That makes a lot more sense, thanks. But if the metallic lattice is retaining the pressure of bringing hydrogen nuclei that close together, wouldn't the whole

That makes a lot more sense, thanks. But if the metallic lattice is retaining the pressure of bringing hydrogen nuclei that close together, wouldn't the whole thing tear itself apart? Is that the instability they're talking about when they say "But at high concentrations the team was unable to create stable samples." ?