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Spallation

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The American Heritage® Dictionary of the English Language, 4th Edition

n. A nuclear reaction in which many particles are ejected from an atomic nucleus by incident particles of sufficiently high energy.

Wiktionary, Creative Commons Attribution/Share-Alike License

n. A nuclear reaction in which a nucleus fragments into many nucleons.

n. Fragmentation due to stress or impact.

WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

n. (physics) a nuclear reaction in which a bombarded nucleus breaks up into many particles

Word Usage

"Deuterium would be annihilated requiring the present abundance to have been produced at some later stage, such as spallation in shocks around the hypernovae of PopIII stars."

Hypernym

Words that are more generic or abstract

nuclear reaction