Updated manuals generally group problems into several critical units to ensure a logical progression of learning:

Problem 1: Nuclear Composition

• Binding energy per nucleon trends; energy release estimates for fission and fusion Q-values.
• Fission barrier, saddle point, and fragment distributions; basics of chain reactions and criticality (k_eff).
• Simple fusion: D–T fusion Q and cross-section trends with energy; Gamow window for astrophysical fusion.
• Example: compute energy release per reaction and per kg of fuel.