annihilation

Examples of annihilation in the following topics:

• Matter and Antimatter

  • Furthermore, mixing matter and antimatter can lead to the annihilation of both, in the same way that mixing antiparticles and particles does.
  • If antimatter-dominated regions of space existed, the gamma rays produced in annihilation reactions along the boundary between matter and antimatter regions would be detectable.

• Photon Interactions and Pair Production

  • The electron and positron can annihilate and produce two 0.511 MeV gamma photons.
  • If all three gamma rays, the original with its energy reduced by 1.022 MeV and the two annihilation gamma rays, are detected simultaneously, then a full energy peak is observed.

• Emission Topography

  • The encounter annihilates both electron and positron, producing a pair of annihilation (gamma) photons moving in approximately opposite directions.

• Energy, Mass, and Momentum of Photon

  • A photon can also be emitted when a particle and its corresponding antiparticle are annihilated.