photodisintegration

photodisintegration

[foh-toh-di-sin-ti-grey-shuhn]
noun Physics.
the disintegration of a nucleus, induced by its absorption of a photon.

Origin:
1930–35; photo- + disintegration

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To photodisintegration
Collins
World English Dictionary
photodisintegration (ˌfəʊtəʊdɪˌsɪntɪˈɡreɪʃən)
 
n
disintegration of an atomic nucleus as a result of its absorption of a photon, usually a gamma ray

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Encyclopedia Britannica
Encyclopedia

photodisintegration

in physics, nuclear reaction in which the absorption of high-energy electromagnetic radiation (a gamma-ray photon) causes the absorbing nucleus to change to another species by ejecting a subatomic particle, such as a proton, neutron, or alpha particle. For example, magnesium-25, upon absorbing a photon of sufficient energy, emits a proton and becomes sodium-24. Photodisintegration differs from the nuclear reaction photofission, in which a nucleus, upon absorbing a photon, splits into two fragments of nearly equal mass

Learn more about photodisintegration with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source
Related Words
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature