https://www.youtube.com/watch?v=_mvUJpfcoKw

Principles of nuclear fusion in very short, understandable video.

It requires a bit of topology. Maybe there's not fusion, but multiplication of matter. There are many values which change function amplitude and wavelengh(shape) in nuclear fusion.

There's for sure possible to achieve this fusion by different source of energy than swapping of atoms between each other, because heat is intensity of sappiness non mixable material automatically swaps back.