beta particle

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beta particle

Physics a high-speed electron or positron emitted by a nucleus during radioactive decay or nuclear fission
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

beta particle

An energetic electron or positron ejected by beta decay.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

beta particle

[′bād·ə ‚pard·ə·kəl]
(nuclear physics)
An electron or positron emitted from a nucleus during beta decay.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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References in periodicals archive ?
Beta rays come from an e-beam generator, which provides the same features as gamma radiation but with reduced penetrating power.
Ionisos, a major partner in sterilization
The water discharged contained a maximum 24 becquerels per liter of radioactive substances emitting beta rays, lower than the allowable level of 30 becquerels.
Rainwater dumped into sea from Fukushima plant totals 1,130 tons
The revelation came a day after the utility announced that the same water sample contained 2.35 billion becquerels of cesium and 750 million becquerels of other, unnamed radioactive substances, including strontium, that emit beta rays, the Japan Times reports.
High level radioactive Tritium detected in Fukushima trench water
By now it was understood that beta rays were streams of speeding electrons (beta particles), while gamma rays were electromagnetic radiation of still shorter wavelength and higher frequency than X rays.
Alpha particles
The ocean contains a certain amount of radioactive potassium, which emits beta rays that produce Cherenkov light of their own.
Seeking neutrinos under the ocean
said it detected in the leaked water radioactive substances emitting beta rays, with an extremely high reading of 80 million becquerels per liter, the utility said.
300 tons of contaminated water leak from tanks at Fukushima plant
The water also contained 900,000 becquerels of other radioactive substances that emit beta rays, including strontium.
Fukushima nuclear plant suspected to be leaking radioactive water into Pacific Ocean

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