Finally went through the GF website, and picked up a couple of mitigating points they left lying around, namely that the “hang time” for the plasmoids in the central vortex is in the range of “hundreds of microseconds”, and the pulse rate for their default 100MW setup is… one Hz.
(Indeed, the whole setup reminds me of Gally’s Hertza Haeon…)
Let’s pile on the penalties and omit the wave going supersonic… sound v in STP lead is ~1.3 km/sec, how much less for liquid lead? And the lithium added to the lead?… and then the vortex…
But even given an WAG penalty of 300-400 m/s the travel time for the wave to cross 1.5 meters to the center of the sphere would still be an order(s) of magnitude shorter than the plasmoid hang time. And thats even when handicapping the wave v big time.
Add a whole second for the vortex to recollect any “mist” and this would seem to make both timing and the mist a non-issue.