Nuclear Energy

Nuclear fission happens naturally every day.as uranium constantly undergoes spontaneous fission very slowly and emits fission products and neutrons. The uranium-239 isotope in natural uranium normally limits this reaction by capturing these neutrons before they could cause additional fissions of uranium-235 isotopes, preventing a chain reaction.

This process can be accelerated in a nuclear reactor by use of a moderator to rapidly slow the neutrons and thus increase the probability that they will trigger other fissions (instead of being captured by uranium-239 first), by participating in a chain reaction.

This process can be accelerated in an atomic bomb by enriching the uranium to between 20% to 95% uranium-235 isotope to increase the probability that they will trigger other fissions (instead of being captured by uranium-239 first), by participating in a chain reaction.

A large radioactive atom breaks into smaller atoms, producing nuclear energy.

Steel-reinforced concrete

Energy contained in bonds within a nucleus that is converted to kinetic energy.

slow down the chain reaction by absorbing free neutrons