Electron-Positron Pair
An electron-positron pair is a subatomic particle pair consisting of an electron and a positron. When a high-energy photon interacts with matter, it can produce an electron-positron pair through a process called pair production. In space and astronautical engineering, electron-positron pairs are important because they can be produced in the intense radiation fields found in space, such as near pulsars or in the vicinity of black holes. The detection of electron-positron pairs can provide valuable information about these extreme environments. Additionally, electron-positron pairs can be used in positron emission tomography (PET) imaging, a medical imaging technique that uses the annihilation of positrons with electrons to produce gamma rays that can be detected and used to create images of the body.
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