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beta decay

A Dictionary of Earth Sciences | 1999 | | © A Dictionary of Earth Sciences 1999, originally published by Oxford University Press 1999. (Hide copyright information) Copyright

beta decay Some unstable atoms decay by emitting a negatively charged beta particle (negatron) from the nucleus, often accompanied by the emission of radiant energy (gamma rays). Beta decay may be regarded as the alteration of a neutron into a proton and an electron. As a result of beta decay the atomic number of the atom is increased by one, while the neutron number is decreased by one.

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AILSA ALLABY and MICHAEL ALLABY. "beta decay." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 17 Dec. 2009 <http://www.encyclopedia.com>.

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