A radioactive transuranic metallic element produced by bombarding with helium nuclei.

一种放射性超铀元素在用氦核子轰击时发现。

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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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Alpha particles are positively charged helium nuclei obtained from natural radioactive decay.

粒子是从天然放射性蜕变得到的带正电的氦核。

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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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Helium nuclei have an electric charge, so they stay in the tight hug of the magnetic fields.

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But the whole thing then breaks up into three helium nuclei, releasing a lot of energy at the same time.

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Helium nuclei are positively charged and thus easier to rein in using an electric field, in order to strip them of their energy.

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