Direct observation of the electron and positron capture process

Positrons are anti-particles of electrons. At SuperKEKB B-Factory (SuperKEKB), they are produced in copious amounts and smashed into electrons at world-record luminosity. By studying the hundreds of decay patterns of B mesons ...

Daylight hours impact opioid receptor levels in brown fat

Researchers from the Turku PET Centre, Finland, have observed that the length of daylight hours impacts opioid receptor levels in brown fat. When daylight hours shorten, the receptor activity levels elevate. A similar phenomenon ...

The collective movement of nanorobots observed in vivo

Nanobots are machines whose components are at the nano-scale (one-millionth of a millimeter), and can be designed in such a way that they have the ability to move autonomously in fluids. Although they are still in the research ...

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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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