AQA GCSE Physics

Revision Notes

4.2.6 Gamma Decay

Gamma Decay

  • During gamma decay, a gamma ray is emitted from an unstable nucleus
  • The process that makes the nucleus less energetic but does not change its structure

Gamma decay, downloadable IGCSE & GCSE Physics revision notes

Gamma decay does not affect the mass number or the atomic number of the radioactive nucleus, but it does reduce the energy of the nucleus

  • The gamma ray that is emitted has a lot of energy, but no mass or charge
  • Here is an example of Uranium-238 undergoing gamma decay
    • Notice that the mass number and atomic number of the unstable nuclei remains the same during the decay

Gamma decay equation, downloadable IGCSE & GCSE Physics revision notes

Although the Uranium nucleus is unchanged in structure, its energy reduces during gamma decay

Author: Katie

Katie has always been passionate about the sciences, and completed a degree in Astrophysics at Sheffield University. She decided that she wanted to inspire other young people, so moved to Bristol to complete a PGCE in Secondary Science. She particularly loves creating fun and absorbing materials to help students achieve their exam potential.
Close

Join Save My Exams

Download all our Revision Notes as PDFs

Try a Free Sample of our revision notes as a printable PDF.

Join Now
Already a member?
Go to Top