Like Atoms, Anti-Atoms consist of three main Particles. Anti-Protons, Anti-Neutrons and Positrons. Figure 1 shows the simple structure of the anti-hydrogen atom.
The Positrons circle the nucleus, which consists of the antiprotons and antineutrons. The antiprotons and antineutrons form the densest part of the atom. Positrons are of negligeble weight. Inside antiprotons and antineutrons you have Anti-Quarks.
All the Anti-atoms are the
excact opposite of that of Matter. For Example the Nucleus in Matter is positive
while the Anti-Nucleus is Negative. The Magnetic Moment of the particles of
Antimatter is also the opposite.
Figure 1 This figure shows a simple Atom of Anti-Hydrogen. The red dot is the Anti-Nucleus consisting of the anti-protons and anti-neutrons. The blue dot is the positroncircling the nucleus.
Antimatter is often observed
in particle accelerators. They can also be 'stored'
Particle Accelerators are devices used to accelerate charged elementary particles or ions to high energies. Particle accelerators are the largest and most expensive instruments used by physicists. They have a source of elementary particles or ions, a tube pumped to a high vacuum in which the particles can travel freely, and some means of speeding up the particles.
Anti Particles can be 'stored'
in a donut shaped ring inside which there is a complete vaccum. This donut shaped
ring is magnetic, and thus the particle revolves around the center of the ring
without touching the sides. This is how AntiParticles are prevented from coming
in contact with particles of matter and annihilating