← Practice identify → balance → model → check
01 Chain Reactions & Criticality Problems N = N₀k^g generation growth, critical mass reasoning, doubling times, and chain energy release. → 02 Inside a Fission Reactor Problems Moderators, fissions per second from thermal power, enrichment, fuel mass per year, and coal comparisons. → 03 Fusion & the Coulomb Barrier Problems The D–T Q value from masses, U = kq₁q₂/r barriers, (3/2)kT temperatures, and tritium budgets. → 04 Fusion Technology Problems Magnetic and inertial confinement, Lawson triple products, gyroradii, and the 14 MeV neutron. → 05 Radiation Safety & Nuclear Waste Problems Grays and sieverts, weighting factors, annual dose budgets, and waste decay horizons. → 06 Fission & Fusion Calculus Problems dN/dt = (k − 1)N/τ, reactor periods and doubling times, burn-up integrals, and breeding equilibrium. →