1) Nuclear reaction
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https://www.crosswordclues.com/clue/spallation
==Spallation in solid mechanics== Spallation can occur when a tensile stress wave propagates through a material and can be observed in flat plate impact tests. It is caused by an internal cavitation due to stresses, which are generated by the interaction of stress waves, exceeding the local tensile strength of materials. A fragment or multiple fra...
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http://en.wikipedia.org/wiki/Spallation
high-energy nuclear reaction in which a target nucleus struck by an incident (bombarding) particle of energy greater than about 50 million electron ... [3 related articles]
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http://www.britannica.com/eb/a-z/s/135
A nuclear reaction in which several particles result from a collision. In astronomy, spallation typically involves the collision of high-energy cosmic rays with atoms, either in interstellar space or on the surface of objects such as meteorites, asteroids, or the Moon, that are unprotected by an atm...
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http://www.daviddarling.info/encyclopedia/S/spallation.html
the abrasion and removal of fragments of a target which is bombarded by protons in an accelerator. The fragments may be protons, neutrons or other light particles
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http://www.encyclo.co.uk/local/20725
Synonym: fragmentation. ... 2. Nuclear reaction in which nuclei, on being bombarded by high energy particles, liberate a number of protons and alpha particles. ... Origin: M.E. Spalle, fragment ... (05 Mar 2000) ...
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http://www.encyclo.co.uk/local/20973
Type: Term Pronunciation: spaw-lā′shŭn Definitions: 1. Nuclear reaction in which nuclei, on being bombarded by high energy particles, liberate a number of protons and alpha particles. Synonyms: fragmentation
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http://www.medilexicon.com/medicaldictionary.php?t=83207
is the production of light nuclei in collisions between either an energetic heavy nucleus and a low energy proton of the interstellar medium or an energetic proton and a low energy heavy nucleus of the interstellar medium. This process accounts for the relatively high abundance of Be, Li and B in cosmic rays.
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http://www.sheffield.ac.uk/polopoly_fs/1.14548!/file/glossary.pdf
[
n] - (physics) a nuclear reaction in which a bombarded nucleus breaks up into many particles
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http://www.webdictionary.co.uk/definition.php?query=spallation
noun (physics) a nuclear reaction in which a bombarded nucleus breaks up into many particles; `some astronomers believe that the solar system was formed by spallation when the sun was a very young star`
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https://www.encyclo.co.uk/local/20974
the abrasion and removal of fragments of a target which is bombarded by protons in an accelerator. The fragments may be protons, neutrons or other light particles.
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https://www.world-nuclear.org/nuclear-basics/glossary.aspx
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