Lúsèfú yòng ā'ěrfǎ lìzǐ zuò le zhùmíng de sǎnshè shíyàn.
Rutherford used alpha particles in his famous scattering experiment.
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阿尔法 (ā'ěrfǎ) is just 'alpha' transliterated. Pair it with 粒子 (lìzǐ, 'particle') and you get the same compound shape used for 贝塔粒子 (beta particle) and 伽马射线 (gamma ray).