oxygen-18

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oxygen-18

[′äk·sə·jən ā′tēn]
(nuclear physics)
Oxygen isotope with atomic weight 18; found 8 parts to 10,000 of oxygen-16 in water, air, and rocks; used in tracer experiments. Also known as heavy oxygen.
References in periodicals archive ?
In this case, the researchers detected elevated levels of the isotope oxygen 18 in comparison with the more commonly found oxygen 16.
This analyzer will allow simultaneous measurement reports related to water isotopes: Hydrogen (H) and deuterium (D), on the one hand, and Oxygen 16 and Oxygen 18, on the other hand, the water vapor atmospheric.
One of the more unusual, and unexplained, features of a hurricane is that its rain is isotopically lighter than normal, with a lower concentration of oxygen 18 than typical rainwater has.