Particles can collide and rebound {scattering, collision}|.
path
In gas, particles go average distance, through mean free path, before they hit another particle.
elastic
Both particles can collide, bounce off, and remain intact, with no new particles {elastic scattering}.
inelastic
Both particles can collide to make new particles {inelastic scattering}. Created particles go off in pairs in jets perpendicular to colliding-particle paths. Increased amplitude at collision resonance energy indicates particle creation at that mass.
Small particles scatter through wider angles than larger particles, because cross-sectional area is less. Cross-sectional area increases with energy.
particle size
Particles have minimum diameter at 70 to 300 MeV. Particles grow rapidly in diameter up to at least 1500 MeV. At collision energy 2 GeV, particles reach maximum diameter.
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Date Modified: 2022.0224