(1953) Truman announces the H-bombIn his final State of the Union address, President Harry Truman reveals that the US has created the hydrogen bomb, a thermonuclear weapon vastly more powerful than the atomic bombs dropped on Japan.A thermonuclear weapon is a second-generation nuclear weapon design using a secondary nuclear fusion stage consisting of implosion tamper, fusion fuel, and spark plug which is bombarded by the energy released by the detonation of a primary fission bomb within, compressing the fuel material and causing a fusion reaction. Some advanced designs use fast neutrons produced by this second stage to ignite a third fast fission or fusion stage. The fission bomb and fusion fuel are placed near each other in a special radiation-reflecting container called a radiation case that is designed to contain x-rays for as long as possible. The result is greatly increased explosive power when compared to single-stage fission weapons. The device is colloquially referred to as a hydrogen bomb or, an H-bomb, because it employs the fusion of isotopes of hydrogen.
Inventor: Edward Teller
Castle Romeo nuclear test (yield 11 Mt) on Bikini Atoll. It was the first nuclear test conducted on a barge. The barge was located in the Castle Bravo crater. wiki/Thermonuclear_weapon4.8.d17