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fast-neutron reaction

1. n. [Formation Evaluation]

A neutron interaction in which the neutron is absorbed by the target nuclei, which then emit nuclear particles such as alpha or beta particles, gamma rays, protons or additional neutrons. Fast neutron reactions have a small probability of occurrence relative to the other principal interactions, except at high neutron energy.

See: chemical neutron sourceinelastic neutron scatteringneutron captureneutron generatorneutron interactions