Neutron-induced fission

Definition

Neutron-induced fission is a nuclear reaction where a heavy nucleus, such as Uranium-235, absorbs a neutron and splits into two smaller nuclei, releasing energy and more neutrons. This process is fundamental in both nuclear reactors and atomic bombs.

5 Must Know Facts For Your Next Test

1. Neutron-induced fission releases a significant amount of energy in the form of kinetic energy of the fission fragments and radiation.
2. The process generates additional free neutrons, which can initiate further fission reactions, leading to a chain reaction.
3. Uranium-235 and Plutonium-239 are common isotopes that undergo neutron-induced fission.
4. In medical applications, neutron-induced fission can be used for producing isotopes for cancer treatment.
5. Control rods in nuclear reactors absorb excess neutrons to regulate the fission chain reaction.

Review Questions

• What types of isotopes commonly undergo neutron-induced fission?
• How does neutron-induced fission contribute to the production of energy in nuclear reactors?
• Why are control rods important in the context of neutron-induced fission?

Related terms

Chain Reaction:

A series of reactions where a reactive product or by-product causes additional reactions to take place.

Control Rods: Devices used in nuclear reactors to absorb neutrons and regulate the rate of the fission reaction.

Fission Fragments:

The smaller nuclei produced when a heavy nucleus undergoes fission.