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The Antimatter Mystery Continues

Posted November 19th, 2010 by billyhurley
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Matter and antimatter are almost identical, but their one crucial difference, an opposite charge, can cause mutual annihilation when the two are mixed.

So if there’s plenty of matter here in the world, where is its counterpart? When the universe formed, matter and antimatter should have been produced in equal amounts.

To study antimatter, scientists at the CERN laboratory (located just outside of Geneva) have produced antihydrogen atoms in a vacuum. The researchers used strong, magnetic fields to trap the antihydrogen and prevent it from coming into contact with matter. The experiment has shown that it is possible to isolate antihydrogen atoms for about a tenth of a second, a long enough time to study them.

A New York Times article this week, too, highlighted the Alpha Magnetic Spectrometer, a project led by MIT professor and Nobel laureate Samuel Chao Chung Ting. Come February, the device will sit on the space station and look for cosmic rays, detecting high-energy particles and sorting them by their electrical charges.

Researchers are clearly working hard to solve the antimatter mystery. In fact, Yasunori Yamazaki of Japan’s RIKEN research centre announced, “antimatter will not be able to hide its properties from us much longer.”

You hear that, antimatter? You may annihilate ordinary matter in a flash of energy upon contact, but we’re coming for you.

  • http://novan.com Don Hamilton

    THE MYSTERY IS SOLVED! antimatter just has an extremely short life. In a split second antimatter quickly decays into just plain energy. That’s where all the universe’s energy comes from.

  • Sam

    If antimatter and matter come into contact in equal parts why would there be a “flash of energy”? Would they not merge into nothingness?

  • Michael

    Don:
    Never seen anything that supports that conclusion. Antimatter is short lived, not because it decays, but because it anhilates upon contact with normal matter. Even the methods used to isolate the anti-hydrogen particle only keep it out of contact from normal matter for a very short time. Theoretically, an anti-particle in a perfect vaccum would be just as long lived as it’s normal matter equivalent. The question is why there appears to be much more normal matter in the universe than antimatter. Wouldn’t it make more sense for there to be equivalent amounts of the two? So either our region of the universe is very different from other areas (though there is evidence against this), something happened to remove the antimatter without anhilating normal matter, or the initial conditions of the universe were such that creation greatly favored normal matter via some process we don’t yet understand.

    Sam:
    Antimatter still has postive mass. Remember that in any reaction, you have to conserve mass-energy, charge, etc. The opposite charges cancel one another in the reaction, but the mass has to be accounted for. It is converted into energy in accordance with everyone’s favorite little equation, e=mc^2.

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