Spallation
noun, Physics.
1.
a nuclear reaction in which several nucleons are released from the nucleus of an atom.
noun
1.
(physics) a type of nuclear reaction in which a photon or particle hits a nucleus and causes it to emit many other particles or photons
spallation spal·la·tion (spô-lā’shən)
n.
A nuclear reaction in which nuclei are bombarded by high-energy particles, causing the liberation of protons and alpha particles.
Fragmentation.
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