Positron luminescence outshines that of electrons

In old cathode ray TVs, a picture is generated when an electron beam excites a phosphor screen, causing the phosphor to radiate light. Now in a new study, researchers have found that a beam of positrons (positively charged ...

IHEP in China has ambitions for Higgs factory

Who will lay claim to having the world's largest particle smasher?. Could China become the collider capital of the world? Questions tease answers, following a news story in Nature on Tuesday. Proposals for two particle accelerators ...

New data from PAMELA provides better measure of positrons

(Phys.org) —A large team made up of researchers from several European countries (Italy, Russia, Sweden and Germany) has published, in the journal Physical Review Letters, the latest findings from the Payload for Antimatter/Matter ...

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Positron

The positron or antielectron is the antiparticle or the antimatter counterpart of the electron. The positron has an electric charge of +1e, a spin of ½, and has the same mass as an electron. When a low-energy positron collides with a low-energy electron, annihilation occurs, resulting in the production of two or more gamma ray photons (see electron-positron annihilation).

Positrons may be generated by positron emission radioactive decay (through weak interactions), or by pair production from a sufficiently energetic photon.

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