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Neutron Jammers or N-Jammers are a fictional technology used in the television anime series Mobile Suit Gundam Seed.
The N-Jammer is a device which suppresses nuclear fission reactions by blocking the movement of free neutrons (it is probable that nuclear fusion, which does not rely on neutron emission, would be unaffected by an N-Jammer). Its effective range is so great that even a handful of these devices are sufficient to cover the entire Earth, nullifying all nuclear weapons and power plants on the planet's surface. The N-Jammer also has the side effect of disrupting radio waves, severely restricting the range of radar and conventional communications, and for this reason space warships are equipped with these devices as an electronic countermeasure.
The N-Jammer was originally developed in the PLANTs under the supervision of Supreme Council member Orson White. These devices were first employed in the battle for the space station Yggdrasil on February 22, C.E. 70, and on April 1 of that year the ZAFT forces drove countless N-Jammers into Earth's surface as the first phase of their Operation Uroboros campaign. The nations of Earth, which had previously depended on nuclear fission as their primary power source, were plunged into a severe energy crisis as a result.
During the winter of CE 70-71, at least tens of millions of Naturals died on Earth because of lack of energy for heating, due directly to the presence of N-Jammers on Earth. However, the Treaty of Junius outlawed the use of N-Jammers in combat, either in a defensive role or as a weapon.
See also: N-Jammer Canceller
(This article includes information taken from gundamofficial.com)
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