Fission fragments

Definition

Fission fragments are the atomic nuclei produced by the splitting of a heavier nucleus during nuclear fission. These fragments are typically highly unstable and radioactive, emitting particles as they decay.

5 Must Know Facts For Your Next Test

1. Fission fragments are usually isotopes of elements in the middle of the periodic table, such as barium and krypton.
2. The process of fission releases a large amount of energy because the binding energy per nucleon is higher in the resulting smaller nuclei.
3. Each fission event typically produces two primary fission fragments along with several neutrons.
4. Fission fragments undergo beta decay to reach more stable forms, releasing additional radiation that can be used in medical applications.
5. The distribution of masses and charges among fission fragments is not symmetrical; one fragment is usually lighter and one is heavier.

Review Questions

• What types of elements are typically produced as fission fragments?
• Why are fission fragments highly radioactive?
• How many primary fission fragments are generally produced from a single fission event?

Related terms

Nuclear Fission:

A nuclear reaction where a heavy nucleus splits into smaller nuclei, releasing a significant amount of energy along with neutrons.

Beta Decay:

A type of radioactive decay where a beta particle (electron or positron) is emitted from an unstable nucleus.

Binding Energy:

The energy required to disassemble a nucleus into its constituent protons and neutrons, indicative of its stability.