1. Powdered nickel is loaded with hydrogen and heated its Debye temperature – which is the temperature which maximizes the vibration of the individual molecules in the nickel lattice.
2. The hydrogen molecules (H2) are dissociated into a plasma by a spark from a spark plug. In the plasma the H atoms (consisting of a proton and an electron) are excited into elliptical orbits. Due to the elliptical orbit, the electron comes very close to the proton at one end, and so is screened to appear like a neutron (no charge).
3. Driven by the lattice vibration and the pulse of plasma from the spark, the screened H atom is driven into the nucleus of a Ni atom, producing Copper, Zinc, and other transmuted byproducts, and copious heat.
That’s their theory.