alpha ray


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Related to alpha ray: beta ray

alpha ray

ionizing radiation consisting of a stream of alpha particles

alpha ray

[′al·fə ‚rā]
(nucleonics)
A stream of alpha particles.
References in periodicals archive ?
While bombarding light atoms with alpha rays, he observed outgoing protons whose energy was larger than that of the incoming alpha particles.
The main reason for this misconception is that I emit alpha rays. These alpha rays can be stopped with a piece of paper.
He called the massive, positively charged radiation alpha rays, and the lighter, negatively charged radiation beta rays, after the first two letters of the Greek alphabet.
Consider as an example the discovery of radioactive decay and the existence of, say, alpha particles (or alpha rays) and contemplate the following experimental contexts: