You could simply isolate the reacting elements to create a more efficient and quick method. I'm pretty sure the combination is PROT, NEUT, high tmp2 and life WARP, and EXOT.
The game has messed up, so the instructions are here (do it in a closed chamber): Charge the vibranium until it starts glowing, and when it is almost exploding, add plutonium. This can take more than one try, and if there is just oxigen, try to ignite it. Feel free to use it :)