This is an educational animation for the gneral population. I don’t think a lot of quantitative information would be helpful.
It is true that the “back” or electron beam is too big in the animation. In reality almost all the energy of the beam is absorbed in the plasmoid, although the electron current is of course the same as the ion current.
We do not rely on theoretical cross sections for the reactions, which probably would not be too accurate. These are experimentally measured cross sections from accelerator experiments.
