This week, science fiction has decided to become a reality. After transplantation of a human head, here as researchers from the University of Michigan were able to create a cannon capable of firing positrons (anti-electrons) as his great, great brother, the particle accelerator at CERN, except that their gun fits on a laboratory bench.
few years ago, scientists were already able to create positrons by firing a laser on gold. This time, as explained in an article published in Physical Review Letters, the laser shoots a gas, helium, which has the effect of ejecting electrons out of the inert gas at a very high speed. The particles are then directed onto a sheet of metal. They then collide with individual atoms. These high-energy collisions create a plume of electrons and positions that are separated by magnets so they are easier to study.
The main difference between this gun positrons using helium rather than gold: positrons products resemble antimatter particle jets produced by black holes and pulsars. This technique should help us better understand what is really happening.
Now imagine if a villain could get his hands on that gun! Then it could disintegrate anyone! Do not panic, it does not produce enough antimatter to destroy an entire country.
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