Gamma Rays

Gamma Rays

  • They are electromagnetic waves of wavelengths shorter than those of X-rays
  • Electrically neutral, are not deflected by electric and magnetic fields.
  • Among the three types of radiation, gamma rays have the strongest penetration power. Gamma rays are stopped by lead of a few centimetres thick
  • Ionisation power of gamma rays is about 1/10 000 that of alpha particles
  • Their emission does not accompany any change in nuclear structure; the nucleus merely descends to a lower energy state.
  • Gamma decay represents the emission of energy from a nucleus which is returning to its ground state.

Excited nucleus → more stable nucleus + γ


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3 thoughts on “Gamma Rays”

    • No, they do not have gamma rays in them. Gamma rays are EM waves – same as the visible light you see. (Except gamma rays are much more energetic) An atom emit gamma rays when they de-excite from an excited state (more energetic state) to a less energetic state. The excess energy when they de-excite is released as gamma rays.


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