(November 21, 2010 at 6:43 am)Welsh cake Wrote: Great article though I would have liked it to brush upon Baryon asymmetry in more detail, antimatter itself is no mystery to us, but the absence of it (at least they mentioned that) in the universe lacking an explanation is a major unresolved problem in physics.
(November 18, 2010 at 9:43 am)The Skeptic Wrote: Anyway, the article says that they are only trapped for a tenth of a second. Do the antihydrogen atoms escape the magnetic field and annihilate with the hydrogen or do they decay into smaller particles?Trying to preserve any amount of concentrated antimatter in electromagnetic traps for any length of time is incredibly difficult, when making antiprotons, they're negatively charged and so they repel away from each other into the container (matter) and annihilate upon contact.
I thought they made hydrogen atoms which meant a antiproton plus a positron, so the whole the is electrically neutral.
