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- Neutron_activation abstract "Neutron activation is the process in which neutron radiation induces radioactivity in materials, and occurs when atomic nuclei capture free neutrons, becoming heavier and entering excited states. The excited nucleus often decays immediately by emitting gamma rays, or particles such as electrons (beta rays), alpha particles, or fission products and neutrons (in nuclear fission). Thus, the process of neutron capture, even after any intermediate decay, often results in the formation of an unstable activation product. Such radioactive nuclei can exhibit half-lives ranging from small fractions of a second to many years. Neutron activation is the only common way that a stable material can be induced into becoming intrinsically radioactive. All naturally-occurring materials, including air, water, and soil, can be induced (activated) by neutron capture into some amount of radioactivity in varying degrees, as a result of production of neutron-rich radioisotopes. Some atoms require more than one neutron to become unstable, which makes them harder to activate because the probability of a double or triple capture by a nucleus is below that of single capture. Water, for example, is made up of hydrogen and oxygen. Hydrogen requires a double capture to attain instability as hydrogen-3, tritium, while oxygen requires three captures to become unstable oxygen-19. Thus water is relatively difficult to activate, as compared to sea salt (NaCl), in which both the sodium and chlorine atoms become unstable with a single capture each. These facts were realized first-hand at the Operation Crossroads atomic test series in 1946.".
- Neutron_activation wikiPageExternalLink technical-reports-series-156.pdf.
- Neutron_activation wikiPageExternalLink www.naa-online.net.
- Neutron_activation wikiPageExternalLink chart.
- Neutron_activation wikiPageExternalLink chromium-adndt.pdf.
- Neutron_activation wikiPageExternalLink rp12.pdf.
- Neutron_activation wikiPageExternalLink lecture16.html.
- Neutron_activation wikiPageExternalLink table.htm.
- Neutron_activation wikiPageID "1767692".
- Neutron_activation wikiPageRevisionID "601473418".
- Neutron_activation hasPhotoCollection Neutron_activation.
- Neutron_activation subject Category:Neutron.
- Neutron_activation subject Category:Radiation.
- Neutron_activation subject Category:Radiation_effects.
- Neutron_activation type Consequence111410625.
- Neutron_activation type Phenomenon100034213.
- Neutron_activation type PhysicalEntity100001930.
- Neutron_activation type Process100029677.
- Neutron_activation type RadiationEffects.
- Neutron_activation comment "Neutron activation is the process in which neutron radiation induces radioactivity in materials, and occurs when atomic nuclei capture free neutrons, becoming heavier and entering excited states. The excited nucleus often decays immediately by emitting gamma rays, or particles such as electrons (beta rays), alpha particles, or fission products and neutrons (in nuclear fission).".
- Neutron_activation label "Activation neutronique".
- Neutron_activation label "Activação neutrónica".
- Neutron_activation label "Aktywacja neutronowa".
- Neutron_activation label "Attivazione neutronica".
- Neutron_activation label "Neutron activation".
- Neutron_activation label "Neutronenactivering".
- Neutron_activation label "Neutronenaktivierung".
- Neutron_activation label "中子活化".
- Neutron_activation sameAs Neutronenaktivierung.
- Neutron_activation sameAs Activation_neutronique.
- Neutron_activation sameAs Attivazione_neutronica.
- Neutron_activation sameAs Neutronenactivering.
- Neutron_activation sameAs Aktywacja_neutronowa.
- Neutron_activation sameAs Activação_neutrónica.
- Neutron_activation sameAs m.05vbxz.
- Neutron_activation sameAs Q901707.
- Neutron_activation sameAs Q901707.
- Neutron_activation sameAs Neutron_activation.
- Neutron_activation wasDerivedFrom Neutron_activation?oldid=601473418.
- Neutron_activation isPrimaryTopicOf Neutron_activation.