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Related to alpha ray: beta ray
1. A rapidly moving alpha particle.
2. A narrow beam of such particles.
(General Physics) ionizing radiation consisting of a stream of alpha particles
a stream of alpha particles. Also called al′pha radia`tion.
A stream of alpha particles.
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|Noun||1.||alpha ray - the radiation of alpha particles during radioactive decay|
ionizing radiation - high-energy radiation capable of producing ionization in substances through which it passes