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Substance Name: Beta Particle
RN: 12587-47-2


  • A stream of positive or negative electrons ejected with high energy from a disintegrating atomic nucleus; most biomedically used isotopes emit negative particles (electrons or negatrons, rather than positrons). Cathode rays are low-energy negative electrons produced in cathode ray tubes, also called television tubes or oscilloscopes.
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Names and Synonyms

Results Name

  • Beta Particle

Name of Substance

  • Beta Rays

MeSH Heading

  • Beta Rays


  • Beta particles
  • Beta Radiation
  • beta-Ray
  • Cathode Rays
  • Radiation, beta

Systematic Name

  • Beta Particle

Registry Numbers

CAS Registry Number

  • 12587-47-2

System Generated Number

  • 0012587472