delta ray

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delta ray

n.
An electron ejected from matter by ionizing radiation.

delta ray

n
(General Physics) a particle, esp an electron, ejected from matter by ionizing radiation

del′ta ray`


n.
a low-energy electron emitted by a substance after bombardment by higher-energy particles, as alpha particles.
[1905–10]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.delta ray - an electron ejected from matter by ionizing radiation
electron, negatron - an elementary particle with negative charge
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Some of those electrons are hit hard enough to go off laterally (making tracks called delta rays) and penetrate cells not hit by the primary ion beam, where they may do some damage.