Abstract: The Deuterium Reactor is a fusion reactor whose design is based upon a non-singular electrostatic required by the quantization of electric charge. This potential allows for a significant reduction in the fusion barrier of deuterium nuclei when these nuclei are held in close proximity, as within a crystal, and preconditioned using a magnetic field. This manner of fusion barrier reduction produces direct fusion of two deuterium nuclei into a helium nucleus without attendant hazardous radiation of classical fusion reactors. The energy released in the deuterium reactor may be used in different ways for different applications and its use will result in a significant reduction in fossil fuel use, a significant reduction in radioactive waste by replacing fission reactors, and a significant impact upon the world economy.