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。

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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。

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As radon progeny decay, they emit radioactive alpha particles and attach to aerosols, dust and other particles in the air.

氡子核在衰变时发射出放射性阿尔法粒子，这些粒子可附着于空气中的浮质、灰尘及其它粒子。

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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