The development of hydrogen bombs began at the end of World War II. Since the atomic bomb exploded, because it can produce tens of millions of degrees of ultra-high temperature, it has also created conditions for the future development of hydrogen bombs. In the early days of developing hydrogen bombs, the United States failed after many experiments.

After 1950, the United States resumed experiments and made a lot of calculations on the conditions of thermonuclear reaction with computers, which proved that it is indeed possible for the deuterium-tritium mixture as thermonuclear material to start fusion reaction at the high temperature generated by the explosion of polonium bombs. In order to check these conclusions, they prepared a small amount of deuterium and tritium for experiments in a polonium bomb and measured the number of neutrons produced by the explosion of the polonium bomb.

After this test, the United States stepped up the work of making hydrogen bombs, and finally conducted the first hydrogen bomb test in the Pacific Ocean on June 1 952+065438+1October1day. The hydrogen bomb used at that time weighed 65 tons, which was very huge and had no practical value. It was not until June 1954 that solid lithium deuteride was found to replace liquid.