What does antihelium mean?
Antihelium means (particle physics) The antiatom form of helium.
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Pronunciation varies by accent · noun
(particle physics) The antiatom form of helium.
In 1970, a more complex antinucleus, antihelium-3 (iHe), was discovered in the USSR.
In principle the energy should have been enough for the production of even heavier antinuclei. However, the probability for production of heavier masses is very tiny, and antihelium-3 is still the heaviest known antielement.
After several launches of their balloon, the scientists registered more than 40 million nuclei of helium in the cosmic rays, but not a single nucleon of antihelium.
Use antihelium when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Antihelium means (particle physics) The antiatom form of helium.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
In 1970, a more complex antinucleus, antihelium-3 (iHe), was discovered in the USSR.
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