positron /pos·i·tron/ (poz´ĭ-tron) the antiparticle of an electron; a positively charged electron.
Positron
positron
positron [poz´ĭ-tron]
pos·i·tron (p z  -trn )n. A positively charged particle of the same mass and magnitude of charge as an electron. Also called antielectron, positive electron. |
Positron
One of the small particles that make up an atom. A positron has the same mass and amount of charge as an electron, but the positron has a positive charge.
Mentioned in: Positron Emission Tomography (PET)
positron
[pos′itron]
a positively charged particle emitted from neutron-deficient radioactive nuclei; the antiparticle of an electron.
positron [poz´ĭ-tron]
the antiparticle of the electron. When a positron is emitted by a radionuclide it combines with an electron and both undergo annihilation, producing two 511-keV gamma rays traveling in opposite directions. This effect is used in positron emission tomography.
positron
the antiparticle of the electron. When a positron is emitted by a radionuclide it combines with an electron and both undergo annihilation, producing two 511 keV gamma rays traveling in opposite directions. This effect is used in positron emission tomography (PET).
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