what happens to a body of water when coming in contact with plasma - such as the plasma cutters? I've been thinking if you had a cylinder filled with some water and something like a plasma "spark plug" you could get some serious vapor pressure. Is this an accurate estimation, or am I way off? If it is accurate, then is it possible to use water as a combustion material - like a modern steam engine? I seem to recall at extremely high pressures, water acts like a lubricant.