Alpha Particle - Search View

Search View

Alpha Particle

To find a specific word, name, or topic in this article, select the option in your Web browser for finding within the page. In Internet Explorer, this option is under the Edit menu.

The search seeks the exact word or phrase that you type, so if you don’t find your choice, try searching for a key word in your topic or recheck the spelling of a word or name.

Alpha Particle

Alpha Particle, positively charged nuclear particle, symbol a, consisting of two protons bound to two neutrons. Alpha particles are emitted spontaneously in some types of radioactive decay (see Radioactivity). They are also produced when helium-4 atoms are completely ionized (see Ion; see Ionization). Alpha particles are also notated ¸He«⁺.