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Nuclear & Particle Physics

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Nuclear & Particle Physics

Alpha Decay

A radioactive decay process in which an unstable heavy nucleus emits an alpha particle (Helium-4 nucleus, ⁴₂He²⁺).

ᴬ_Z X → ᴬ⁻⁴_(Z-2) Y + ⁴₂He (Q_alpha = E_kinetic) MeV (Kinetic Energy)
Nuclear & Particle Physics

Antimatter

Subatomic material composed of antiparticles that share identical mass, spin, and lifetime as normal matter particles but possess opposite…

e⁺ + e⁻ → 2 γ (511 keV gamma photons) Energy (MeV / GeV)
Nuclear & Particle Physics

Atomic Nucleus

The extremely dense, positively charged central core of an atom containing virtually all of its mass, composed of protons and neutrons…

R ≈ R₀ A^(1/3), R₀ ≈ 1.2 fm fm (Femtometers = 10⁻¹⁵ m)