Getting it to work in a controllable continuous way and producing more power output than the power input.
The nuclear fusion uses Hydrogen to produce Helium. The fusion also releases a lot of energy, which is what causes the explosion.
Nuclear fusion.
nuclear fusion
Both fission and fusion can be used to make nuclear bombs, in fact almost every nuclear bomb in stockpile in the world today uses both fission and fusion to achieve its total yield, optimize it material efficiency, and reduce size and weight.
I found the website K1 Project very helpful. They had several articles underneath their Learn/Energy tab which should answer any questions about nuclear fusion.
Fusion...
nuclear fusion
Nuclear Fusion
Combining two atomic nuclei is called nuclear fusion.
Fusion is a nuclear reaction.
The idea of nuclear fusion occurring at room temperature is called cold fusion.
Nuclear fusion produces nuclear energy
That would be nuclear fusion, like what happens in stars, when two hydrogen nuclei combine to form a helium nucleus.
Nuclear fusion
Nuclear fusion doesn't produce energy.
nuclear fusion
nuclear fusion make more energy and they both make energy and have waste products