This works on the basis of distributing the deuterium all over the target area to maximise the damage, all you have to do is spark the bit at the top once; then the outside layer of Liquid O2 will ignite, cracking the deuterium case, spreading it across the target area. Simultaneously, the plutonium/ boyle gas core will create neutrons, which after a couple of seconds, will burst out and detonate the deuterium. I saw something a bit like this once, but I thought i'd try and make a completely destructible one. Hope you like this, its only my second creation. :)

I didn't see those ones, but they're pretty good. The one I saw used E-Wall, so I tried to make one without using anything indestructible.