Sunday, December 26, 2010

Scientists create antihydrogen atoms in the flight condition

CERN and Japan, RIKEN researchers to design an innovative particle trap device, the successful production of a certain number of flight, the anti-hydrogen atoms, which measures the anti-hydrogen atoms start over from ground state subtle transition. On this basis, their next step is expected to produce anti-hydrogen atomic beam, in order to better study the anti-matter, and thus CPT (charge, parity, time) symmetry and to test the basic theory of gravitation, for people to unlock the antimatter universe Mystery provide a powerful tool.
 
Named ASACUSA in this project, the researchers designed "Kasi Bo" trap (cusp trap) can take advantage of the combined effects of multiple magnetic fields, the collection of anti-protons and positrons together to form antihydrogen atoms. Then be imported into these anti-hydrogen atoms in the tube-like channels, showing flight, researchers can study it. Published in "Physical Review Letters," the study noted that more than 7% of the success of the anti-proton trap shooting Rukasibo formation of antihydrogen atoms. It is necessary to produce anti-hydrogen atomic beam preparation process. The ultimate goal of the experiment is to use this method of mass production of flight, the anti-hydrogen atoms, and their behavior with a more detailed microwave study.
Physics of antimatter is one of the most confusing. Why is the universe today, and not by the material composition is antimatter? The current on the best theory of the subatomic world - the standard model of particle physics can not answer. But scientists believe that properties of matter and antimatter may be small differences between the answers lie, and this difference is reflected in the violation of CPT symmetry theorems. CPT symmetry is to replace the particles with the anti-particle, the right hand into left-handed coordinate system, and the particle velocity reversal of all the laws of physics remain unchanged.

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