antihydrogen


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Related to antihydrogen: antihelium

an·ti·hy·dro·gen

 (ăn′tē-hī′drə-jən, ăn′tī-)
n.
The antimatter equivalent of hydrogen.

antihydrogen

(ˈæntɪˌhaɪdrədʒən)
n
(Chemistry) hydrogen in which the nucleus is an antiproton with an orbiting positron
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References in periodicals archive ?
Now we can finally begin to coax the truth out of antihydrogen.
It means antimatter, the "rocket fuel" in the warp engines on Star Trek's USS Enterprise, whose mission was "to boldly go where no man has gone before" can for the first time be investigated A Swansea University team - comprising Professor Mike Charlton, Dr Niels Madsen, Dr Dirk Peter van der Werf and Dr Stefan Eriksson - are part of the international collaboration at Cern which trapped the antihydrogen.
We have a magnetic bowl, if you will, kind of a bottle, that holds the neutral antihydrogen atoms and this is the first time that this has been demonstrated," he said.
About 10 years ago, researchers created atoms of antihydrogen by combining antiprotons and positrons, the antimatter equivalents of protons and electrons.
But Dirac also theoretically supposed the existence of antimatter in 1928 which resulted from Dirac's mathematical equation, and finally the antimatter was discovered/produced in large accelerators in 1996 when it was created the first atom of antihydrogen which lasted for 37 nanoseconds only.
ALPHA managed to store twice the antihydrogen (the antimatter partner to normal hydrogen) 5,000 times longer than the previous best, setting the stage, for example, to test whether antihydrogen and normal hydrogen fall the same way due to gravity.
But the 38 atoms of antihydrogen trapped by scientists for one sixth of a second would hardly pose a threat to the Vatican.
The new experiments, which probed antihydrogen atoms, show no sign that physical laws differ between this exotic matter and ordinary matter.
The ALPHA collaboration stored atoms of antihydrogen, consisting of a single negatively charged antiproton orbited by a single positively charged anti-electron (positron).
Prof Charlton was part of the CERN team which was the first to create large quantities of antihydrogen, the simplest antimatter atom, in September 2002.
In the mid-1990s, physicists pieced together the first few atoms of antihydrogen (SN: 1/13/96, p.
Scientists first created antihydrogen nearly 3 years ago by joining positrons with antiprotons, which are as massive as ordinary protons but negatively charged (SN: 11/30/96, p.