[ohiovr]

I think the problem with trying to fuse two nuclei with your fingers is that the recoil from the reaction is really going to hurt. In a diamond this will destroy it. So it would seem like the only way it could work is if it were done as a burst. With a reasonable fraction of a coulomb of charge on each side rushing together and blocked by a thin layer of diamond, for a brief moment a lot of nuclei will be hopping on top of each other. If the ions and electrons are liberated instantly, immediately after there will be a high energy explosion. So shhh.. don't tell anyone like General Groves.