Alpha particles are these helium nuclei, and they are the result of radioactive decay.

阿尔法粒子是氦核，它们是放射性衰变的产物。

youdao

So, what we've got here is a source of alpha particles.

我们已经有了一个阿尔法粒子源。

youdao

As we breathe, radon progeny are deposited on the cells lining the airways where the alpha particles can damage DNA and potentially cause lung cancer.

当我们呼吸时，氡子核可堆积在呼吸道壁层的细胞上，而阿尔法粒子可破坏DNA并有可能引起肺癌。

youdao

So, what he could conclude thus far was that this was really consistent with the Plum Pudding model. All of his heavily-charged alpha particles were going right through this thin layer of gold atoms.

和布丁模型是吻合的,所有的重alpha粒子,都穿过金原子,你们也许会觉得,他可以就此。

麻省理工公开课 - 化学原理课程节选

From that data, its computers were able to positively identify 18 anti-alpha particles created.

FORBES: Scientists Detect Heaviest Known Antimatter Particle

The detector also enabled an analysis of the production rate of the anti-alpha particles, which was consistent with expectations.

FORBES: Scientists Detect Heaviest Known Antimatter Particle

Scientists working on the Alpha project at Cern are trying to find out by isolating and studying particles of anti-hydrogen.

BBC: The problem with anti-matter