Antihydrogen atoms are produced in a vacuum at CERN, but are nevertheless surrounded by normal matter. Because matter and antimatter annihilate when they meet, the antihydrogen atoms have a very short life expectancy. This can be extended, however, by using strong and complex magnetic fields to trap them and thus prevent them from coming into contact with matter. The ALPHA experiment has shown that it is possible to hold on to atoms of antihydrogen in this way for about a tenth of a second: easily long enough to study them. Of the many thousands of antiatoms the experiment has created, ALPHA’s latest paper reports that 38 have been trapped for long enough to study.
At this point, there is a problem: the antihydrogen is chargeless and can no longer be contained in the magnetic Penning trap. The researchers constructed what they called an ALPHA apparatus, which features a novel superconducting magnetic trap that interacts with the antihydrogen's magnetic moment. The magnetic moment of an individual atom comes from the structure or interaction of the orbiting particle (the positron) and the nucleus (the antiproton) and allows the particle to interact with electric fields in a weak manner. The ALPHA trap can confine antihydrogen in the ground state if it's kept at temperatures of less than half a Kelvin.
"The light is green, the trap is clean, the antihydrogen is incarcerated here in our custom made storage facility."
Anti-matter is like matter, only the opposite. Also, if they touch each other there's a ginormous explosion.
Hairy Lobster wrote: "bacon"
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