Non-monotonic temperature and density trajectories (left column) and key mass fraction profiles (right column) for initial conditions T ₉ = 9, ρ = 10 ⁷ g cm ⁻³, and Y _e = 0.48. The top row is a profile where the ⁶⁰Fe yield is approximately maximized, while the profile at the bottom row tends to maximize the ⁴⁴Ti yield within our data set.