beta particle

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beta particle

n.
An electron or positron, especially one emitted at high energy in the decay of certain radioactive nuclei.

beta particle

n
(General Physics) a high-speed electron or positron emitted by a nucleus during radioactive decay or nuclear fission

be′ta par`ticle


n.
an electron or positron emitted from an atomic nucleus in beta decay.
[1900–05]

beta particle

A high-speed electron emitted by an atomic nucleus undergoing radioactive decay. A beta particle is created when a neutron becomes a proton. Beta particles have greater speed and penetrating power than alpha particles. ♦ The process by which a neutron becomes a proton and emits an electron is called beta decay. Beta decay results in the atomic number of an element being increased by one and its mass number staying the same. See more at radiation, radioactive decay.

beta particle

An electron emitted by an isotope undergoing radioactive decay.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.beta particle - a high-speed electron or positron emitted in the decay of a radioactive isotope
subatomic particle, particle - a body having finite mass and internal structure but negligible dimensions
References in periodicals archive ?
As beta particles do not penetrate human skin, so long as you don't eat it, tritium is harmless to humans.
specifications: full leather personal dosimeter optimally stimulable capacity to register hp effective dose 10 of 10 usv 10 sv, beta particles and 200 to 250 msv for usv neutrons.
It can detect alpha and beta particles when fitted with a very thin window.
Beta radiation is a particulate radiation consisting of high-speed electrons, which are rapidly attenuated by biological tissues (2 MeV beta particles have a range of only 1cm in water) (LOMMATZSCH, 1977; REBHUN, 1990; KIRWAN et al.
It detects radiation such as alpha particles, beta particles and gamma rays using the ionization produced in a Geiger--ME-ller tube, which gives its name to the instrument.
The polymer is doped with a phosphor, emitting visible light when irradiated by the beta particles from the tritium.
Nelson said the facility may have accurate measurements as early as Sunday on the number of airborne alpha and beta particles, which can be harmful if inhaled or ingested.
Common contaminants that may be present in municipal water, and well water, include fluoride, if more than 4 ppm, arsenic III and V, chlorine if over 4 ppm, chloramines, chromium 6, lead, pesticides, radioactivity as radon gas, radium, uranium, alpha and beta particles, nitrates, mercury, bacteria, iron and hydrogen sulfide.
Beta particles are released when a neutron in nuclei turns into a proton, or vice versa.
If you had three cookies-one that emits alpha particles, one that emits beta particles, and one that emits gamma rays-which one would you eat, which would you hold, and which would you put in your pocket?
Beta particles (high-energy, high-speed electrons or positrons) can create radicals by pushing electrons from other atomic or molecular orbitals.
Negatively charged beta particles or positively charged alpha particles, positrons or fission fragments may be utilized.