Interesting read, although I’ve just skimmed it. Not that I’m qualified by any means.
They also compare their materials (2H-GaN, 4H-SiC, 6H-SiC) to diamond (page 18).
The 16 kV stated in the introduction is in the ballpark required for Focus Fusion (about 40 kV), but the current needs to be increased about a thousandfold (1.4 kA compared to about 1 MA for Focus Fusion).
And I’m not sure, if a minimum resistance of 1 Ohms isn’t too high for a 1 MA current.
Closing speed is great though: 0.1 ns to 1.0 ns.