Minimal Nuclear Fission — One U‑235, One Neutron, Two Fragments

Neutron speed 4
Ba‑141 Kr‑92 Neutron Neutron Neutron + Energy U-235 n
U‑235 nucleus Neutrons Fission fragments Energy blast
Ready: neutron will strike U‑235 and split it into two fragments + 2–3 neutrons.
Conceptual demo