出典:Wiktionary
出典:『Wiktionary』 (2026/04/10 17:52 UTC 版)
From positive + -tron (electron). Coined by American physicist Carl Anderson in 1932 to replace the earlier term antielectron.
出典:Wikipedia
出典:『Wikipedia』 (2011/06/11 21:02 UTC 版)
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 1⁄2, and 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).
名詞の変化形:
|