Physicists Create Heaviest Form of Antimatter Ever Seen

Smashing TimeStephen Battersby writes on New Scientist:

A newly created form of antimatter is the heaviest and most complex anti-thing ever seen. Anti-helium nuclei, each containing two anti-protons and two anti-neutrons, have been created and detected at the Relativistic Heavy Ion Collider (RHIC) in Upton, New York.

Anti-particles have the opposite electrical charge to ordinary matter particles (anti-neutrons, which are electrically neutral, are made up of antiquarks that have the opposite charge to their normal quark counterparts). They annihilate on contact with matter, making them notoriously tricky to find and work with. Until recently, the most complex unit of antimatter ever seen was the counterpart of the helium-3 nucleus, which contains two protons and one neutron.

But experiments at RHIC are changing that. RHIC collides heavy atomic nuclei such as lead and gold to form microscopic fireballs, where energy is so densely packed that many new particles can be created.

Read More: New Scientist

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  • OppositeCharge

    I guess Upton, New York is the place to go for a supply of anti matter. For an abundant supply of anti humans you’ll have to travel to New York City. Ground Zero is at the intersection of 5th Avenue & 34th Street at the top of the Empire State Building, where you can look down and observe them by the thousands at a safe distance. Be sure to take a cab to and from JFK Airport directly to the entrance making sure you DO NOT TOUCH ANYONE on the way up or down and en route.

    In addition, enjoy “The Big Apple” as much as you can, but DON’T TAKE A BITE!!!

  • OppositeCharge

    I guess Upton, New York is the place to go for a supply of anti matter. For an abundant supply of anti humans you’ll have to travel to New York City. Ground Zero is at the intersection of 5th Avenue & 34th Street at the top of the Empire State Building, where you can look down and observe them by the thousands at a safe distance. Be sure to take a cab to and from JFK Airport directly to the entrance making sure you DO NOT TOUCH ANYONE on the way up or down and en route.

    In addition, enjoy “The Big Apple” as much as you can, but DON’T TAKE A BITE!!!

    • Bud Bundy

      Is that a 9/11 joke?

      QUEUE INDIGNANT OUTRAGE

      • OppositeCharge

        NO! I intended no reference or irreverence toward the 9/11 tragedy, nor was it targeted at NYC and New Yorkers in general, a city that I grew up near and know well, and hold dear. This was perhaps a lame jibe toward the toxicity of the global human population explosion in general, and maybe a wink and nod toward Malthus.

        My humble apologies for those who took offense.

  • Bud Bundy

    Is that a 9/11 joke?

    QUEUE INDIGNANT OUTRAGE

  • OppositeCharge

    NO! I intended no reference or irreverence toward the 9/11 tragedy, nor was it targeted at NYC and New Yorkers in general, a city that I grew up near and know well, and hold dear. This was perhaps a lame jibe toward the toxicity of the global human population explosion in general, and maybe a wink and nod toward Malthus.

    My humble apologies for those who took offense.

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