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Antimatter internal combustion engine

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I have an idea for an extremely crackpot engine design for a future society I may incorporate into my story.

What would happen is individual antihydrogen molecules injected into the center of carbon fullerene molecules using the combined electron clouds of the atoms to repel the antimatter into the center of the fullerene spheres so they don't touch anything. This keeps the antimatter from annihilating anything until needed for use.

Now to ignite the engine an electric spark is used to ignite the fullerene, releasing the antimatter creating annihilation. The annihilation would create an explosion that drives a piston turning a crankshaft.

Assuming a plentiful antimatter supply and the manufacturing to make a chamber capable of absorbing the impact and produce this sort of fuel in large numbers is this at all feasible?

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This post was sourced from https://worldbuilding.stackexchange.com/q/141572. It is licensed under CC BY-SA 4.0.

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