Can someone tell me what the likelihood of a humongous explosion from nuclear fusion could be? All these nuclear physicists dealing with enormous amounts of energy, like the LHC or China with their attempts at nuclear fusion really terrify me that it might provoke a huge reaction that will devastate the planet. Is this possible or do they have a true fail-safe in place that prevents it?
> All these nuclear physicists dealing with enormous amounts of energy, like the LHC
The LHC uses ~86 megawatts, about the same power as a 747's engine at full throttle. It's about the same as a small natural gas powered turbine. GE builds gas turbines that produce 800+ MW.
The LHC is just a controlled environment to study the kind of particle collisions that are happening all over the earth every day. We live next to a giant fusion reaction, and freak particles come in from outer space all the time. We have detected many particles with millions of times more energy than the particles in the LHC- the Oh-My-God particle had 20 million times more energy.
> Can someone tell me what the likelihood of a humongous explosion from nuclear fusion could be?
Fission self-sustains. Each reaction produces 3 neutrons that can start another reaction. It explodes because the neutrons grow like 3, 9, 27 etc.
Fusion does not. You have a number of atoms, and 2 of those atoms have to find each other to fuse. One reaction does not make any other reactions more likely. Unlike fossil fuels or fission reactions, the fuel cannot be lit. It can only burn when carefully confined. You can only build up enough flame to break the containment vessel, at which point it goes out. Since the inside of the vessel is basically a vacuum, it will implode instead of exploding.
There's nothing to 'prevent'. There's not enough energy in the hydrogen in the chamber to cause an explosion. Your high school science teacher could have explained this to you.
