A process in which a change in direction or energy of an incident radiation is caused by interaction with a particle, a system of particles, or a photon.
PAC, 1982, 54, 1533 (Glossary of terms used in nuclear analytical chemistry (Provisional)) on page 1551
PAC, 1990, 62, 2167 (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2212