What is Hydrogen bomb?
Hydrogen bomb uses fusion instead of fission to generate the main explosion. In a fusion reaction, two atoms of the lightest element, hydrogen, fuse to create one atom of helium, the next-lightest element and release much more energy Since a nuclear explosion is one of the few proven methods for creating temperatures high enough for hydrogen nuclei to overcome their natural repulsion and fuse about 50 million degrees the detonation of regular plutonium- or uranium-based fission bombs is essential to ignite the process. Hence, a hydrogen bomb is really a composite weapon.