The radioactive waste from fission energy has created concerns that have stalled its expansion. While solar energy has emerged for small scale use, its low energy density and the energy storage issue has made its use in central power stations very difficult.
Fusion energy is an alluring alternative.
Fusion fuel can be taken from water, which would not be diminished in the process. These conditions result in fusion ignition, a self-sustained fusion process. Each pulse of energy is equivalent to about 100 pounds of high explosive. Deuterium and tritium, heavy isotopes of hydrogen, are chosen because of the high speed with which they fuse. Their fusion produces a helium nucleus and a very fast neutron which carries most of the energy.