I have posted before about themolysis (using high heat to break down water into hho).
If i was to take a regular plasma cutting torch, and a quartz tube with steam flowing through it... According to known science I would be able to put the quartz tube close enough to the sustained plasma that the steam flowing through it is broke down to HHO by thermolysis.
Question 1: Would the quartz hold up? It might get some cooling from new steam flowing in.
Question 2: Would that newly broke down HHO be auto ignited by electric arcs or by the extreme heat? Is it possible to do without igniting??