heavy hydrogen


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Related to heavy hydrogen: tritium

heavy hydrogen

[′hev·ē ′hī·drə·jən]
(nuclear physics)
Hydrogen consisting of isotopes whose mass number is greater than one, namely deuterium or tritium.
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References in periodicals archive ?
Most difficult of all the obstacles still to be overcome in developing thermonuclear technology is attainment of the extraordinarily high temperatures and pressures necessary to break the nucleus of hydrogen--100 million degrees Celsius for heavy hydrogen (deuterium-tritium) reactions.
On the Threshold of a New Atomic Age
Hydrogen-2 came to be called heavy hydrogen or deuterium (from the Greek word for "two").
Deuterium
His investigation of the atomic weights of oxygen and hydrogen led ultimately to discovery of deuterium, commonly known as heavy hydrogen, a key component in atomic research.
1914: Business and industry; science; education; philosophy and religion
Scientists are confident that all of the universe's lithium, and most of its helium and deuterium (heavy hydrogen), formed just minutes after the Big Bang, when the expanding cosmos cooled enough for protons and neutrons to bind into lightweight atomic nuclei.
Lab tests mystery of lithium levels: experiment supports theory of Big Bang element production
The polar craters of the Moon are possible water sources while the high ratio of heavy hydrogen to deuterium in Mars and Venus affirms the former presence of water
Water, water everywhere (and perhaps a few drops to drink
Heavy hydrogen atoms, now known as deuterium, are discovered by Harold Urey and George M.
1930s
In late 1978 a Pioneer Venus atmospheric probe found a huge excess of deuterium (heavy hydrogen) relative to normal hydrogen.
Early Venus: the wet look
1931 of deuterium, or heavy hydrogen, an isotope of hydrogen.
1934: Business and industry; science; education; philosophy and religion

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