1st let me understand antimatter explosions... If you have an equal amount of anti-matter and matter, when they meet, do they blow up, and what kind of yield are we talking... or do they cancel each other out and give out a whimper? How do you get an antimatter explosion and a release of tons of energy?
How much antimatter would one need to make a bigger explosion than the worlds most powerful Hydrogen Bomb, and what is the most antimatter one of our current-tech particle accelerators can hold?