antihydrogen

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antihydrogen

[¦an·tē′hī·drə·jən]
(atomic physics)
The antimatter counterpart of hydrogen, whose atoms each consist of an orbiting positron and a nucleus that is an antiproton, antideuteron, or antitriton.
References in periodicals archive ?
The project previously scored a pioneering breakthrough by trapping 38 atoms of anti-hydrogen for more than 16 minutes - a significant improvement on past efforts.
Prof Charlton said: "Our anti-hydrogen measurement was an historic achievement in anti-matter science.
Prof Charlton said: "Our anti-hydrogen measurements are an historic achievement in anti-matter science.
The aim of the ALPHA experiment at Cern, which brings together scientists from eight countries including the UK, USA, Canada and Japan, is detailed studies of anti-hydrogen atoms - the anti-matter counterpart of the simplest atom, hydrogen.
In an astonishing breakthrough this summer, the four, along with a team of international physicists at the nuclear research laboratory Cern in Geneva, were able to trap 38 atoms of anti-hydrogen for over 16 minutes.
That is a significant improvement on past efforts to create anti-matter, which have managed to generate some anti-hydrogen atoms, but they blinked out of existence almost as soon as they were created.
In reality, an international Cern team has succeeded in producing atoms of anti-hydrogen and - more importantly - keeping it long enough to be studied.
You would need 10,000,000,000,000,000,000 times that amount to have enough anti-hydrogen gas to fill a toy balloon.
Mike Charlton, a physics professor at University of Wales, Swansea, has been mentioned in dispatches by the Engineering and Physical Research Council for helping to create anti-hydrogen atoms so they can be studied.
The task the Welsh researchers are now involved in is helping to examine the tiny amount of anti-hydrogen produced and to compare it with normal hydrogen.
The research team at Swansea's department of physics is deploying a pounds 3.2m Antimatter Decelerator to produce the simplest anti-atom, anti-hydrogen, to help scientists around the world probe the differences between matter and anti-matter and shed light on how the universe started life.