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beta decay

   Also found in: Dictionary/thesaurus, Legal, Encyclopedia, Wikipedia 0.01 sec.
decay /de·cay/ (de-ka´)
1. the decomposition of dead matter.
2. the process of decline, as in aging.
beta decay  disintegration of the nucleus of an unstable radionuclide in which the mass number is unchanged, but atomic number is changed by 1, as a result of emission of a negatively or positively charged (beta) particle.
tooth decay  dental caries.
beta decay,
a type of radioactivity that results in the emission of beta particles, either electrons or positrons. See also beta particle.


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In beta decay an unstable nucleus emits an electron (labeled a beta particle before anybody knew what it really was).
Maybe radioactivity hasn't revealed all its mysteries by Siegfried, Tom / Science News
The U-239 rapidly undergoes beta decay to produce Neptunium-239, which rapidly undergoes second beta decay, producing Plutonium-239.
How Did They Harvest the Plutonium Found Orbiting Saturn? by Dilip Dahanukar / News, opinion and commentary community
They highlight new results and developments in such topics as neutron electric dipole moment searches, neutron optics and interferometry, Standard Model tests using neutron beta decay, neutron facilities, neutron polarimetry, and nucleon-nucleon interactions.
Papers and posters presented at the April 2004 International ... by Nico, Jeff / Journal of Research of the National Institute of Standards and Technology
 
 
 
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