl/ (say beetuh pahtikuhl) noun an electron or positron spontaneously emitted by some radioactive nuclei, or produced in a particle accelerator such as a betatron …   Australian-English dictionary

  • beta particle — noun Date: 1904 a high speed electron; specifically one emitted by a radioactive nucleus in beta decay …   New Collegiate Dictionary

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