> You are ignoring that the plasma would ignite the O2 in the air.
replyWhat does this even mean?
> You are also ignoring what happens when several hundred MW of energy (at about 1,000,000C) under pressure is released instantly.
If you have a gram of hydrogen at a million degrees, it can continue putting out several hundred MW for about a fiftieth of a second.
Even if it somehow gets outside the machine with no heat loss to the structure, by the time it mixes with a few cubic meters of air it'll be down to 1000C or less.