What is a gamma ray?

A high-energy photon emitted by an excited nucleus.

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  1. A helium nucleus
  2. A slow neutron
  3. A high-energy photon emitted by an excited nucleus ✔

Why: Gamma decay releases a high-energy photon as the nucleus drops to a lower energy state.

Huh, didn't know that: Gamma decay releases a high-energy photon as the nucleus drops to a lower energy state.

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Gamma rays are photons with serious energy.
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References

Answer: A high-energy photon emitted by an excited nucleus. Gamma decay releases a high-energy photon as the nucleus drops to a lower energy state.

  1. Nuclear physics en.wikipedia.org/wiki/Nuclear_physics
    emitting high-energy photons (gamma decay)
    Checked 2026-11-07.

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