Alpha particle指的是氦原子核，是一种粒子，属于原子物理学中的一种基本粒子。在英文范文中的应用场景可能包括物理学、化学、生物学等领域的文章。
以下是一篇可能的英文范文，其中包含了alpha particle的相关内容：
标题：The Physics of Alpha Particles
正文：
Alpha particles are a type of elementary particle, composed of two protons and two neutrons in a helium nucleus. They are produced in the decay of radioactive elements and are commonly used in radiation detection and medical imaging. Alpha particles are highly penetrating and can travel long distances through materials, making them useful for studying the internal structure of materials and objects.
In this article, we will explore the physics of alpha particles and how they are used in various fields. We will also discuss the potential risks associated with exposure to alpha radiation and how to mitigate these risks.
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总结：Alpha particles are a type of elementary particle with many applications in various fields, including physics, chemistry, and medicine. Understanding their properties and uses is essential for advancing our understanding of the universe and developing safer radiation detection methods.
Alpha particle是氦核粒子的意思，可由α衰变产生^[1][2]^。
在物理学中，α粒子是一种由两个中子和两个质子组成的粒子，它带正电荷，自旋和动能都极小。虽然α粒子的质量相对较大，但它的穿透能力几乎是零，在空气中只能存在几厘米。然而一旦它与原子核接触，就会发生电离。自然界中有两种类型的α粒子：惰性气体He的离子化版本和具有不同电荷-质量比的H原子核（如质子或中子）的版本。在生物学中，α粒子源是一种放射性物质，可以产生高速运动的氦原子核，可以破坏生物分子的化学键，破坏DNA等生物大分子，改变细胞活性，导致生物体发生基因突变，从而产生毒害作用^[2]^。
Alpha particle的意思是氦原子核，在英文范文中的最新变化应该就是根据不同的语境去变化。