A working steam engines gives off X-rays and produces He gas, as it does Molecular Nuclear Fusion.
So this was published science in the 20th century. But there were too many paid research progams, failing to do nuclear fusion.
100 billion a year for the Great Hadron Collider not to do it. They need tol insert spin fields, fo the hydrogen ions circulate in a turbulent (TU) fashion.
The most useful sort is plasma Molecular Nuclear Fusion.
A lightening strike is a 2cmx1.5km steam plasma, that starts at 8 atmospheres, and breaks down at 3.5.
This teaches us a 50x1cm steam plasma will self sustain at 4 atmospheres, turning 2x10-12cc of regular water, into 1.2MW of heat for a year.
A thermoelectric generator will turn this into 144kW of carbon 0 electricity. So fre carbon 0 power, from regular water.