beta decay

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beta decay

n.
Radioactive decay in which a beta particle is emitted by an atomic nucleus.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

beta decay

n
(General Physics) the radioactive transformation of an atomic nucleus accompanying the emission of an electron. It involves unit change of atomic number but none in mass number. Also called: beta transformation or beta process
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

be′ta decay`


n.
a radioactive process in which a beta particle is emitted from the nucleus of an atom.
[1930–35]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.beta decay - radioactive decay of an atomic nucleus that is accompanied by the emission of a beta particlebeta decay - radioactive decay of an atomic nucleus that is accompanied by the emission of a beta particle
radioactive decay, disintegration, decay - the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation
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References in periodicals archive ?
Attenuation is a major issue in PET imaging, even more so than traditional CT or SPECT imaging, in part because PET requires simultaneous detection of two coincident 511 keV photons released by the annihilation of a positron produced by F18 beta-decay, which increases the likelihood that attenuation will affect the image.
Analysis of Beta-Decay Rates for Ag-108, Ba-133, Eu-152, Eu-154, Kr-85, Ra-226, and Sr-90, Measured at the Physikalisch-Technische Bundesanstalt from 1990 to 1996.
This process is called beta-decay. Double-beta decay is when beta-decay happens twice - two neutrons in an element like germanium decay simultaneously into two electrons and two antineutrinos (or neutrinos).
At Los Alamos scientists have carried out detailed calculations of the specific, individual beta-decay properties of thousands of nuclides, all with different decay properties, and created databases with these calculated properties.
Ito, California Institute of Technology 9:30-9:45 Project of neutron beta-decay A-asymmetry measurement with accuracy on the level [10.sup.-3] A.
The theory was useful and helpful, and that neutrinos are given off as part of the process of Beta decay has been more than adequately confirmed by subsequent observations and experiments (though the particle emitted with the electron in the process of Beta-decay is now called an anti-neutrino, and it is considered an open scientific question whether anti-neutrinos are identical to neutrinos.
However, this tail end of the tritium beta-decay spectrum has a puzzling feature.
Hamish Robertson, director of the Center for Experimental Nuclear Physics and Astrophysics at the University of Washington, Seattle, told Physics World that evidence for solar neutrinos affecting beta-decay is "not persuasive."