/foh'toh di sin'ti gray"sheuhn/, n. Physics.
the disintegration of a nucleus, induced by its absorption of a photon.

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also called  Phototransmutation,  

      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.

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Universalium. 2010.

Look at other dictionaries:

  • Photodisintegration — is a physical process in which extremely high energy gamma rays interact with an atomic nucleus and cause it to enter an excited state, which immediately decays into two or more daughter nuclei. A simple example is when a single proton or neutron …   Wikipedia

  • photodisintegration — [fōt΄ō dis in΄tə grā′shən] n. Physics a nuclear reaction induced by the action of a photon …   English World dictionary

  • photodisintegration — “+ noun Etymology: phot + disintegration : a disintegration of the nucleus of an atom produced by absorption of radiant energy compare electrodisintegration * * * /foh toh di sin ti gray sheuhn/, n. Physics. the disintegration of a nucleus,… …   Useful english dictionary

  • photodisintegration — noun Date: 1935 disintegration of the nucleus of an atom caused by absorption of radiant energy (as light) • photodisintegrate transitive verb …   New Collegiate Dictionary

  • photodisintegration — noun Any nuclear reaction, especially a nuclear fission, initiated by absorption of high energy electromagnetic radiation such as a gamma ray …   Wiktionary

  • Photodisintegration — Фоторасщепление; фотораспад …   Краткий толковый словарь по полиграфии

  • photodisintegration — pho·to·disintegration …   English syllables

  • photodisintegration — pho•to•dis•in•te•gra•tion [[t]ˌfoʊ toʊ dɪˌsɪn tɪˈgreɪ ʃən[/t]] n. phs the disintegration of a nucleus upon its absorption of a photon • Etymology: 1930–35 …   From formal English to slang

  • photodisintegration — /ˌfoʊtoʊdɪsɪntəˈgreɪʃən/ (say .fohtohdisintuh grayshuhn) noun any nuclear reaction caused by a high energy photon which results in the emission of charged fragments or neutrons …   Australian English dictionary

  • Nuclear drip line — In nuclear physics, the boundaries for nuclear particle stability are conceptualized as drip lines. The nuclear landscape is understood by plotting boxes, each of which represents a unique nuclear species, on a graph with the number of neutrons… …   Wikipedia

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