alpha particle

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Definitions from WordNet

Noun alpha particle has 1 sense

alpha particle - a positively charged particle that is the nucleus of the helium atom; emitted from natural or radioactive isotopes
--₁ is a kind of particle

Definitions from the Web

Alpha Particle

Description:

An alpha particle is a positively charged particle consisting of two protons and two neutrons, which is emitted by certain radioactive materials during decay.

Sample Sentences:

The alpha particle emitted by the radioactive substance can be harmful to health if not properly shielded.
Scientists study the behavior of alpha particles to better understand radioactive decay.
Alpha particles are commonly used in smoke detectors as they can easily ionize the air inside the device.

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