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Reactions in which proton–antiproton annihilation produces as many as 9 mesons have been observed, while production of 13 mesons is theoretically possible. The generated mesons leave the site of the annihilation at moderate fractions of the speed of light and decay with whatever lifetime is appropriate for their type of meson. [4]
The reaction of 1 kg of antimatter with 1 kg of matter would produce 1.8 × 10 17 J (180 petajoules) of energy (by the mass–energy equivalence formula, E=mc 2), or the rough equivalent of 43 megatons of TNT – slightly less than the yield of the 27,000 kg Tsar Bomba, the largest thermonuclear weapon ever detonated.
An antimatter weapon is a theoretically possible device using antimatter as a power source, a propellant, or an explosive for a weapon.Antimatter weapons are currently too costly and unreliable to be viable in warfare, as producing antimatter is enormously expensive (estimated at US$6 billion for every 100 nanograms), the quantities of antimatter generated are very small, and current ...
"On Earth, most antimatter that occurs naturally is produced from cosmic rays - energetic particles from space - that collide with atoms in the air and create antimatter-matter pairs," said ...
The antihydrogen atoms were produced in flight and moved at nearly the speed of light. [2] They made unique electrical signals in detectors that destroyed them almost immediately after they formed by matter–antimatter annihilation. [3] Eleven signals were observed, of which two were attributed to other processes. [1]
When an antimatter and a matter particle meet, they annihilate in a flash of energy. ... All the particles that make up the matter around us, such electrons and protons, have antimatter versions ...
An actual matter-antimatter annihilation due to an atom of antihydrogen in the ATHENA experiment. The antiproton produces four charged pions (yellow) whose positions are given by silicon microstrips (pink) before depositing energy in CsI crystals (yellow cubes). The positron also annihilates to produce back-to-back gamma rays (red).
A magnetic coil captures the exhaust products of this reaction, expelling them with an exhaust velocity of 12-20% the speed of light (35,000-60,000 km/s). As the spacecraft approaches 20% the speed of light, more antimatter is fed into the engines until it switches over to pure matter-antimatter annihilation. [2]