History<br />The modern theory of antimatter begins in 1928, with a paper by Paul Dirac.<br /> Dirac realized his version of the Schrödinger wave equation for electrons was predicting the possibility of antielectrons. <br />These antielectrons were discovered by Carl D. Anderson in 1932 and named positrons.<br />
Annihilation <br /><ul><li>Annihilation is the process that occurs when a subatomic particle collides with its respective antiparticle.
Ex . Positron + electron = energy </li></li></ul><li>A Feynman diagram of a positron and an electron annihilating into a photon (gamma rays).<br />
Big bang <br />During big bang matter and antimatter was created in equal proportion.<br />But due to unknown reasons matter overtook antimatter and what's left is mostly matter!<br />This is called baryon asymmetry.<br />This is one among the greatest unsolved problems in physics.<br />
Storage <br />Antimatter cannot be stored in a container made of ordinary matter because antimatter reacts with any matter it touches, annihilating itself and an equal amount of the container. <br />Antimatter that is composed of charged particles can be contained by a combination of an electric field and a magnetic field in a device known as a Penning trap. <br />
Disadvantages <br />Cost : To produce 1 gram of antimatter, CERN would need to spend 100 quadrillion dollars and run the antimatter factory for 100 billion years.<br />
One researcher of the CERN laboratories, which produces antimatter regularly, said:<br />“ If we could assemble all of the antimatter we've ever made at CERN and annihilate it with matter, we would have enough energy to light a single electric light bulb for a few minutes. “<br />