alpha particle (plural alpha particles)
- (physics) A doubly positively charged nucleus of a helium-4 atom (consisting of two protons and two neutrons), emitted as a consequence of radioactivity; α-particle
positively charged nucleus
- Chinese:
- Mandarin: α粒子 (ā'ěrfā lìzǐ), 阿爾發粒子／阿尔发粒子 (ā'ěrfā lìzǐ), 阿伐粒子 (āfá lìzǐ)
- Czech: částice alfa f
- Danish: alfapartikel c
- Finnish: alfahiukkanen (fi)
- French: particule α (fr) f, particule alpha (fr) f
- German: Alpha-Teilchen n, α-Teilchen n, Alphateilchen (de) n
- Icelandic: alfaögn f, alfa-ögn f, alfaeind f
- Indonesian: partikel alfa, zarah alfa
- Irish: alfa-cháithnín m
- Italian: elione m, particella alfa (it) f
- Japanese: アルファ粒子 (arufa-ryūshi), α粒子 (α-ryūshi)
- Korean: 알파 입자 (alpa ipja), α입자 (α-ipja)
- Malay: zarah alfa, partikel alfa
- Polish: cząstka alfa f
- Portuguese: partícula alfa f
- Romanian: particulă alfa (ro) f
- Russian: а́льфа-части́ца (ru) f (álʹfa-častíca), α-части́ца f (α-častíca)
- Spanish: partícula alfa f
- Tagalog: tipik-alpa
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