Faculty of Physics, Hanoi University of Science


Physicists create tabletop antimatter 'gun'

Email In PDF.
Xem kết quả: / 0
Bình thườngTuyệt vời 

(Phys.org) —An international team of physicists working at the University of Michigan has succeeded in building a tabletop antimatter "gun" capable of spewing short bursts of positrons. In their paper published in the journal Physical Review Letters, the team describes how they created the gun, what it's capable of doing, and to what use it may be put.

Positrons are anti-particles, the opposite twin of electrons. Besides being created in physics labs, they are also found in jets emitted by black holes and pulsars. To date, the creation of positrons for study has involved very big and expensive machines. One of those is the at CERN. Another is a device built by scientists at Lawrence Livermore National Laboratory that created positrons by firing a hugely powerful laser at a tiny disc made of gold. Other recent work by researchers at the University of Texas has involved building a desktop sized accelerator. This new effort builds on that work—this team has built a device not more than a meter long that is capable of generating short bursts of both electrons and positrons, very similar they report, to what is emitted by black holes and pulsars.

Read more at: http://phys.org/news/2013-06-physicists-tabletop-antimatter-gun.html

The PRL paperhttp://prl.aps.org/abstract/PRL/v110/i25/e255002