File:PositronDiscovery.png · Wikimedia Commons · See Wikimedia Commons
โพซิตรอน
Sign in to saveAlso known as antielectron, positive electron
The positron or antielectron is the particle with an electric charge of +1e, a spin of 1/2 ħ (the same as the electron), and the same mass as an electron. It is the antiparticle (antimatter counterpart) of the electron. When a positron collides with an electron, annihilation occurs. If this collision occurs at low energies, it results in the production of two or more photons.
A positron is a particle with the same mass and spin as an electron but with a positive electric charge instead of negative, making it the antimatter counterpart of the electron. When a positron and electron collide, they annihilate each other and convert into energy in the form of photons, which is the basis for medical imaging technology like PET scans.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Particle.caption
- Cloud chamber photograph by C. D. Anderson of the first positron ever identified. A 6 mm lead plate separates the chamber. The deflection and direction of the particle's ion trail indicate that the particle is a positron.
- Particle.composition
- Elementary particle
- Particle.statistics
- Fermionic
- Particle.generation
- First
- Particle.interaction
- Gravity, electromagnetic, weak
- Particle.antiparticle
- Electron
- Particle.theorized
- Paul Dirac (1928)
- Particle.discovered
- Carl D. Anderson (1932)
- Particle.symbol
- ,
- Particle.mass
- me
- Particle.mean_lifetime
- stable (same as electron)
- Particle.electric_charge
- +1 e+
- Particle.spin
- ħ (same as electron)
- Particle.name
- Positron (antielectron)
- Particle.image
- 200px
via Wikipedia infobox
Wikidata facts
- Instance of
- particle physics
- Subclass of
- elementary particle
- Part of
- particle physics
- Followed by
- antimuon
- Mass
- 0.5109989461
- Image
- PositronDiscovery.jpg
Show 11 more facts
- Monte Carlo Particle Number
- -11
- spin quantum number
- 0.5
- Commons category
- Positrons
- interaction
- weak interaction
- antiparticle
- electron
- electric charge
- 1
- discoverer or inventor
- Carl David Anderson
- time of discovery or invention
- 1932-00-00
- theorized by
- Paul Dirac
- different from
- electron hole
- on focus list of Wikimedia project
- Wikipedia:Vital articles/Level/4
via Wikidata · CC0
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